INSTRUCTION MANUAL UNDER/OVERVOLTAGE PROTECTION RELAY GRE130

Transcription

1 INSTRUCTION MANUAL UNDER/OVERVOLTAGE PROTECTION RELAY GRE130 TOSHIBA Corporation 2014 All Rights Reserved. ( Ver. 2.0)

2 Safety Precautions Before using this product, please read this chapter carefully. This chapter describes the safety precautions recommended when using the GRE130. Before installing and using the equipment, this chapter must be thoroughly read and understood. Explanation of symbols used Signal words such as DANGER, WARNING, and two kinds of CAUTION, will be followed by important safety information that must be carefully reviewed. DANGER WARNING CAUTION CAUTION Indicates an imminently hazardous situation which will result in death or serious injury if you do not follow the instructions. Indicates a potentially hazardous situation which could result in death or serious injury if you do not follow the instructions. Indicates a potentially hazardous situation which if not avoided, may result in minor injury or moderate injury. Indicates a potentially hazardous situation which if not avoided, may result in property damage. 1

3 DANGER Exposed terminals Do not touch the terminals of this equipment while the power is on, as the high voltage generated is dangerous. Residual voltage Hazardous voltage can be present in the DC circuit immediately after switching off the power supply. It takes approximately 30 seconds for the voltage to discharge. CAUTION Earth The earthing terminal of the equipment must be securely earthed. CAUTION Operating environment The equipment must only be used within the range of ambient temperature, humidity and dust detailed in the specification and in an environment free of abnormal vibration. Ratings Before applying AC voltage or the power supply to the equipment, check that they conform to the equipment ratings. Printed circuit board Do not attach and remove printed circuit boards when the DC power to the equipment is on, as this may cause the equipment to malfunction. External circuit When connecting the output contacts of the equipment to an external circuit, carefully check the supply voltage used in order to prevent the connected circuit from overheating. Connection cable Carefully handle the connection cable without applying excessive force. Power supply If a power supply has not been supplied to the relay for two days or more, then all fault records, event records and disturbance records and the internal clock may be cleared soon after restoring the power. This is because the back-up RAM may have discharged and may contain uncertain data. Modification Do not modify this equipment, as this may cause the equipment to malfunction. Disposal This product does not contain expendable supplies nor parts that can be recycled. When disposing of this equipment, do so in a safe manner according to local regulations as an industrial waste. If any points are unclear, please contact our sales representatives. 2

4 Contents Safety Precautions 1 1. Introduction 6 2. Application Notes Overvoltage and Undervoltage Protection Phase Overvoltage Protection Phase Undervoltage Protection Zero Phase Sequence Overvoltage Protection Negative Phase Sequence Overvoltage Protection Frequency Protection Frequency element Frequency rate-of-change element Trip and Alarm Signal Output Technical Description Hardware Description Outline of Hardware Modules Input and Output Signals AC Input Signals Binary Input Signals Binary Output Signals PLC (Programmable Logic Controller) Function Automatic Supervision Basic Concept of Supervision Relay Monitoring Trip Circuit Supervision Circuit Breaker Monitoring Failure Alarms Trip Blocking Setting Recording Function Fault Recording Event Recording Disturbance Recording Metering Function Control Function User Interface Outline of User Interface Front Panel Communication Ports Operation of the User Interface 50 3

5 4.2.1 LCD and LED Displays Relay Menu Displaying Records Status Display Viewing the Settings Changing the Settings Control Testing Personal Computer Interface Modbus Interface IEC Interface IEC Communication Clock Function Special Mode Installation Receipt of Relays Relay Mounting Flush Mounting Dimensions Electrostatic Discharge Handling Precautions External Connections Optinal case model S1-GRE Commissioning and Maintenance Outline of Commissioning Tests Cautions Safety Precautions Precautions for Testing Preparations Hardware Tests User Interfaces Binary Input Circuits Binary Output Circuits AC Input Circuits Function Test Measuring Element Protection Scheme Metering and Recording Conjunctive Tests On Load Test Tripping Circuit Test Maintenance Regular Testing 128 4

6 6.7.2 Failure Tracing and Repair Replacing Failed Relay Unit Resumption of Service Storage Putting Relay into Service 130 Appendix A 131 Signal List 131 Appendix B 140 Event Record Items 140 Appendix C 146 Binary Output Default Setting List 146 Appendix D 148 Details of Relay Menu and LCD & Button Operation 148 Appendix E 159 Case Outline 159 Appendix F 162 Typical External Connection 162 Appendix G 169 Relay Setting Sheet 169 Appendix H 179 Commissioning Test Sheet (sample) 179 Appendix I 183 Return Repair Form 183 Appendix J 188 Technical Data 188 Appendix K 194 Symbols Used in Scheme Logic 194 Appendix L 197 Modbus: Interoperability 197 Appendix M 222 IEC : Interoperability 222 Appendix P 229 IEC61850: Interoperability 229 Appendix O 268 Ordering 268 The data given in this manual are subject to change without notice. (Ver.2.0) 5

7 1. Introduction GRE130 series relays provide overvoltage and undervoltage protection for distribution substations, generators, motors and transformers. The GRE130 provides the following protection schemes. Overvoltage and undervoltage protection with definite time or inverse time characteristics Instantaneous overvoltage and undervoltage protection The GRE130 series provides the following protection schemes. Zero phase sequence overvoltage protection Negative phase sequence overvoltage protection The GRE130 series provides the following functions. Two settings groups Configurable binary inputs and outputs Circuit breaker control and condition monitoring Control hierarchy change Trip circuit supervision Automatic self-supervision Menu-based HMI system Configurable LED indication Metering and recording functions Front mounted USB port for PC communications Rear mounted RS485 serial port for communication GRE130 provides continuous monitoring of internal circuits and of software. External circuits are also monitored, by trip circuit supervision and CB condition monitoring features. A user-friendly HMI is provided through a backlit LCD, programmable LEDs, keypad and menu-based operating system. PC access is also provided, either for local connection via a front-mounted USB port, or for remote connection via a rear-mounted RS485 port. The communication system allows the user to read and modify the relay settings, and to access data gathered by the relay s metering and recording functions. Further, data communication with substation control and automation systems is supported according to the MODBUS RTU. Table shows the members of the GRE130 series and identifies the functions to be provided by each member. 6

8 Table Series Members and Functions Model Number GRE A, 411A, 412A [APPL] setting 1PP 1PN 2PP 2PZ 3PP 3PN 3PV O/V IDMT O/V DT U/V IDMT U/V DT ZPS IDMT * ZPS DT * NPS IDMT NPS DT FRQ DFRQ Trip circuit supervision Self supervision CB state monitoring Trip counter alarm Multiple settings groups Metering Fault records Event records Disturbance records MODBUS RTU communication IEC communication IEC61850 communication (option) ( )* ( )* ( )* ( )* ( )* ( )* ( )* [APPL]setting; 1PP: single phase-to-phase voltage 1PN: single phase-to-neutral voltage 2PP: two phase-to-phase voltage 2PZ: two phase-to-phase voltage with zero phase voltage input 3PP: three phase-to-phase voltage 3PN: three phase-to-neutral voltage 3PV: three phase-to-neutral voltage with zero phase voltage input Ve: zero phase sequence voltage V 0 IDMT: inverse definite minimum time DT: definite time O/V: overvoltage protection U/V: undervoltage protection ZPS: zero phase sequence overvoltage NPS: negative phase sequence overvoltage FRQ: Frequency protection DFRQ: Frequency rate-of-change protection : V 0 calculated from three phase voltages ( )*: Optional communication for 412A model. CAUTION: Do not change the APPL setting under service condition of the relay. 7

9 2. Application Notes 2.1 Overvoltage and Undervoltage Protection Phase Overvoltage Protection GRE130 provides three independent phase overvoltage elements with programmable dropoff/pickup(do/pu) ratio. OV1 and OV2 are programmable for inverse time (IDMT) or definite time (DT) operation. OV3 has definite time characteristic only. Figure shows the characteristic of overvoltage elements. Pickup Dropoff 0 V Figure Characteristic of Overvoltage Elements The overvoltage protection element OV1 and OV2 have the IDMT characteristic defined by equation (1) following the form described in IEC : k t( G) = TMS c a ( V + ) 1 Vs where: t = operating time for constant voltage V (seconds), V = energising voltage (V), Vs = overvoltage setting (V), TMS = time multiplier setting. k, a, c = constants defining curve. The IDMT characteristic is illustrated in Figure In addition to the IDMT curve in Figure 2.1.2, a user configurable curve is available via scheme switches [OV1EN] and [OV2EN]. If required, set the scheme switch [OV EN] to C and set the curve defining constants k, a, c. These curves are defined in Table (1) Table Specification of Inverse Time Curves Curve Description k a c IDMT C (User Configurable) by step by 0.01 step by step 8

10 Overvoltage Inverse Time Curves Operating Time (secs) TMS = 10 TMS = TMS = 2 TMS = Applied Voltage (x Vs) Figure IDMT Characteristic The OV3 element is used for definite time overvoltage protection. Definite time reset The definite time resetting characteristic is applied to the OV1 and OV2 elements when the inverse time delay is used. If definite time resetting is selected, and the delay period is set to instantaneous, then no intentional delay is added. As soon as the energising voltage falls below the reset threshold, the element returns to its reset condition. If the delay period is set to some value in seconds, then an intentional delay is added to the reset period. If the energising voltage exceeds the setting for a transient period without causing tripping, then resetting is delayed for a user-definable period. When the energising voltage falls below the reset threshold, the integral state (the point towards operation that it has travelled) of the timing function (IDMT) is held for that period. This does not apply following a trip operation, in which case resetting is always instantaneous. Both OV1 and OV2 have a programmable drop off/pickup(do/pu) ratio. Scheme Logic Figures to 2.1.5show the scheme logic of the overvoltage protection OV1 to OV3. The OV1 protection allows the user to select either a definite time or an inverse time characteristic as shown in Figure The definite time protection is enabled by setting [OV1EN] to DT, and trip signal OV1 TRIP is given through the delayed pick-up timer TOV1. The inverse time protection is enabled by setting [OV1EN] to IDMT, and trip signal OV1 TRIP is given. The OV2 protection also provides selective definite time or inverse time characteristic as shown in 9

11 Figure The scheme logic of OV2 is the same as that of the OV1. Figure and Figure show the scheme logic of the definite time overvoltage protection OV3. The OV3 gives alarm signals OV3_ALARM through the delayed pick-up timers TOV3. The OV1 to OV3 protection can be disabled by the scheme switches [OV1EN] to [OV3EN]. 1( ) OV1 2( ) & & TOV1 t OV1-A_TRIP 3( ) 65 & & t OV1-B_TRIP 1( ) OV1 INST 2( ) [OV1EN] + 3( ) "DT" "IDMT" OV1_BLOCK & 1 & t s & & & OV1-C_TRIP OV1_TRIP Figure OV1 Overvoltage Protection 1( ) OV2 2( ) & & TOV2 t OV2-A_TRIP 3( ) 68 & & t OV2-B_TRIP 1( ) OV2 INST 2( ) [OV2EN] + 3( ) "DT" "IDMT" OV2_BLOCK & 1 & t s & & & OV2-C_TRIP OV2_TRIP Figure OV2 Overvoltage Protection 1( ) OV3 2( ) & & TOV3 t OV3-A_ALARM 3( ) 71 & & t OV3-B_ ALARM [OV3EN] + & & t OV3-C_ ALARM OV3_BLOCK s OV3_ ALARM Figure OV3 Overvoltage Protection ( )Note : Phases 1, 2 and 3 are replaced with the followings: 10

12 Phase Setting [APPL] setting 1PP 1PN 2PP / 2PZ 3PN / 3PV 3PP 1 phase-to-phase phase-to-neutral A - B phase A phase A - B phase B - C phase B phase B - C phase C phase C - A phase The table shows the setting elements necessary for the overvoltage protection and their setting ranges. Element Range Step Default Remarks OV V 0.1 V V OV1 threshold setting TOV1M OV1 time multiplier setting. Required if [OV1EN] = IDMT. TOV s 0.01 s 1.00 s OV1 definite time setting. Required if [OV1EN] = DT. TOV1R s 0.1 s 0.0 s OV1 definite time delayed reset. OV1DPR % 1 % 95 % OV1 DO/PU ratio setting. OV V 0.1 V V OV2 threshold setting TOV2M OV2 time multiplier setting. Required if [OV2EN] = IDMT. TOV s 0.01 s 1.00 s OV2 definite time setting. Required if [OV2EN] = DT. TOV2R s 0.1 s 0.0 s OV2 definite time delayed reset. OV2DPR % 1 % 95 % OV2 DO/PU ratio setting. OV V 0.1 V V OV3 threshold setting. TOV s 0.01 s 1.00 s OV3 definite time setting. OV3DPR % 1 % 95 % OV3 DO/PU ratio setting. [OV1EN] Off/DT/IDMT/C Off OV1 Enable [OV2EN] Off/DT/IDMT/C Off OV2 Enable [OV3EN] Off / On Off OV3 Enable 11

13 2.1.2 Phase Undervoltage Protection GRE130 provides three independent phase undervoltage elements. UV1 and UV2 are programmable for inverse time (IDMT) or definite time (DT) operation. UV3 has definite time characteristic only. Figure shows the characteristic of the undervoltage elements. 0 V Figure Characteristic of Undervoltage Elements The undervoltage protection element UV1 has an IDMT characteristic defined by equation (2) following the form described in IEC : k t( G) = TMS + c a 1 ( V Vs ) where: t = operating time for constant voltage V (seconds), V = energising voltage (V), Vs = undervoltage setting (V), TMS = time multiplier setting. k, a, c = constants defining curve. The IDMT characteristic is illustrated in Figure In addition to the IDMT curve in Figure 2.1.8, a user configurable curve is available via scheme switches [UV1EN] and [UV2EN]. If required, set the scheme switch [UV EN] to C and set the curve defining constants k, a, c. These curves are defined in Table The UV3 element is used for definite time overvoltage protection. Definite time reset The definite time resetting characteristic is applied to the UV1 and UV2 elements when the inverse time delay is used. If definite time resetting is selected, and the delay period is set to instantaneous, then no intentional delay is added. As soon as the energising voltage rises above the reset threshold, the element returns to its reset condition. If the delay period is set to some value in seconds, then an intentional delay is added to the reset period. If the energising voltage is below the undervoltage setting for a transient period without causing tripping, then resetting is delayed for a user-definable period. When the energising voltage rises above the reset threshold, the integral state (the point towards operation that it has travelled) of the timing function (IDMT) is held for that period. (2) 12

14 This does not apply following a trip operation, in which case resetting is always instantaneous. Undervoltage Inverse Time Curves Operating Time (secs) TMS = TMS = 5 TMS = 2 TMS = Applied Voltage (x Vs) Figure IDMT Characteristic Scheme Logic Figures to show the scheme logic of the undervoltage protection UV1 to UV3. The UV1 protection provides a selective definite time or inverse time characteristic as shown in Figure The definite time protection is enabled by setting [UV1EN] to DT, and trip signal UV1_TRIP is given through the delayed pick-up timer TUV1. The inverse time protection is enabled by setting [UV1EN] to IDMT, and trip signal UV1_TRIP is given. The UV2 protection also provides a selective definite time or inverse time characteristic as shown in Figure The scheme logic of UV2 is the same as that of the UV1. Figure shows the scheme logic of the definite time undervoltage protection UV3. The UV3 gives alarm signal UV3_ALARM through the delayed pick-up timers TUV3. The UV1 to UV3 protection can be disabled by the scheme switches [UV1EN] to [UV3EN]. In addition, there is a user programmable voltage threshold VBLK. If all measured phase voltages drop below this setting, then both UV1 to UV3 are prevented from operating. This function can be blocked by the scheme switch [VBLKEN]. The [VBLKEN] should be set to OFF (not used) when the UV elements are used as fault detectors, and set to ON (used) when used for load shedding. Note: The VBLK must be set lower than any other UV setting values. 13

15 1( ) UV1 2( ) & & TUV1 t UV1-A_TRIP VBLK 3( ) 1( ) UV1 INST 2( ) 3( ) & UVBLK 97 1 & & NON UVBLK & & t 0 t s & & UV1-B_TRIP 125 UV1-C_TRIP 122 UV1_TRIP [VBLKEN] + "ON" [UVTST] "OFF" [UV1EN] + "DT" 1 "IDMT" & UV1_BLOCK 18 1 Figure UV1 Undervoltage Protection 1( ) UV2 2( ) & & TUV2 t UV2-A_TRIP 3( ) 1( ) UV2 INST 2( ) 3( ) [UV2EN] + NON UVBLK "DT" "IDMT" 1 & & & & t 0 t s & UV2-B_TRIP 129 UV2-C_TRIP 126 UV2_TRIP UV2_BLOCK 19 1 & & Figure UV2 Undervoltage Protection 1( ) UV3 2( ) 3( ) & & & & TUV3 t 0 t UV3-A_ALARM UV3-B_ALARM [UV3EN] + "ON" NON BLK 20 UV3_BLOCK 1 & & t s 133 UV3-C_ALARM UV3_ALARM Figure UV3 Undervoltage Protection ( )Note : Phases 1, 2 and 3 are replaced with the followings: 14

16 Phase Setting [APPL] setting 1PP 1PN 2PP / 2PZ 3PN / 3PV 3PP 1 phase-to-phase phase-to-neutral A - B phase A phase A - B phase B - C phase B phase B - C phase C phase C - A phase The table shows the setting elements necessary for the undervoltage protection and their setting ranges. Element Range Step Default Remarks UV V 0.1 V 60.0 V UV1 threshold setting TUV1M UVI time multiplier setting. Required if [UV1EN] = IDMT. TUV s 0.01 s 1.00 s UV1 definite time setting. Required if [UV1EN] = DT. TUV1R s 0.1 s 0.0 s UV1 definite time delayed reset. UV V 0.1 V 40.0 V UV1 threshold setting TUV2M UVI time multiplier setting. Required if [UV2EN] = IDMT. TUV s 0.01 s 1.00 s UV1 definite time setting. Required if [UV2EN] = DT. TUV2R s 0.1 s 0.0 s UV1 definite time delayed reset. UV V 0.1 V 40.0 V UV3 threshold setting. TUV s 0.01 s 1.00 s UV3 definite time setting. VBLK V 0.1 V 10.0 V Undervoltage block threshold setting. [UV1EN] Off/ DT/ IDMT/ C DT UV1 Enable [VBLKEN] Off / On Off UV block Enable [UV2EN] Off/ DT/ IDMT/ C DT UV2 Enable [UV3EN] Off / On Off UV3 Enable 15

17 2.1.3 Zero Phase Sequence Overvoltage Protection The zero phase sequence overvoltage protection (ZPS) is applied to earth fault detection on unearthed, resistance-earthed system or on ac generators. The low voltage settings which may be applied make the ZPS element susceptible to any 3 rd harmonic component which may be superimposed on the input signal. Therefore, a 3 rd harmonic filter is provided to suppress such superimposed components. For earth fault detection, the following two methods are in general use. Measuring the zero sequence voltage produced by a VT residual connection (broken-delta connection) as shown in Figure Measuring the residual voltage across an earthing transformer as shown in Figure A B C V 0 GRE130 Figure Earth Fault Detection on Unearthed System A B G V 0 GRE130 Resistor Figure Earth Fault Detection on Generator Two independent elements ZPS1 and ZPS2 are provided. These elements are programmable for definite time delayed or inverse time delayed (IDMT) operation. The inverse time characteristic is defined by equation (3) following the form described in IEC : 16

18 where: k t( G) = TMS + c α (3) V0 1 VS t = operating time for constant voltage V 0 (seconds), V 0 = Zero sequence voltage (V), Vs = Zero sequence overvoltage setting (V), TMS = time multiplier setting. k, a, c = constants defining curve. The IDMT characteristic is illustrated in Figure In addition to the IDMT curve in Figure , a user configurable curve is available via scheme switches [ZPS1EN] and [ZPS2EN]. If required, set the scheme switch [ZPS EN] to C and set the curve defining constants k, a, c. These curves are defined in Table ZPS Overvoltage Inverse Time Curves Operating Time (secs) TMS = 10 TMS = TMS = 2 TMS = Applied Voltage (x Vs) Figure IDMT Characteristic for ZPS 17

19 Definite time reset A definite time reset characteristic is applied when the inverse time delay is used. Its operation is identical to that for the phase overvoltage protection. Scheme Logic Figures and show the scheme logic of the zero-phase sequence overvoltage protection. Two zero-phase sequence overvoltage elements ZPS1 and ZPS2 with independent thresholds output trip signals ZPS1 TRIP and ZPS2 TRIP through delayed pick-up timers TZOV1 and TZPS2. The tripping can be disabled by the scheme switches [ZPS1EN] and [ZPS2EN]. ZPS1 [ZPS1EN] + ZPS1 INST ZPS1_BLOCK "DT" "IDMT" 1 21 & 1 & TZPS1 t s & ZPS1 TRIP Figure ZPS1 Overvoltage Protection ZPS2 [ZPS2EN] + ZPS2 INST ZPS2_BLOCK "DT" "IDMT" 1 22 & 1 & TZPS2 t s & ZPS2_ALARM Figure ZPS2 Overvoltage Protection Setting The table below shows the setting elements necessary for the zero sequence overvoltage protection and their setting ranges. Element Range Step Default Remarks ZPS V 0.1V 20.0 V ZPS1 threshold setting (V0) for tripping. TZPS1M ZPS1 time multiplier setting. Required if [ZPS1EN]=IDMT. TZPS s 0.01 s 1.00 s ZPS1 definite time setting. Required if [ZPS1EN]=DT. TZPS1R s 0.1 s 0.0 s ZPS1 definite time delayed reset. ZPS V 0.1V 40.0 V ZPS2 threshold setting (V0) for alarming. TZPS2M ZPS2 time multiplier setting. Required if [ZPS2EN]=IDMT. TZPS s 0.01 s 1.00 s ZPS2 definite time setting. Required if [ZPS2EN]=DT. TZPS2R s 0.1 s 0.0 s ZPS2 definite time delayed reset. [ZPS1EN] Off /DT/ IDMT/ C DT ZPS1 Enable [ZPS2EN] Off / On Off ZPS2 Enable 18

20 2.1.4 Negative Phase Sequence Overvoltage Protection The negative phase sequence overvoltage protection (NPS) is used to detect voltage unbalance conditions such as reverse-phase rotation, unbalanced voltage supply etc. The NPS protection is applied to protect three-phase motors from the damage which may be caused by the voltage unbalance. Unbalanced voltage supply to motors due to a phase loss can lead to increases in the negative sequence voltage. The NPS protection is also applied to prevent the starting of the motor in the wrong direction, if the phase sequence is reversed. Two independent elements NPS1 and NPS2 are provided. The elements are programmable for definite time delayed or inverse time delayed (IDMT) operation. The inverse time characteristic is defined by equation (4) following the form described in IEC where: k t( G) = TMS + c α (4) V2 1 VS t = operating time for constant voltage V 2 (seconds), V 2 = Negative sequence voltage (V), Vs = Negative sequence overvoltage setting (V), TMS = time multiplier setting. k, a, c = constants defining curve. The IDMT characteristic is illustrated in Figure In addition to the IDMT curve in Figure , a user configurable curve is available via scheme switches [NPS1EN] and [NPS2EN]. If required, set the scheme switch [NPS EN] to C and set the curve defining constants k, a, c. These curves are defined in Table

21 NPS Overvoltage Inverse Time Curves Operating Time (secs) TMS = 10 TMS = TMS = 2 TMS = Applied Voltage (x Vs) Figure IDMT Characteristic for NPS Definite time reset A definite time reset characteristic is applied to the NPS1 element when the inverse time delay is used. Its operation is identical to that for the phase overvoltage protection. Scheme Logic Figures and show the scheme logic of the negative sequence overvoltage protection. Two negative sequence overvoltage elements NPS1 and NPS2 with independent thresholds output trip signals NPS1 TRIP and NPS2 TRIP through delayed pick-up timers TNPS1 and TNPS2. The tripping can be disabled using scheme switches [NPS1EN] and [NPS2EN]. NPS1 [NPS1EN] + NPS1 INST NPS1_BLOCK "DT" "IDMT" 1 23 & 1 & TNPS1 t s & NPS1 TRIP Figure NPS1 Overvoltage Protection 20

22 NPS2 [NPS2EN] + NPS2 INST NPS2_BLOCK "DT" "IDMT" 1 24 & 1 & TNPS2 t s & NPS2_ALARM Figure NPS2 Overvoltage Protection Setting The table below shows the setting elements necessary for the negative sequence overvoltage protection and their setting ranges. The delay time setting TNPS1 and TNPS2 is added to the inherent delay of the measuring elements NPS1 and NPS2. The minimum operating time of the NPS elements is approximately 200ms. Element Range Step Default Remarks NPS V 0.1V 20.0 V NPS1 threshold setting for tripping. TNPS1M NPS1 time multiplier setting. Required if [NPS1EN]=IDMT. TNPS s 0.01 s 1.00 s NPS1 definite time setting. Required if [NPS1EN]=DT. TNPS1R s 0.1 s 0.0 s NPS1 definite time delayed reset. NPS V 0.1V 40.0 V NPS2 threshold setting for alarming. TNPS2M NPS2 time multiplier setting. Required if [NPS2EN]=IDMT. TNPS s 0.01 s 1.00 s NPS2 definite time setting. Required if [NPS2EN]=DT. TNPS2R s 0.1 s 0.0 s NPS2 definite time delayed reset. [NPS1EN] Off /DT/ IDMT/ C Off NPS1 Enable [NPS2EN] Off / On Off NPS2 Enable 21

23 2.2 Frequency Protection For a four-stage frequency protection, GRE130 incorporates dedicated frequency measuring elements and scheme logic for each stage. Each stage is programmable for underfrequency, overfrequency or frequency rate-of-change protection. Underfrequency protection is provided to maintain the balance between the power generation capability and the loads. It is also used to maintain the frequency within the normal range by load shedding. Overfrequency protection is typically applied to protect synchronous machines from possible damage due to overfrequency conditions. Frequency rate-of-change protection is applied to ensure that load shedding occurs very quickly when the frequency change is very rapid. A-phase to B-phase voltage is used to detect frequency Frequency element Underfrequency element UF operates when the power system frequency falls under the setting value. Overfrequency element OF operates when the power system frequency rises over the setting value. These elements measure the frequency and check for underfrequency or overfrequency every 5 ms. They operate when the underfrequency or overfrequency condition is detected 16 consecutive times. The outputs of both the UF and OF elements is invalidated by undervoltage block element (FRQBLK) operation during an undervoltage condition. Figure shows the characteristics of the UF and OF elements. Figure Underfrequency and Overfrequency Elements Frequency rate-of-change element The frequency rate-of-change element calculates the gradient of frequency change (df/dt). GRE130 provides two rate-of-change elements, a frequency decay rate element (D) and a frequency rise rate element (R). These elements measure the change in frequency (Δf) over a time interval (Δt=100ms), as shown Figure and calculate the Δf/Δt every 5 ms. They operate when the frequency change exceeds the setting value 50 consecutive times. The output of both the D and R elements is invalidated by undervoltage block element (FRQBLK) operation during undervoltage condition. 22

24 Hz Δ f Δ t sec Figure Frequency Rate-of-Change Element Scheme Logic Figure shows the scheme logic of the frequency protection for stage 1. The first frequency element F11, the second F12, the frequency rise rate-of-change element DFR1 and frequency decay rate-of-change element DFD1 can all output a trip command independently under the condition that the system voltage is higher than the setting of the undervoltage element FVBLK. F & & 231 t S F1 E 235 F RQ1 TRIP F12 DF-R & O U B OO 1 + [ FT1 ] UU OFF & 1 & & 232 t S 233 F2 Scheme Logic Selection : [Logic1] DFR DF-D1 214 D FVBLK BOTH + [ DFT1 ] OFF 42 FRQ1 BLOCK 1 & R 1 1 & 234 DFD Figure FRQ1 Frequency Protection Logic To apply the various types of frequency protection, the GRE130 has the following three scheme switches for each stage. For stage 1, [FT1]: This switch selects the frequency protection to apply as well as provide the measuring elements F11 and F12 with an overfrequency or underfrequency characteristic. 23

25 [FT1] setting F11 / F12 characteristic F11 F12 Protection selected O OF(*) - Overfrequency protection only with F11 element U UF(**) - Underfrequency protection only with F11 element B OF UF Overfrequency protection with F11 element and underfrequency protection with F12 element OO OF OF Overfrequency protection both with F11 and F12 elements UU UF UF Underfrequency protection both with F11 and F12 elements Off OF OF To block frequency protection (*) OF: Overfrequency characteristic (**)UF: Underfrequency characteristic [DFT1]: This switch selects which frequency rate-of-change protection to apply. The following protections can be selected by the [DFT1] settings. [DFT1] setting R D BOTH Off Protection selected Frequency rise rate-of-change protection only Frequency decay rate-of-change protection only Both of frequency rise rate-of-change and decay rate-of-change protections To block frequency rate-of-change protection [LOGIC1]: This switch is provided in the scheme logic selection circuit in Table and determines the trip command combination of frequency element output and frequency rate-of-change element output. The following table shows the [Logic1] setting and corresponding combinations. Table Frequency protection logic [Logic1] Setting Scheme Logic Trip Command Logic ( +:OR, x : AND ) L1 F1 F2 DFR DFD 1 E E = F1 + F2 + DFR + DFD L2 F1 F2 DFR DFD 1 & 1 E E = F1 x (DFR + DFD) + F2 L3 F1 F2 DFR DFD 1 & 1 E E = F1 + F2 x (DFR + DFD) L4 F1 F2 DFR DFD 1 & & 1 E E = (F1 + F2) x (DFR + DFD) 24

26 L5 F1 F2 DFR DFD & & 1 E E = F1 x DFR + F2 x DFD The individual scheme logic for stages 2 to 4 are similar to that of stage 1 except that the device names of the measuring elements, timers, scheme switches and binary input signals change and the logic described above is applied to stages 2 to 4. F & & 236 t S F1 E 240 F RQ2 TRIP F22 DF-R & O U B OO 1 + [ FT2 ] UU OFF & 1 & & 237 t S 238 F2 Scheme Logic Selection : [Logic2] DFR DF-D2 218 D FVBLK BOTH + [ DFT2 ] OFF 43 FRQ2 BLOCK 1 & R 1 1 & 239 DFD Figure FRQ2 Frequency Protection Logic F & & 241 t S F1 E 245 F RQ3 TRIP F32 DF-R & O U B OO 1 + [ FT3 ] UU OFF & 1 & & 242 t S 243 F2 Scheme Logic Selection : [Logic3] DFR DF-D3 222 D FVBLK BOTH + [ DFT3 ] OFF 44 FRQ3 BLOCK 1 & R 1 1 & 244 DFD Figure FRQ3 Frequency Protection Logic 25

27 F & & 246 t S F1 E 250 F RQ4 TRIP F42 DF-R & O U B OO 1 + [ FT4 ] UU OFF & 1 & & 247 t S 248 F2 Scheme Logic Selection : [Logic4] DFR DF-D4 226 D FVBLK BOTH + [ DFT4 ] OFF 45 FRQ4 BLOCK 1 & R 1 1 & 249 DFD Figure FRQ4 Frequency Protection Logic Setting The setting elements necessary for the frequency protection and their setting ranges are shown in the table below. Element Range Step Default Remarks F 1 (*) Hz 0.01 Hz Hz First frequency element setting ( Hz 0.01 Hz Hz ) F Hz 0.01 Hz Hz Second frequency element setting ( Hz 0.01 Hz Hz ) DF (**) Hz/s 0.1 Hz/s 0.5 Hz/s Frequency rate-of-change (**) FVBLK(***) V 1 V 40 V Undervoltage block TF s 0.01 s 1.00 s Timer setting of first frequency element TF s 0.01 s 1.00 s Timer setting of second frequency element FT Off / O / U / B / OO / UU B Frequency protection selection DFT Off / R / D / Both Both Frequency rate-of-change protection selection Logic L1 / L2 / L3 / L4 / L5 L1 Scheme logic selection (*): Number 1 to 4 enter into for stages 1 to 4 respectively. (**): DF is a common setting element name for DFR and DFD. (***): FVBLK is common to stage 1 to 4. 26

28 2.3 Trip and Alarm Signal Output GRE130 provides various trip and alarm signal outputs such as three-phase and single-phase trip and alarm for each protection. Figure shows the trip and alarm signals grouped for each protection. GRE130 provides 4 or 8 auxiliary relays for binary outputs as described in Section After the trip signal has disappeared, following the clearance of the fault, the reset time of the tripping output relay can be programmed. The setting is respective for each output relay. When the relay is latched, it can be reset with the RESET key on the relay front panel or via a binary input. This resetting resets all of the output relays collectively. For the tripping output relay, a check must be made to ensure that the tripping circuit is open by monitoring the status of a circuit breaker auxiliary contact prior to the tripping output relay resetting, in order to prevent the tripping output relay from directly interrupting the circuit breaker tripping coil current. OV1 TRIP OV2 TRIP UV1 TRIP UV2 TRIP ZPS1 TRIP NPS1 TRIP FRQ1 TRIP FRQ2 TRIP FRQ3 TRIP FRQ4 TRIP GEN_TRIP OV1-A TRIP OV2-A TRIP UV1-A TRIP UV2-A TRIP GEN_TRIP-A OV1-B TRIP OV2-B TRIP UV1-B TRIP UV2-B TRIP GEN_TRIP-B OV1-C TRIP OV2-C TRIP UV1-C TRIP UV2-C TRIP GEN_TRIP-C ZPS1_TRIP 375 GEN. TRIP-N Figure Tripping and Alarm Outputs 27

29 OV3 ALARM UV3 ALARM ZPS2 ALARM NPS2 ALARM GEN_ALARM OV3-A ALARM UV3-A ALARM GEN_ALARM-A OV3-B ALARM UV3-B ALARM GEN_ALARM-B OV3-C ALARM UV3-C ALARM GEN_ALARM-C ZPS2 ALARM 384 GEN_ALARM-N Figure Tripping and Alarm Outputs (cont d) Pick-up signals GRE130 provides various pick-up signal outputs to select the signal No. for pick-up. The pick-up signal of IDMT elements are output from ***-INST shown as each scheme logic. When the DT elements operate, the ***-INST element is NOT output. 28

30 3. Technical Description 3.1 Hardware Description Outline of Hardware Modules The case outline of GRE130 is shown in Appendix E. As shown in Figure 3.1.1, the human machine interface (HMI) panel has a liquid crystal display (LCD), light emitting diodes (LED), operation keys and a USB type-b connector on the front panel. The LCD consists of 16 columns by 8 rows (128x64dots) with a back-light and displays recording, status and setting data. There are a total of 14 LED indicators and their signal labels and LED colors are defined as follows: Label Color Remarks IN SERVICE Green Lit when the relay is in service and flashing when the relay is in Test menu. TRIP Red Lit when a trip command is issued. ALARM Yellow Lit when relay alarm is detected. Relay Fail Red Lit when a relay failure is detected. CB CLOSED Red/Green/ Yellow Lit when CB is closed. CB OPEN Green Lit when CB is open. LOCAL Yellow Lit when Local Control is enabled REMOTE Yellow Lit when Remote Control is enabled (LED1) Red/Green/ User-configurable Yellow (LED2) (LED3) (LED4) (LED5) (LED6) Red/Green/ Yellow Red/Green/ Yellow Red/Green/ Yellow Red/Green/ Yellow Red/Green/ Yellow User-configurable User-configurable User-configurable User-configurable User-configurable LED1 to LED6 are user-configurable. Each is driven via a logic gate which can be programmed for OR gate or AND gate operation. Further, each LED has a programmable reset characteristic, settable for instantaneous drop-off, or for latched operation. A configurable LED can be programmed to indicate the OR combination of a maximum of 4 elements, and the LED color can be changed to one of three colors- (Red / Green / Yellow), the individual status of which can be viewed on the LCD screen as Virtual LEDs. For the setting, see Section For the operation, see Section The TRIP LED and an operated LED if latching operation is selected, must be reset by the user, 29

31 either by pressing the RESET key, by energising a binary input which has been programmed for Remote Reset operation, or by a communications command. Other LEDs operate as long as a signal is present. The RESET key is ineffective for these LEDs. Further, the TRIP LED is controlled with the scheme switch [AOLED] whether it is lit or not by the output of an alarm element such as OV4 ALARM, UV4 ALARM, etc.. The CB CLOSED and CB OPEN LEDs indicate CB condition. The CB CLOSED LED color can be changed to one of three colors-(red / Green / Yellow). The LOCAL / REMOTE LED indicates the CB control hierarchy. When the LOCAL LED is lit, the CB can be controlled using the and keys on the front panel. When the REMOTE LED is lit, the CB can be controlled using a binary input signal or via relay communications. When neither of these LEDs are lit, the CB control function is disabled. The key starts the Digest screen (Metering, Virtual LED) view on the LCD. The key will scroll the screen through Virtual LED Metering Indication and back-light off when the LCD is in the Digest screen mode. The ENTER key starts the Main menu indication on the LCD. The END key clears the LCD indication and turns the LCD back-light off when the LCD is in the MAIN MENU. The operation keys are used to display the records, status and setting data on the LCD, to input settings or to change settings. The USB connector is a B-type connector. This connector is used for connection with a local personal computer. Light emitting diodes (LED) Liquid crystal display Light emitting diodes (LED) Operation keys Motor status Control keys To a local PC USB type B connector Figure Front Panel (model 410, 411) 30

32 3.2 Input and Output Signals AC Input Signals Table shows the AC input signals necessary for the GRE130 model and their respective input terminal numbers. Their terminal numbers depend on their scheme switch [APPL] setting. Table AC Input Signals : Scheme switch [APPL] setting Term. No. TB1 at 410/411 TB2 at 412 Model 410, 411, 412 1PP 1PN 2PP 2PZ 3PN 3PV 3PP 1-2 Phase-tophase voltage Phase-toneutral voltage A-B phase voltage A-B phase voltage A phase voltage A phase voltage A-B phase voltage B-C phase voltage B-C phase voltage B phase voltage B phase voltage B-C phase voltage C phase voltage C phase voltage C-A phase voltage 7-8 Ve Ve --- Ve --- Ve Ve Binary Input Signals The GRE130 provides 2 (Model 410) or 6 (Model 411 / 412) programmable binary input circuits. Each binary input circuit is programmable, and provided with the function of Logic level inversion, detection threshold voltage change and function selection. Logic level inversion and detection threshold voltage change The binary input circuit of the GRE130 is provided with a logic level inversion function, a pick-up and drop-off delay timer function and a detection threshold voltage change as shown in Figure Each input circuit has a binary switch BISNS which can be used to select either normal or inverted operation. This allows the inputs to be driven either by normally open or normally closed contacts. Where the driving contact meets the contact conditions then the BISNS can be set to Norm (normal). If not, then Inv (inverted) should be selected. The pick-up and drop-off delay times can be set 0.0 to s respectively. The binary input detection nominal voltage is programmable by the user, and the setting range varies depending on the rated DC power supply voltage. In the case that a 110V / 220Vdc rated model is ordered, the input detection nominal voltage can be set to 48V, 110V or 220V for BI1 and BI2, and to 110V or 220V for BI3-BI6. In the case of a 24 / 48Vdc model, the input detection nominal voltage can be set to 12V, 24V or 48V for BI1 and BI2, and to 24V or 48V for BI3-BI6. The binary input detection threshold voltage (i.e. minimum operating voltage) is normally set at 77V and 154V for supply voltages of 110V and 220V respectively. In the case of 24V and 48V supplies, the normal thresholds are 16.8V and 33.6V respectively. Binary inputs can be configured for operation in a Trip Circuit Supervision (TCS) scheme by setting the [TCSPEN] switch to Enable. For the case where TCS using 2 binary inputs is to be applied (refer to Section 3.3.3), then the binary input detection threshold of BI1 and BI2 should be set to less than half of the rated dc supply 31

33 voltage. The logic level inversion function, pick-up and drop-off delay timer and detection voltage change settings are as follow: Element Contents Range Step Default BI1SNS BI6SNS Binary switch Norm/ Inv Norm BITHR1 * BI1-2 nominal voltage 48 / 110 / 220 (12 / 24 / 48 ) (24 / 48 / 110 ) BITHR2 * BI3-6 nominal voltage 110 / 220 (24 / 48) (48 / 110) 110 (24) (48) 110 (24) (110) TCSPEN TCS enable Off / On / Opt-On Off BI1PUD BI6PUD Delayed pick-up timer s 0.01s 0.00 BI1DOD BI6DOD Delayed drop-off timer s 0.01s 0.00 *At the PC interface software RSM100 (Relay Setting and Monitoring system), BI threshold voltage settings are indicated by V1, V2 and V3. The V1, V2 and V3 are distinguished with 11th digit of ordering code for supply voltage, as shown below,: Supply voltage (11th digt of ordering cord) V1 V2 V V (-1x-xx) BITH1 48V 110V 220 BITH2 110V 220V V (-2x-xx) BITH1 24V 48V 110V BITH2 48V 110V V (-Ax-xx) BITH1 12V 24V 48V BITH2 24V 48V - Four alarm messages (Alarm1 to Alarm4) can be set. The user can define a text message within 16 characters for each alarm. The messages are valid for any of the input signals BI1 to BI2 or BI6 by setting. Then when inputs associated with that alarm are raised, the defined text is displayed on the LCD. The binary input detection threshold of BI1 and BI2 should be set to less than half of the rated dc supply voltage. The logic level inversion function, pick-up and drop-off delay timer and detection voltage change settings are as follow: 32

34 (+) ( ) BI1 BI2 BI6 GRE130 BI1 BI2 BI3 BI6 BI1PUD t 0 BI2PUD t 0 [BITHR1] "220V" "110V" "48V" BI6PUD t 0 [BITHR2] "220V" + BI1DOD 0 t BI2DOD 0 t BI6DOD 0 t [BI1SNS] "Norm" "Inv" [BI2SNS] "Norm" "Inv" [BI6SNS] "Norm" "Inv" BI1 command BI2 command BI6 command "110V" + 1 0V Figure Logic Level Inversion Function selection The input signals BI1 COMMAND to BI6 COMMAND are used for the functions listed in Table Each input signal can be allocated for one or some of those functions by setting. For the setting, refer to Section The Table also shows the signal name corresponding to each function used in the scheme logic and the LCD indication and driving contact condition required for each function. BI1 COMMAND [OV1BLK] "ON" [OV2BLK] "ON" [OV3BLK] "ON" OV1 BLOCK OV2 BLOCK OV3 BLOCK [Alarm4] "ON" Alarm 4 Figure Function Scheme Logic The logic of BI2 COMMAND to BI6 COMMAND are the same as that of BI1 COMMAND as shown in Figure

35 Table Function of Binary Input Signals Functions Signal Names (*1) Driving Contact Condition Overvoltage protection1 block OV1 BLOCK / OV 1BLK Closed to block Overvoltage protection2 block OV2 BLOCK / OV 2BLK Closed to block Overvoltage protection3 block OV3 BLOCK / OV 3BLK Closed to block Undervoltage protection1 block UV1 BLOCK / UV 1BLK Closed to block Undervoltage protection2 block UV 2 BLOCK / UV 2BLK Closed to block Undervoltage protection3 block UV 3 BLOCK / UV 3BLK Closed to block Zero phase sequence OV1 block ZPS1 BLOCK / ZP1BLK Closed to block Zero phase sequence OV2 block ZPS2 BLOCK / ZP2BLK Closed to block Negative phase sequenceov1 block NPS1 BLOCK / NP1BLK Closed to block Negative phase sequenceov2 block NPS2 BLOCK / NP2BLK Closed to block Frequency protection1 block FRQ1 BLOCK / FRQ1BLK Closed to block Frequency protection2 block FRQ2 BLOCK / FRQ2BLK Closed to block Frequency protection3 block FRQ3 BLOCK / FRQ3BLK Closed to block Frequency protection4 block FRQ4 BLOCK / FRQ4BLK Closed to block Trip circuit supervision TC FAIL / TCFALM Trip supply State transition for cold load protection, trip supervision and CB monitoring CB CONT OPN / CBOPN CB normally open contact closed. CB monitoring CB CONT CLS / CBCLS CB normally closed contactclosed. Indication remote reset REMOTE RESET / RMTRST Closed to reset TRIP LED indication and latch of binary output relays Synchronize clock SYNC CLOCK / SYNCLK Synchronize clock Disturbance record store STORE RECORD / STORCD Closed to store the record Alarm 1 Alarm 1 / Alarm1 Closed to display Alarm 1 text. Alarm 2 Alarm 2 / Alarm2 Closed to display Alarm 2 text. Alarm 3 Alarm 3 / Alarm3 Closed to display Alarm 3 text. Alarm 4 Alarm 4 / Alarm4 Closed to display Alarm 4 text. Remote Open Remote OPEN / RMTOPN CB normally open contact. Remote Close Remote CLOSE / RMTCLS CB normally close contact. Control Lock Control Lock / CNTLCK Closed to block (*1) : Signal names are those used in the scheme logic / LCD indication. The binary input signals can be programmed to switch between four settings groups. Element Contents Range Step Default BI1SGS BI6SGS Setting group selection OFF / 1 / 2 OFF Four alarm messages can be set. The user can define a text message using up to 22 characters for each alarm. The messages are valid for any of the input signals BI1 to BI6 by setting. Then when inputs associated with that alarm are raised, the defined text is displayed on the LCD. 34

36 3.2.3 Binary Output Signals The number of binary output signals and their output terminals are as shown in Appendix E. All outputs, except the relay failure signal, can be configured. GRE130 provides 5 auxiliary relays which is composed of one auxiliary relay FAIL for the relay fail output and four programmable auxiliary relays BO1 to BO4. The reset time of the tripping output relay following fault clearance can be programmed. The setting is respective for each output relay. The signals shown in the signal list in Appendix A can be assigned to output relays BO1 to BO4 individually or in arbitrary combinations. The output relays BO1 and BO2 connect to CB OPEN / CLOSE for CB control. The CB close control switch is linked to BO1 and the CB open control switch is linked to BO2, when the control function is enabled. Signals can be combined using either an AND circuit or OR circuit with 4 gates each as shown in Figure The output circuit can be configured according to the setting menu. Appendix G shows the factory default settings. Further, each BO has a programmable reset characteristic, settable for instantaneous drop-off Ins, for delayed drop-off Dl, for dwell operation Dw or for latching operation Lat by the scheme switch [RESET]. The time of the delayed drop-off Dl or dwell operation Dw can be set by TBO. When Dw is selected, the BO outputs for the TBO set time if the input signal does not continue on the TBO set time. If the input signal continues, the BO output is continuous for the time duration of the input signal. When the relay is latched, it can be reset with the RESET key on the relay front panel or a binary input. This resetting resets all the output relays collectively. The relay failure contact closes when a relay defect or abnormality in the power supply circuit is detected. Signal List Appendix A & 4 GATES or 1 Auxiliary relay 1 4 GATES & & TBO 0 t [RESET] + "Dw" "Dl" "Lat" & s S F/F R + Reset button BI1_COMMAND RMTRST Figure Configurable Output 35

37 Settings The setting elements necessary for binary output relays and their setting ranges are as follows: Element Range Step Default Remarks [RESET] Ins Dl / Dw /Lat See Appendix A Output relay reset time. Instantaneous, delayed, dwell or latched. TBO s 0.01s See Appendix A PLC (Programmable Logic Controller) Function GRE130 is provided with a PLC function which enables user-configurable sequence logic based upon binary signals. The sequence logic with timers, flip-flops, AND, OR, XOR, NOT logic, etc. can be produced by using the PC software PLC tool and linked to signals corresponding to relay elements or binary circuits. Configurable binary inputs and the initiation of fault and disturbance records can be programmed using the PLC function. Temporary signals are provided for complicated logic or for using a user-configured signal in many logic sequences. PLC logic is assigned to protection signals by using the PLC tool. For details of the PLC tool, refer to the PLC tool instruction manual. (see 6F2S0810 Instruction manual PLC TOOL) Figure Sample Screen for PLC Tool 36

38 3.3 Automatic Supervision Basic Concept of Supervision Although the protection system is in a non-operating state under normal conditions, it continuously monitors the power system in order to detect a fault which may occur at any time, and must operate for the fault without fail. Therefore, the automatic supervision function, which checks the health of the protection system during normal operation, plays an important role. The GRE130 implements an automatic supervision function, based on the following concepts: The supervising function should not affect the protection performance. Perform supervision with no omissions wherever possible. When a failure occurs, it is recorded as an Alarm record, the user should be easily able to identify the location of the failure. Under relay failure detection, CB open control is enabled, but CB close control is disabled Relay Monitoring The relay is supervised by the following functions. AC input imbalance monitoring The AC current input is monitored to check that the following equation is satisfied and the health of the AC input circuit is verified. Zero sequence voltage monitoring for [APPL]= 3PN setting Va + Vb + Vc / (V) Negative sequence voltage monitoring for [APPL] 1PN or 1PP setting Va + a 2 Vb + avc / (V) where, a = Phase shift operator of 120, a 2 = Phase shift operator of 240 The zero sequence monitoring and negative sequence monitoring allow high sensitivity detection of failures that have occurred in the AC input circuits. The negative sequence voltage monitoring allows high sensitivity detection of failures in the voltage input circuit, and it is effective for detection particularly when cables have been connected with the incorrect phase sequence. A/D accuracy checking An analog reference voltage is applied to a prescribed channel in the analog-to-digital (A/D) converter, and a check is made to ensure that the data after A/D conversion is within a prescribed range, and that the A/D conversion characteristics are correct. Memory monitoring Memory is monitored as follows, depending on the type of memory, and checks are done to verify that memory circuits are healthy: Random access memory monitoring: Writes/reads prescribed data and checks the storage function. Program memory monitoring: Setting value monitoring: Checks the checksum value of the written data. Checks discrepancies between the setting values stored in duplicate. 37

39 Watchdog Timer A hardware timer that is cleared periodically by the relay software is provided, to check that the relay software is running normally. Power supply Monitoring The secondary voltage level is monitored, and a check is made to ensure that the DC voltage is within a prescribed range. Issuing of Alarms The alarms are issued when the failure continues for a predetermined time. The times for each monitoring item are as follows; A/D accuracy checking, memory monitoring, Watch Dog Timer, DC supply monitoring: less than 1s AC input imbalance monitoring, sampling synchronization monitoring : 15s Trip Circuit Supervision The circuit breaker tripping control circuit can be monitored by either one or two binary inputs, as described below. Trip Circuit Supervision using 1 binary input The circuit breaker tripping control circuit can be monitored using a binary input. Figure shows a typical scheme. When the trip circuit is intact, a small current flows through the binary input, the circuit breaker auxiliary contacts and the trip coil. This current flows for both the breaker open and closed conditions. Then the logic signal output of the binary input circuit TC FAIL is "1" under healthy conditions. If the trip supply is lost or if a connection becomes open circuit, then the binary input resets and TC FAIL becomes "0". Figure shows the scheme logic. A trip circuit fail alarm TCSV is output when the TC FAIL output is "0". If the trip circuit failure is detected, then ALARM LED is lit and Err: TC is displayed in LCD message. Monitoring is enabled by setting the scheme switch [TCSPEN] to "ON" or "OPT-ON" and one BI is selected for "TCFAIL". When "OPT-ON" is selected, monitoring is enabled only while the CB is closed. GRE130 Circuit Breaker +ve Trip Supply Trip Output CB Trip Coil -ve Trip Supply Binary Input CB Aux. Contacts Figure Trip Circuit Supervision by 1 binary input 38

40 TC FAIL 1 1 (BI command) TC FAIL (BI command) & t 0 0.4s 0 t 0.4s TCSV CB status closed & 1 [TCSPEN] + "OPT-ON" "ON" Figure Supervision Scheme Logic Trip Circuit Supervision using 2 binary inputs The circuit breaker tripping control circuit can be monitored using two binary inputs. Figure shows a typical scheme. When the trip circuit is intact a small current flows in the photo-couplers, the circuit breaker auxiliary contacts and the trip coil. This current flows for both the breaker open and breaker closed conditions. If the trip circuit supply is lost or if a connection becomes open circuit then the TCS issues a Trip Circuit Fail alarm. Monitoring is enabled by setting scheme switch [TCSPEN] to "ON" or "OPT-ON" and the two BIs selected for " TCFAIL". When "OPT-ON" is selected, monitoring is enabled only while the CB is closed. TCS using 2BIs should be applied using BI1 and BI2 for the BI inputs. For TCS using 2BIs the BI nominal operating voltage ([BITHR1]) should be set to a value of approximately half that of the trip supply voltage. If the trip supply voltage is 110V (or 24V), [BITHR1] can be set at "48" (or "12"). GRE130 Circuit Breaker +ve Trip Supply Trip Output CB Aux. Contacts CB Trip Coil -ve Trip Supply Resistor Binary Input (BI1) Binary Input (BI2) Figure Trip Circuit Supervision by 2 binary inputs The resistors connected in series with the binary inputs are to prevent unnecessary tripping of the circuit breaker if any one component suffers a short-circuit condition. The value of resistance should be chosen to limit the current flowing through the circuit breaker trip coil to 60mA in the event of a short circuit of BI1 with the circuit breaker closed. A typical value for a 110V dc rated circuit is 3.3kΩ. 39

41 3.3.4 Circuit Breaker Monitoring The relay provides the following circuit breaker monitoring functions. Circuit Breaker State Monitoring Circuit breaker state monitoring is provided for checking the health of the circuit breaker (CB). If two binary inputs are programmed to the functions CB_N/O_CONT and CB_N/C_CONT, then the CB state monitoring function becomes active. Under normal circumstances these inputs are in opposite states. Figure shows the scheme logic. If both show the same state for a period of five seconds, then a CB state alarm CBSV operates and Err:CB and CB err are displayed in an LCD message and event record message respectively. The monitoring can be enabled or disabled by setting the scheme switch [CBSMEN]. Normally open and normally closed contacts of the CB are connected to binary inputs BIm and BIn respectively, and the functions of BIm and BIn are set to CBOPN=ON and CBCLS=ON respectively. (Refer to Section ) CB CONT_OPN =1 1 & t 0 5.0s 1271 CBSV CB CONT_CLS [CBSMEN] "ON" + Figure CB State Monitoring Scheme Logic Circuit Breaker Condition Monitoring Periodic maintenance of a CB is required in order to check the trip circuit, the operating mechanism and the interrupting capability. Generally, maintenance is based on a time interval or a number of fault current interruptions. The following CB condition monitoring functions are provided to determine the time for maintenance of a CB: The number of trip operations are counted for maintenance of the trip circuit and CB operating mechanism. The trip counter increments the number of tripping operations performed. An alarm is issued and informs the user of the time for maintenance when the count exceeds a user-defined setting TCALM. The trip count alarm can be enabled or disabled by setting the scheme switch [TCAEN]. Operating time monitoring is provided for CB mechanism maintenance. It checks the CB operating time and the need for mechanism maintenance is advised if the CB operation is slow. The operating time monitor records the time between issuing the tripping signal and the phase currents falling to zero. An alarm is issued when the operating time for any phase exceeds a user-defined setting OPTALM. The operating time is set in relation to the specified interrupting time of the CB. The operating time alarm can be enabled or disabled by setting the scheme switch [OPTAEN]. The maintenance program should comply with the switchgear manufacturer s instructions Failure Alarms When a failure is detected by the automatic supervision, it is followed with an LCD message, LED indication, external alarm and event recording. Table summarizes the supervision items and alarms. 40

42 The LCD messages are shown on the "Auto-supervision" screen, which is displayed automatically when a failure is detected or displayed by pressing key. The event record messages are shown on the "Event record" screen by opening the "Record" sub-menu. The alarms are retained until the failure is recovered. The alarms can be disabled collectively by setting the scheme switch [AMF] to "OFF". The setting is used to block unnecessary alarms during commissioning, test or maintenance. When the Watchdog Timer detects that the software is not running normally, LCD display and event recording of the failure may not function normally. Supervision Item AC input imbalance monitoring A/D accuracy check Memory monitoring LCD Message Err:V0, Err:V2 (1) Table Supervision Items and Alarms LED "IN SERVICE" LED "ALARM" LED "Relay fail" On/Off (2) On (4) Alarm record Message V0 err, V2 err, Relay fail or Relay fail-a (2) (1) Off On (4) Relay fail Watchdog Timer ---- Off On (4) ---- Power supply monitoring Err:DC Off (3) Off Relay fail-a Trip circuit supervision Err:TC On On Off TC err, Relay fail-a CB state monitoring Err:CB On On Off CB err, Relay fail-a CB condition monitoring ALM: TP On On Off TP COUNT ALM, Trip count alarm COUNT Relay fail-a Operating time alarm ALM: OP time On On Off OP time ALM, Relay fail-a (1): Various messages are provided as expressed with "Err:---" in the table in Section (2): The LED is on when the scheme switch [SVCNT] is set to "ALM" and off when set to "ALM & BLK" (refer to Section 3.3.5). The message "Relay fail-a" is recorded when the scheme switch [SVCNT] is set to "ALM". (3): Whether the LED is lit or not depends on the degree of the voltage drop. (4): The binary output relay "FAIL" operates. The failure alarm and the relationship between the LCD message and the location of the failure is shown in Table in Section Trip Blocking When a failure is detected by the following supervision items, the trip function is blocked for as long as the failure exists, and is restored when the failure is removed. A/D accuracy check Memory monitoring Watchdog Timer When a fault is detected by the AC input imbalance monitoring, the scheme switch [SVCNT] setting can be used to determine if both tripping is blocked and an alarm is output(alm&blk), or if only an alarm is output (ALM). 41

43 3.3.7 Setting The setting element necessary for the automatic supervision and its setting range are shown in the table below. Element Range Step Default Remarks [SVCNT] ALM&BLK/ALM Off Automatic supervision and AC input imbalance supervision [TCSPEN] Off/On Off Trip circuit supervision [CBSMEN] Off/On Off CB condition supervision [TCAEN] OFF/ON OFF Trip count alarm TCALM Trip count alarm threshold setting The scheme switch [SVCNT] is set in the "Application" sub-menu. Other scheme switches are set in the "Scheme sw" sub-menu. 3.4 Recording Function The GRE130 is provided with the following recording functions: Fault recording Event recording Disturbance recording These records are displayed on the LCD screen of the relay front panel or on a local or remote PC Fault Recording Fault recording is initiated by a tripping command from the GRE130 and the following items are recorded for one fault: Date and time Trip mode Operating phase Power system quantities Up to the 4 most-recent faults are stored as fault records. If a new fault occurs when 4 faults have been stored, the record of the oldest fault is deleted and the record of the latest fault is then stored. Date and time occurrence This is the time at which a tripping command has been initiated. The time resolution is 1 ms using the relay internal clock. Trip mode This shows the protection scheme such as OV1, UV1 etc. that output the tripping command. Faulted phase This is the phase to which a tripping command is output. 42

44 Power system quantities The following power system quantities are recorded both pre-fault and post-fault. - Magnitude and phase angle of phase voltages (Va, Vb, Vc) - Magnitude and phase angle of phase-to-phase voltages (Vab, Vbc, Vca) - Magnitude and phase angle of zero sequence voltage which is measured directly in the form of the system residual voltage (Ve) - Magnitude and phase angle of symmetrical component voltages (V1, V2, V0) - Frequency (f) Event Recording The events shown in Appendix B are recorded with a 1 ms resolution time-tag when the status changes. For BI1 to BI6 commands, the user can select the items to be recorded and their status change mode to initiate recording as below. One of the following four modes is selectable. Modes Not to record the event. To record the event when the status changes to "operate". To record the event when the status changes to "reset". To record the event when the status changes both to "operate" and "reset". Setting N O R B For the setting, see Section The default setting is "B" Up to 200 records can be stored. If an additional event occurs after 200 records have been stored, the oldest event record is overwritten. The LCD display only shows 100 records. All event records (200 records) can be displayed on a PC. For how to download all of the event records onto a PC refer to the RSM100 instruction manual Disturbance Recording Disturbance recording is initiated when the overvoltage or undervoltage starter element operates or a tripping command is initiated. Further, disturbance recording is initiated when a start command is initiated. The user can configure four disturbance record triggers. The records include a maximum of 8 analogue signals as shown in Table 3.4.1, 32 binary signals and the dates and times at which recording started. Any binary signal shown in Appendix B can be assigned using the binary signal setting of a disturbance record. Table Analog Signals for Disturbance Recording Model Model 410, 411, 412 APPL setting 1PP 1PN 2PP 2PV 3PN 3PZ 3PP Vph Vph Vab Vab Va Va Vab Analog signals Vbc Vbc Vb Vb Vbc Vc Vc Vca Ve Ve Ve Ve Ve 43

45 The LCD display only shows the dates and times of the disturbance records stored. Details can be displayed on a PC. For how to obtain disturbance records on a PC, see the RSM software instruction manual. The pre-fault recording time can be set between 0.1 and 4.9s and the post-fault recording time can be set between 0.1 and 3.0s. But the combined duration for the pre-fault and post-fault recording times is 5.0s or less. The number of records stored depends on the post-fault recording time. The approximate relationship between the post-fault recording time and the number of records stored is shown in Table (Recording time = pre-fault recording time + post-fault recording time) Settings Note: If the recording time setting is changed, the records stored so far are deleted. Table Post Fault Recording Time and Number of Disturbance Records Stored Recording time 0.2s 1.0s 1.5s 2.0s 3.0s 4.0s 5.0s 50Hz Hz The elements necessary for initiating a disturbance recording and their setting ranges are shown in the table below. Element Range Step Default Remarks Time s 0.1 s 0.3 s Pre--fault recording time Time s 0.1 s 3.0 s Post--fault recording time OV V 0.1 V V Overvoltage detection UV V 0.1 V 60.0 V Undervoltage detection ZPS V 0.1 V 20.0 V Zero sequence overvoltage detection NPS V 0.1 V 20.0 V Negative sequence overvoltage detection Starting disturbance recording using a tripping command or the starter element listed above is enabled or disabled by setting the following scheme switches. Element Range Step Default Remarks [Trip] OFF/ON ON Start by tripping command [OV] OFF/ON ON Start by OV operation [UV] OFF/ON ON Start by UV operation [ZPS] OFF/ON ON Start by ZPS operation [NPS] OFF/ON ON Start by NPS operation 44

46 3.5 Metering Function The GRE130 relay measures current and demand values of phase and phase-to-phase voltages, residual voltage, symmetrical component voltages and frequency. The measurement data shown below is displayed on the LCD of the relay front panel or on a local or remote PC. The following quantities are measured and updated every second. - Magnitude and phase angle of phase voltage (Va, Vb, Vc) - Magnitude and phase angle of phase-to-phase voltage (Vab, Vbc, Vca) - Magnitude and phase angle of symmetrical component voltage (V1, V2, V0) - Frequency (f) - Maximum and minimum of frequency (f: max, min) - Frequency rate-of-change (df / dt) The above system quantities are displayed in values on the primary side or on the secondary side as determined by a setting. To display accurate values, it is necessary to set the VT ratio as well. For the setting method, see "Setting the metering" in and "Setting the parameter" in In the case of the maximum and minimum values display above, the measured quantity is averaged over a rolling 15 minute time window, and the maximum and minimum recorded average values are shown on the display screen. The displayed quantities depend on [APPL] settings and relay model as shown in Table Input voltage greater than 0.06V at the secondary side are required for measurement. Phase angles above are expressed taking the positive sequence voltage as a reference phase angle, where leading phase angles are expressed as positive, (+). Table Displayed Quantity Model Model 410 APPL 1PP 1PN 2PP 2PV 3PN 3PZ 3PP Van Vbn Vcn Vph Vab Vbc Vcb V1 V2 V0 f f max f min df / dt 45

47 3.6 Control Function The relay is provided with the following control functions: CB control Interlocking Change of CB control hierarchy The CB control function operates the CB by using the open command key or close command key on the front panel of the relay, a BI command from remote state or by using the communication function. The interlock function blocks the CB close command using the control lock signal of the BI command.the change of CB control hierarchy changes the CB control state to Local or Remote. The Local mode is controled at the front panel of the relay (see chapter 4.2.7). The Remote mode is controlled by BI command or by a communication function of Modbus (see Appendix M) or IEC (see Appendix P). 46

48 4. User Interface 4.1 Outline of User Interface The user can access the relay from the front or rear panel. Local communication with the relay is also possible using RSM (Relay Setting and Monitoring) via a USB port. Furthermore, remote communication is also possible using MODBUS communication via an RS485 port. This section describes the front panel configuration and the basic configuration of the menu tree for the local human machine communication ports and HMI (Human Machine Interface) Front Panel As shown in Figure 3.1.1, the front panel is provided with a liquid crystal display (LCD), light emitting diodes (LED), operation keys, and USB type B connector. (a) Model 410, 411 (b) Model 412 Figure Front Panel of GRE130 (without cover) LCD The LCD screen, provided with an 8-line, 16-character display and back-light, provides the user with information such as records, statuses and settings. The LCD screen is normally unlit, but pressing key will display the digest screen and pressing ENTER key will display the mainmenu screen. These screens are turned off by pressing the END key when viewing the LCD display at the top of the main-menu. If any display is left for approximately 5 minutes without operation, the back-light will go off. LED There are 14 LED displays. The signal labels and LED colors are defined as follows: 47

49 Label Color Remarks IN SERVICE Green Lit when the relay is in service and flashing when the relay is in Test menu. TRIP Red Lit when a trip command is issued. ALARM Yellow Lit when an alarm command is issued or a relay alarm is detected. Relay Fail Red Lit when a relay failure is detected. CB CLOSED R /G / Y Lit when CB is closed. CB OPEN Green Lit when CB is open. Local Yellow Lit when Local Control is enabled Remote Yellow Lit when Remote Control is enabled (LED1) R / G / Y user-configurable (LED2) R / G / Y user-configurable (LED3) R / G / Y user-configurable (LED4) R / G / Y user-configurable (LED5) R / G / Y user-configurable (LED6) R / G / Y user-configurable LED1-6 are configurable. For setting, see Section The TRIP LED illuminates when the relay operates and remains lit even after the trip command releases. The TRIP LED can be extinguished by pressing the RESET key. Other LEDs are lit as long as a signal is present and the RESET key is invalid while the signal is maintained. Operation keys The operation keys are used to display records, status, and set values on the LCD, as well as to input or change set values. The function of each operation key is as follows:,, CANCEL :, : Used to move between lines displayed on a screen and to enter numerical values and text strings. Used to cancel entries and return to the upper screen. END : ENTER : Used to end the entering operation, return to the upper screen or turn off the display. Used to store or establish entries. RESET key Pressing the RESET key causes the Trip LED to turn off and latched output relays to be released. Control keys The control keys are used for CB control. When the LCD display cursor is not at the CB control position-(cb close/open, Local / Remote), the Control keys will not function. : Used for CB open operation. When the CB is in the open position, the key does not function. 48

50 2 : Used for CB close operation. When the CB is in the closed position, the key does not function 3 L/R : Used for CB control hierarchy (local / remote) change. CAUTION The CB close control key is linked to BO1 and the CB open control key is linked to BO2, when the control function is enabled. USB connector The USB connector is a B-type connector for connection with a local personal computer Communication Ports The following three interfaces are provided as communication ports: USB port RS485 port Optional Communication Unit port USB port This connector is a standard B-type connector for USB transmission and is mounted on the front panel. By connecting a personal computer (PC) to this connector, setting operation and display functions can be performed. RS485 port The RS485 port is used for MODBUS communication to connect between relays and to construct a network communication system. The RS485 port is provided on the rear of the relay as shown in Figure TB2 TB1 RS485 Port Figure Location of RS485 Port 49

51 Optional Fibre or Ethernet LAN port for model 412A An optional Ethernet LAN port can be connected to substation automation system via an Ethernet communication networks using the IEC protocol. 100Base-TX (T1: RJ-45 connector) for Ethernet LAN is provided at the rear of the relay, as shown in Figure TB3 TB2 TB for Optional Communication Port 4.2 Operation of the User Interface Figure Location of Optional Communication Port The user can access such functions as recording, measurement, relay setting and testing with the LCD display and operation keys. Note: LCD screens depend on the relay model and the scheme switch setting. Therefore, LCD screens described in this section are samples for a typical model LCD and LED Displays Displays during normal operation When the GRE130 is operating normally, the green "IN SERVICE" LED is lit and the LCD is off. Press the key when the LCD is off to display the digest screens which are the "Indication", "Metering", "Latest fault", "Auto-supervision" and "Alarm Display" screens in turn. "Latest fault", "Auto-supervision" and "Alarm Display" screens are displayed only when there is some data. The following are the digest screens and can be displayed without entering the menu screens. Indication I N D 1 [ ] I N D 2 [ ] 50

52 Metering V a n * *. * * V V b n * *. * * V V c n * *. * * V V 0 * *. * * V V 1 * *. * * V V 2 * *. * * V f * *. * * H z f / t * *. * * H z / s To clear the latched indications (LEDs, LCD screen of Latest fault) of the latest fault indication, press RESET key for 3 seconds or more. For any display, the back-light is automatically turned off after five minutes. Indication This screen shows the status of elements assigned as a virtual LED. I N D 1 [ ] I N D 2 [ ] Displays in tripping Latest fault Status of element, Elements depend on user setting. 1: Operate, 0: Not operate (Reset) P h a s e A B C : Faulted phases. O V 1 : Tripping element If a fault occurs and a tripping command is output when the LCD is off, the red "TRIP" LED is lit as well as other configurable LEDs if assigned to trigger by tripping. Press the to scroll the LCD screen to read the rest of the messages. Press the RESET key for more than 3s to reset the LEDs; the Trip LED and configurable LEDs (LED1 through LED6) are assigned to a latched signal if triggered by tripping. To return from the menu screen to the digest "Latest fault" screen, do the following: Return to the top screen of the menu by repeatedly pressing the END or CANCEL key. 51

53 Press the END key to turn off the LCD when the LCD is displaying the top menu. Press the key to display the digest screens. Displays in automatic supervision operation Auto-supervision E r r : R O M, A / D If the automatic supervision function detects a failure when the LCD is off, the "Auto-supervision" screen is displayed automatically, showing the location of the failure, and the "ALARM" LED lights. Press the to display other digest screens in turn including the "Metering" and "Latest fault" screens. Press the RESET key to turn off the LEDs. However, if the failure continues, the "ALARM" LED remains lit. After recovery from a failure, the "ALARM" LED and "Auto-supervision" display turn off automatically. If a failure is detected when any of the screens is displayed, the current screen remains displayed and the "ALARM" LED lights. When any of the menu screens is displayed, the RESET key is available. To return to the digest "Auto-supervision" screen, do the following: Return to the top screen of the menu by repeatedly pressing the END or CANCEL key. Press the END key to turn off the LCD. Press the key to display the digest screens. Alarm Display Alarm Display (ALM1 to ALM4) * * * * * * * * * * * * * * * * * * * * * * : A L M 1 The four alarm screens can be provided, and their text messages are defined by the user. (For setting, see Section ) These alarms are raised by associated binary inputs. Press the to display other digest screens in turn including the "Metering" and "Latest fault" screens. To clear the Alarm Display, press RESET key. Clearing is available after displaying up to ALM Relay Menu Figure shows the menu hierarchy for the GRE130. The menu has some sub-menus, "Record", "Status", "Set. (view)", "Set. (change)", and "Test". For details of the menu hierarchy, see Appendix D. 52

54 Menu Record Status Set. (view) Set. (change) Control Test Fault Event Disturbance Counter Metering Binary I/O Relay element Time sync. Clock adjust. LCD contrast Version Description Comms Record Status Protection Binary I/P Binary O/P LED Control Frequency Password Description Comms Record Status Protection Binary I/P Binary O/P LED Control Frequency Password(Ctrl) Local / Remote CB close/open Password(test) Switch Binary O/P Record Figure Relay Menu In the "Record" menu, the fault records, event records, disturbance records and counts such as trip count can be accessed. 53

55 Status The "Status" menu displays the power system quantities, binary input and output status, relay measuring element status, signal source for time synchronisation (BI or RSM), adjusts clock and LCD contrast. Set. (view) The "Set. (view)" menu displays the relay version, description, relay address and baud rate for RSM, the current settings of record, status, protection, binary inputs, configurable binary outputs and configurable LEDs. Set. (change) The "Set. (change)" menu is used to change the settings for password, description, relay address and baud rate for Modbus communication, record, status, protection, binary inputs, configurable binary outputs and configurable LEDs. Since this is an important menu and is used to change settings related to relay tripping, it has password security protection. Control The "Control" menu is used to operate the CB. When the cursor (>) is in the Local / Remote position, the CB control hierarchy change over key L/R is enabled. When the cursor (>) is in the CB close/open position, the CB control keys and are enabled. Since this is an important menu and is related to relay tripping, it has password security protection. Test The "Test" menu is used to set test switches and to forcibly operate binary output relays. When the LCD is off, press the ENTER key to display the top "MAIN MENU" screen and then proceed to the relay menus. M A I N M E N U > R e c o r d S t a t u s S e t. ( v i e w ) S e t. ( c h a n g e ) C o n t r o l T e s t To display the "MAIN MENU" screen when the digest screen is displayed, press the key to turn off the LCD, then press the ENTER key. Press the END key when the top screen is displayed to turn off the LCD. An example of the sub-menu screen is shown below. The top line shows the hierarchical layer. The 8th line under some items is not displayed for all of the screens. " ",or " " or " " displayed on the far right shows that lower or upper lines exist. To move the cursor downward or upward for setting or for viewing other lines not displayed on the window, use the and keys. 54

56 / 4 S c h e m e s w T r i p _ > T r i p 1 O f f / O n B I 1 O f f / O n O V 1 O f f / O n U V 1 O f f / O n Z P S 1 O f F / O n N P S 1 O f f / O n F R Q 1 O f f / O n To return to the higher screen or move from the right side screen to the left side screen in Appendix D press the END or CANCEL key. The CANCEL key can also be used to return to the higher screen but it must be used carefully because it may cancel entries made so far. To move between screens of the same hierarchical depth, first return to the higher screen and then move to the lower screen Displaying Records The sub-menu of "Record" is used to display fault records, event records, disturbance records and counts such as trip count Displaying Fault Records To display fault records, do the following: Open the top "MAIN MENU" screen by pressing the ENTER key. Select "Record" to display the "Record" sub-menu. / 1 R e c o r d > F a u l t E v e n t D i s t u r b a n c e C o u n t e r Select "Fault" to display the "Fault" screen. 55

57 / 2 F a u l t > V i e w r e c o r d C l e a r Select "View record" to display the dates and times of the fault records stored in the relay from the top in new-to-old sequence. / 3 F a u l t > / J a n / : 0 0 : / J a n / : 0 0 : / J a n / : 0 0 : Move the cursor to the fault record line to be displayed using the and keys and press the ENTER key to display the details of the fault record. The lines which are not displayed in the window can be displayed by pressing the and keys. / 4 F a u l t 1 P r e f a u l t v a l u e s V a n * *. * * k V * * *. * V b n * *. * * k V * * *. * V c n * *. * * k V * * *. * V a b * *. * * k V * * *. * V b c * *. * * k V * * *. * V c a * *. * * k V * * *. * V p h * *. * * k V V 0 * *. * * k V * * *. * V 1 * *. * * k V * * *. * V 2 * *. * * k V * * *. * f * *. * * H z f / t * *. * * H z / s 56

58 Note: Phase angles above are expressed taking that of positive sequence voltage (V1) as a reference phase angle. When the V1 is not available, phase angles are not displayed. Frequency above is displayed as "0Hz" when only residual voltage (zero sequence voltage) is input to the relay To clear all the fault records, do the following: Open the "Record" sub-menu. Select "Fault" to display the "Fault" screen. Select "Clear" to display the following confirmation screen. C l e a r r e c o r d s E N D = Y C A N C E L = N Press the END (= Y) key to clear all the fault records stored in non-volatile memory. If all fault records have been cleared, the "Latest fault" screen of the digest screens is not displayed Displaying Event Records To display event records, do the following: Open the top "MAIN MENU" screen by pressing the ENTER key. Select "Record" to display the "Record" sub-menu. Select "Event" to display the "Event" screen. / 2 E v e n t > V i e w r e c o r d C l e a r Select "View record" to display the events with date from the top in new-to-old sequence. / 3 E v e n t 2 4 / A u g / O V 1 A t r i P O n 2 4 / A u g / O V 1 A t r i p O N 2 4 / A u g / O V 1 A t r i p O n 2 4 / A u g / O V 1 A t r i p O n 2 4 / A u g / O V 1 A t r i p O n 57

59 The time is displayed by pressing the key. / 3 E v e n t 1 3 : 2 2 : O V 1 A t r i p O n 1 3 : 2 2 : O V 1 A t r i p O N 1 3 : 2 2 : O V 1 A t r i p O n 1 3 : 2 2 : O V 1 A t r i p O n 1 3 : 2 2 : O V 1 A t r i p O n Press the key to return the screen with date. The lines which are not displayed in the window can be displayed by pressing the and keys. To clear all the event records, do the following: Open the "Record" sub-menu. Select "Event" to display the "Event" screen. Select "Clear" to display the following confirmation screen. C l e a r r e c o r d s E N D = Y C A N C E L = N Press the END (= Y) key to clear all the event records stored in non-volatile memory. "Data lost" or "E.record CLR" and "F.record CLR" are displayed at the initial setting Displaying Disturbance Records Details of disturbance records can be displayed on the PC screen only (*); the LCD displays only the recorded date and time for all disturbances stored in the relay. They are displayed in the following sequence. (*) For the display on the PC screen, refer to the RSM100 manual. Open the top "MAIN MENU" screen by pressing the ENTER key. Select "Record" to display the "Record" sub-menu. Select "Disturbance" to display the "Disturbance" screen. 58

60 / 2 D i s t u r b a n c e > V i e w r e c o r d C l e a r Select "View record" to display the date and time of the disturbance records from the top in new-to-old sequence. / 3 D i s t u r b a n c e / J a n / : 0 0 : / J a n / : 0 0 : / J a n / : 0 0 : The lines which are not displayed in the window can be displayed by pressing the and keys. To clear all the disturbance records, do the following: Open the "Record" sub-menu. Select "Disturbance" to display the "Disturbance" screen. Select "Clear" to display the following confirmation screen. C l e a r r e c o r d s E N D = Y C A N C E L = N Press the END (= Y) key to clear all the disturbance records stored in non-volatile memory Displaying Counter Open the top "MAIN MENU" screen by pressing the ENTER key. Select "Record" to display the "Record" sub-menu. Select "Counter" to display the "Counter" screen. / 2 C o u n t e r > V i e w c o u n t e r C l e a r T r i p s C l e a r T r i p s A (*) C l e a r T r i p s B (*) C l e a r T r i p s C (*) (*) Note: These settings are only available when single phase External Trip BI functions 59

61 are used. In this case, the main "Clear Trips" option is not available. Select "Display" to display the counts stored in the relay. / 3 C o u n t e r T r i p s * * * * * * T r i p s A * * * * * * (*) T r i p s B * * * * * * (*) T r i p s C * * * * * * (*) (*) Note: These settings are only available when single phase External Trip BI functions are used. In this case, the main "Trips" option is not available. The lines which are not displayed in the window can be displayed by pressing the and keys. To clear each count, do the following: Open the "Record" sub-menu. Select "Counter" to display the "Counter" screen. Select "Clear Trips" to display the following confirmation screen. C l e a r T r i p s? E N D = Y C A N C E L = N Select "Clear Trips A" to display the following confirmation screen. C l e a r T r i p s A? E N D = Y C A N C E L = N Select "Clear Trips B" to display the following confirmation screen. C l e a r T r i p s B? E N D = Y C A N C E L = N Select "Clear Trips C" to display the following confirmation screen. C l e a r T r i p s C? E N D = Y C A N C E L = N Press the END (= Y) key to clear the count stored in non-volatile memory. 60

62 4.2.4 Status Display From the sub-menu "Status", the following status condition can be displayed on the LCD: Metering data of the protected line, apparatus, etc. Status of binary inputs and outputs Status of measuring elements output Status of time synchronisation source Status of clock adjustment Status of LCD contrast The data is updated every second Displaying Metering Data To display metering data on the LCD, do the following: Select "Status" on the top "MAIN MENU" screen to display the "Status" screen. / 1 S t a t u s > M e t e r i n g B i n a r y I / O R e l a y e l e m e n t T i m e s y n c. C l o c k a d j u s t. L C D c o n t r a s t. Select "Metering" to display the "Metering" screen. / 4 M e t e r i n g V a n * *. * * k V APPL = 3PP * * *. * V b n * *. * * k V * * *. * V c n * *. * * k V * * *. * V a b * *. * * k V APPL = 3PN * * *. * V b c * *. * * k V * * *. * V c a * *. * * k V * * *. * V p h * *. * * k V APPL = 1PP 61

63 V 0 * *. * * k V * * *. * V 1 * *. * * k V * * *. * V 2 * *. * * k V * * *. * f * *. * * H z f m a x * *. * * H z f m i n * *. * * H z f / t * *. * * H z / s f / t x * *. * * H z / s f / t n * *. * * H z / s Note: Phase angles above are expressed taking that of positive sequence voltage (V1) as a reference phase angle. When the V1 is not available, phase angles are not displayed. Frequency above is displayed as "0Hz" when only residual voltage (zero sequence voltage) is input to the relay Displaying the Status of Binary Inputs and Outputs To display the binary input and output status, do the following: Select "Status" on the top "MAIN MENU" screen to display the "Status" screen. Select "Binary I/O" to display the binary input and output status. / 2 B i n a r y I / O I P [ ] O P [ ] O P 2 [ ] The display format is shown below. [ ] Input (IP) BI1 BI2 BI3 BI4 BI5 BI6 Output (OP) BO1 BO2 BO3 BO4 FAIL Output (OP2) BO5 BO6 BO7 BO8 Line 1 shows the binary input status. BI1 to BI6 correspond to each binary input signal. For the binary input signal, see Appendix B and G. The status is expressed with logical level "1" or "0" at the photo-coupler output circuit. BI3 to BI6 are not available for model 410. Line 2 shows the binary output status. All binary outputs BO1 to BO4 and FAIL are configurable. The status of these outputs is expressed with logical level "1" or "0" at the input circuit of the output relay driver. That is, the output relay is energised when the status is "1". FAIL is a normally closed contact for detection of a relay fail condition. Line 3 shows the binary output status for model 412. BO5-8 (OP2) are available only at model

64 Displaying the Status of Measuring Elements To display the status of measuring elements on the LCD, do the following: Select "Status" on the top "MAIN MENU" screen to display the "Status" screen. Select 3 "Ry element" to display the status of the relay elements. / 2 R y e l e m e n t A N O V 1-3 [ ] B N O V 1-3 [ ] C N O V 1-3 [ ] A B O V 1-3 [ ] B C O V 1-3 [ ] C A O V 1-3 [ ] O V 1-3 [ ] A N U V 1-3 [ ] B N U V 1-3 [ ] C N U V 1-3 [ ] A B U V 1-3 [ ] B C U V 1-3 [ ] C A U V 1-3 [ ] U V 1-3 [ ] V Z P S 1-2 [ 0 0 ] V N P S 1-2 [ 0 0 ] F R Q 1-4 [ ] The operation status of phase and residual overcurrent elements are shown as below. [ ] AN OV1-3 OV1 OV2 OV3 A phase OV elements BN OV1-3 OV1 OV2 OV3 B phase OV element CN OV1-3 OV1 OV2 OV3 C phase OV element AB OV1-3 OV1 OV2 OV3 A to B phase OV elements BC OV1-3 OV1 OV2 OV3 B to C phase OV element CA OV1-3 OV1 OV2 OV3 C to A phase OV element OV1-3 OV1 OV2 OV3 OV elements AN UV1-3 UV1 UV2 UV3 A phase UV element BN UV1-3 UV1 UV2 UV3 B phase UV element CN UV1-3 UV1 UV2 UV3 C phase UV element AB UV1-3 UV1 UV2 UV3 A to B phase UV element BC UV1-3 UV1 UV2 UV3 B to C phase UV element CA UV1-3 UV1 UV2 UV3 C to A phase UV element ZPS1-2 ZPS1 ZPS2 Zero Phase Sequence element NPS1-2 NPS1 NPS2 - - Negative Phase Sequence element FRQ1-4 FRQ1 FRQ2 FRQ3 FRQ4 Frequency element 63

65 The status of each element is expressed with logical level "1" or "0". Status "1" means the element is in operation Displaying the Status of the Time Synchronisation Source The internal clock of the GRE130 can be synchronised with external clocks such as the binary input signal clock, Modbus or IEC or SNTP(IEC61850). To display on the LCD whether these clocks are active (=Act.) or inactive (=Inact.) and which clock the relay is synchronised with, do the following: Select "Status" on the top "MAIN MENU" screen to display the "Status" screen. Select "Time sync." to display the status of time synchronisation sources. / 2 T i m e s y n c. * B I : A C T. M o d b u s : I n a c t. I E C S N T P I n a c t I n a c t The asterisk on the far left shows that the internal clock is synchronised with the marked source clock. If the marked source clock is inactive, the internal clock runs locally. Note: If the Binary input signal has not been detected for one hour or more after the last detection, the status becomes "inactive". For details of the setting time synchronisation, see Section Clock Adjustment To adjust the clock when the internal clock is running locally, do the following: Select "Status" on the "MAIN MENU" screen to display the "Status" screen. Select "Clock adjust." to display the setting screen. / / A u g / : 0 0 : 0 0 [ L ] > M i n u t e 0 _ H o u r 0 _ D a y M o n t h 2 6 _ 8 _ Y e a r _ 64

66 Lines 1 and 2 show the current date and time. The time can be adjusted only when the clock is running locally. When[BI], [M] or [S] is active, the adjustment is invalid. Enter a numerical value for each item and press the ENTER key. For details on how to enter a numerical value, see Press the END key to adjust the internal clock to the set hours without fractions and return to the previous screen. If a date which does not exist in the calendar is set and END is pressed, "**** Error ****" is displayed on the top line and the adjustment is discarded. Return to the normal screen by pressing the CANCEL key and adjust again LCD Contrast To adjust the contrast of LCD screen, do the following: Select "Status" on the "MAIN MENU" screen to display the "Status" screen. Select "LCD contrast" to display the setting screen. / 2 L C D C o n t r a s t Press the or key to adjust the contrast. The characters on the screen become thinner by pressing the key and thicker by pressing the key Viewing the Settings The sub-menu "Set. (view)" is used to view the settings made using the sub-menu "Set. (change)". The following items are displayed: Relay version Description Relay address and baud rate for Modbus communication or optional communication. Record setting Status setting Protection setting Binary input setting Binary output setting LED setting Control setting Frequency setting Enter an item on the LCD to display each item as described in the previous sections. 65

67 Relay Version To view the relay version, do the following. Press the "Set.(view)" on the main menu. / 1 S e t. ( v i e w ) > V e r s i o n D e s c r i p t i o n C o m m s R e c o r d S t a t u s P r o t e c t i o n B i n a r y I / P B i n a r y O / P L E D C o n t r o l Press the "Version" on the "Set.(view)" menu. / 2 V e r s i o n > R e l a y t y p e S o f t w a r e. Select "Relay type" to display the relay type form and model number. (ex.;gre a-10-10) G R E A Select "Software" to display the relay software type form and version. (ex.;gs1em1-03-a) S o f t w a r e G S 1 E M * P L C d a t a P G R E A * * * ( * * * * * * * * ) 66

68 Settings The "Description","Comms","Record", "Status","Protection","Binary I/P","Binary O/P","LED", "Control" and "Frequency" screens display the current settings input using the "Set. (change)" sub-menu Changing the Settings The "Set. (change)" sub-menu is used to make or change settings for the following items: Password Description Relay address and IP address Baud rate in IEC or Modbus IEC setting Recording setting Status setting Protection setting Binary input setting Binary output setting LED setting Control setting Frequency setting All of the above settings except the password can be seen using the "Set. (view)" sub-menu. CAUTION Modification of settings : Care should be taken when modifying settings for "active group", "scheme switch" and "protection element" in the "Protection" menu. Dependencies exist between the settings in the various menus, with settings in one menu becoming active (or inactive) depending on the selection made in another menu. Therefore, it is recommended that all necessary settings changes be made while the circuit breaker tripping circuit is disconnected. Alternatively, if it is necessary to make settings changes with the tripping circuit active, then it is recommended to enter the new settings into a different settings group, and then change the "active group" setting, thus ensuring that all new settings become valid simultaneously Setting Method There are three setting methods as follows: - To enter a selected item - To enter a text string - To enter numerical values To enter a selected item When the screen shown below is displayed, setting of the relay can be performed as follows. 67

69 The cursor can be moved to the upper or lower lines within the screen by pressing the and keys. If a setting (change) is not required, skip the line with the and keys. / 1 S e t. ( c h a n g e ) > P a s s w o r d D e s c r i p t i o n C o m m s R e c o r d S t a t u s P r o t e c t i o n B i n a r y I / P B i n a r y O / P L E D C o n t r o l F r e q u e n c y Move the cursor to a setting item. Press the ENTER key. To enter a text string Texts strings are entered under "Plant name" or "Description" screen. / 2 D e s c r i p t i o n > P l a n t n a m e D e s c r i p t i o n To select a character, use keys,, and to move the blinking cursor down, up, left and right. " " and " " on the final line indicate a space and backspace, respectively. A maximum of 22 characters can be entered. _ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z a b c d e f g h i j K l m n o p q r s t u v w x y z ( ) [ _ { } * / + - < = >! $ % & : ;,. ^ ` Set the cursor position in the bracket by selecting " " or " " and pressing the ENTER key. Move the blinking cursor to select a character. Press the ENTER key to enter the blinking character at the cursor position in the brackets. Press the END key to confirm the entry and return to the upper screen. 68

70 To correct the entered character, do either of the following: Discard the character by selecting " " and pressing the ENTER key and enter the new character. Discard the whole entry by pressing the CANCEL key and restart the entry from the beginning. To enter numerical values When the screen shown below is displayed, setting can be performed as follows: The number to the left of the cursor shows the current setting or default setting set at shipment. The cursor can be moved to the upper or lower lines within the screen by pressing the and keys. If a setting (change) is not required, skip the line with the and keys. Move the cursor to a setting line. Press the the or / 4 T i m e / S t a r t e r T i m e 1 _ s > T i m e s T i m e s O V V U V V Z P S V N P S V or key to set a desired value. The value can be raised or lowered by pressing key., Press the ENTER key to enter the value. After completing the setting on the screen, press the END key to return to the upper screen. To correct the entered numerical value, do the following. If it is before pressing the ENTER key, press the CANCEL key and enter the new numerical value. If it is after pressing the ENTER key, move the cursor to the line that is to be corrected by pressing the and keys and enter the new numerical value. Note: If the CANCEL key is pressed after any entry is confirmed by pressing the ENTER key, all the entries made so far on the screen concerned are canceled and screen returns to the upper one. To complete the setting Enter after making entries on each setting screen by pressing the ENTER key, the new settings are not yet used for operation, although they are stored in memory. To validate the new settings, take the following steps. Press the END key to return to the upper screen. Repeat this until the confirmation screen shown below is displayed. The confirmation screen is displayed just before returning to the "Set. (change)" sub-menu. 69

71 C h a n g e s e t t i n g s? E N T E R = Y C A N C E L = N When the screen is displayed, press the ENTER key to commence operation using the new settings, or press the CANCEL key to correct or cancel entries. In the latter case, the screen will return to the setting screen to enable re-entries. Press the CANCEL key to cancel entries that have been made so far and to return to the "Set. (change)" sub-menu Password For the sake of security of Setting changes and Testing, password protection can be set as follows: Select "Set. (change)" on the "MAIN MENU" screen to display the "Setting change" screen. Select "Password" to display the "Password" screen. Enter a 4-digit number within the brackets after "Input" and press the ENTER key. S e t. ( c h a n g e ) I n p u t [ _ ] < For confirmation, enter the same 4-digit number in the brackets after "Retype". S e t. ( c h a n g e ) R e t y p e [ _ ] < Press the END key to display the confirmation screen. If the retyped number is different from that first entered, the following message is displayed on the bottom of the "Password" screen before returning to the upper screen. "Unmatch passwd!" Re-entry is then requested. Select "Test" to set the password for the test. Set the password in the same manner as that of "Setting" above. Password trap After the password has been set, the password must be entered in order to enter the setting change screens. If "Set. (change)" or "Test" is entered on the top "MAIN MENU" screen, the password trap screen "Password" is displayed. If the password is not entered correctly, it is not possible to move to the "Setting (change)" or "Test" sub-menu screens. 70

72 S e t. ( c h a n g e ) P a s s w o r d [ _ ] < Canceling or changing the password To cancel the password protection, enter "0000" in the two brackets on the "Password" screen. The "Set. (change)" screen is then displayed without having to enter a password. The password can be changed by entering a new 4-digit number on the "Password" screen in the same way as the first password setting. If you forget the password Press CANCEL and RESET keys together for one second on the top "MAIN MENU" screen. The screen goes off, and the password protection of the GRE130 is canceled. Set the password again Plant Name To enter the plant name and other data, do the following. The data will be attached to records. Select "Set. (change)" on the "MAIN MENU" screen to display the " Set. (change)" screen. Select "Description" to display the "Description" screen. / 2 D e s c r i p t i o n > P l a n t n a m e D e s c r i p t i o n To enter the plant name, select "Plant name" on the "Description" screen. To enter special items, select "Description" on the "Description" screen. To enter the name for Alarm, select "Alarm " on the "Description" screen. _ A B C D E F G H I J K L M N O P Enter the text string. Q R S T U V W X Y Z a b c d e f g h i j k l m n o p q r s t u v w x y z ( ) [ _ { } * / + - < = >! $ % & : ;,. ^ ` 71

73 Communication If the relay is linked with Modbus or optional communication, the relay address must be set. Do this as follows: Select "Set.(change)" on the main "MAIN MENU" screen to display the "Set.(change)" screen. Select "Comms" to display the "Comms" screen. / 2 C o m m s > A d d r. / P a r a m. S w i t c h Select "Addr./Param." on the "Comms" screen to enter the relay address number. / 3 A d d r. / P a r a m. M o d b u s _ > M o d b u s 1 I E C 1 This setting is displayed if RS485P in comms switch settimg is IEC103. I P I P I P I P S M S M This setting is displayed if submodel of communication type is A-D. S M S M G W G W G W G W I P I P I P I P S M S M This setting is displayed if submodel of communication type is B or D. S M S M G W G W G W G W

74 I E C B 1 1 I E C B 2 2 I E C B 3 3 I E C B 4 4 I E C G T 1 I E C A T 1 I E C B T 1 I E C C T 1 I E C E 1 0 I E C E 2 0 This setting is displayed if RS485P in comms switch settimg is IEC103. I E C E 3 0 I E C E 4 0 I E C E 5 0 I E C E 6 0 I E C E 7 0 I E C E 8 0 I E C I 1 0 I E C I 2 0 I E C I 3 0 I E C I 4 0 I E C I 5 0 I E C I 6 0 I E C I 7 0 I E C I 8 0 I E C 2 B 1 1 I E C 2 B 2 2 I E C 2 B 3 3 I E C 2 B 4 4 I E C 2 G T 1 I E C 2 A T 1 I E C 2 B T 1 I E C 2 C T 1 This setting is displayed if submodel of communication type is 2 and RS485P in comms switch settimg is IEC103. I E C 2 E 1 0 I E C 2 E 2 0 I E C 2 E 3 0 I E C 2 E 4 0 I E C 2 E 5 0 I E C 2 E 6 0 I E C 2 E 7 0 I E C 2 E 8 0 I E C 2 I 1 0 I E C 2 I

75 I E C 2 I 3 0 I E C 2 I 4 0 I E C 2 I 5 0 I E C 2 I 6 0 This setting is displayed if submodel of communication type is 2 and RS485P in comms switch settimg is IEC103. I E C 2 I 7 0 I E C 2 I 8 0 S M O D E 0 G O I N T 1 s D E A D T 1 s This setting is displayed if submodel of communication type is A-D. This setting is displayed if submodel of communication type is A-D and RS485P in comms switch settimg is off. Enter the relay address number on the "Modbus" line for Modbus or the "IEC" line for IEC and press the ENTER key. Enter IP address for IP1-1 to IP1-4, Subnet mask for SM1-1 to SM1-4, Default gateway for GW1-1 to GW1-4, and SNTP server address for SI1-1 to SI2-4. two SNTP servers are available. Enter "0" or "1" on "SMODE" column to set the standard time synchronized mode for SNTP server. Using low accuracy level of time server, synchronized compensation to maintain synchronization accuracy may not be done automatically. Therefore enter "1", and synchronized compensation is done forcibly. The default setting is "0". Enter the IP address of the device for PG1-1 to PG2-4 if Ping response is checked. IP address:... (IP1-1. IP1-2. IP1-3. IP1-4) and (IP2-1. IP2-2. IP2-3. IP2-4) SM1-1 to SM2-4, GW1-1 to GW2-4, SI1-1 to SI2-4: same as above. Press the ENTER key. CAUTION: Do not duplicate the relay address number. Settings for IEC communication The lines "IECB1" to "IECB4" are used for auxiliary inputs for IEC103 events INF27 to INF30 in Appendix N. Assign signals to the columns "IECB1" to "IECB4" by entering the number corresponding to each signal referring to Appendix B. The lines "IECGT" to "IECCT" are used for fault indications for IEC103 events INF68 to INF71 in Appendix N. Assign signals to the columns "IECGT" to "IECCT" by entering the BO numbers (1 to 8) corresponding to the binary output settings. The lines "IECE1" to "IECE8" are used to assign the signals for user customization. Assign signals to the columns "IECE1" to "IECE8" by entering the number corresponding to each signal referring to Appendix B. Note: Assign "0" to the column when the function is not used. The lines "IECI1" to "IECI8" are used to assign the above signals from "IECE1" to "IECE8" to each INF number. Enter the INF number to the columns "IECI1" to "IECI8". Settings for IEC61850 communication Enter the time on "GOINT" to set the maximum GOOSE message publishing term if GOOSE message receive checked. Enter the time on "DEADT" to set the Keep Alive time of IEC communication. Setting for Modbus communication 74

76 Select "Switch" on the "Comms" screen to select the protocol and transmission speed (baud rate), etc., for Modbus, IEC and IEC / 3 S w i t c h R S B R > R S B R 9. 6 / I E C B L K 0 N o r m a l / B l o c k e d This setting is displayed if RS485P in comms switch settimg is IEC103. R S P 0 O f f / M o d / I E C E t h e r P 0 O f f / I E C B L K 0 N o r m a l / B l o c k e d This setting is displayed if submodel of communication type is A-D and RS485P in comms switch settimg is off. T S T M O D 0 O f f / O n G S E C H K 0 O f f / O n P I N G C H K 0 O f f / O n This setting is displayed if submodel of communication type is A0-D0. I E C G I 1 0 N o / Y e s I E C G I 2 0 N o / Y e s This setting is displayed if RS485P in comms switch settimg is IEC103. I E C G I 3 0 N o / Y e s I E C G I 4 0 N o / Y e s I E C G I 5 0 N o / Y e s I E C G I 6 0 N o / Y e s This setting is displayed if RS485P in comms switch settimg is IEC103. I E C G I 7 0 N o / Y e s I E C G I 8 0 N o / Y e s I E C 2 G I 1 0 N o / Y e s I E C 2 G I 2 0 N o / Y e s This setting is displayed if submodel of communication type is 2 and RS485P in comms switch settimg is IEC

77 I E C 2 G I 3 0 N o / Y e s I E C 2 G I 4 0 N o / Y e s I E C 2 G I 5 0 N o / Y e s I E C 2 G I 6 0 This setting is displayed if submodel of communication type is 2 and RS485P in comms switch settimg is IEC103. N o / Y e s I E C 2 G I 7 0 N o / Y e s I E C 2 G I 8 0 N o / Y e s I E C N F I / 2. 4 This setting is displayed if RS485P in comms switch settimg is IEC103. <RS485BR> This line is to select the baud rate when the Modbus or IEC protocols are applied. <IECBLK> Enter 1(=Blocked) to block the monitor direction in the IEC communication. <IECNFI > This line is to select the normalized factor (1.2 or 2.4) of the current measurand. <IECGI1-8 > These lines are to use the GI (General Interrogation) or not for user customized signals. If GI is to be used, enter 1(=Yes). <RS485P> This line is to select the communication protocol when the MODBUS or IEC system applied. <EtherP> This line is to select the communication protocol when the IEC61850 system applied. <61850BLK> Select 1 (=Blocked) to block transmission from relay to BCU for IEC61850 communication. When using the IEC61850 communication, select 0 (=Normal). <TSTMOD> Select 1 (=On) to set the test mode in IEC61850 communication. <GSECHK> This function is to alarm if any one of the GOOSE messages written in a GOOSE subscribe file cannot be received. Select 1 (=On) to execute a GOOSE receive check for IEC61850 communication. <PINGCHK> This function is to check the health of the network by regularly sending a Ping to IP address which is set on PG -. Select 1 (=On) to execute a Ping response check. 76

78 Select the number and press the ENTER key Setting the Recording function To set the recording function as described in Section 4.2.3, do the following: Select "Set. (change)" on the main "MAIN MENU" screen to display the "Set. (change)" screen. Select "Record" to display the "Record " screen. / 2 R e c o r d > E v e n t D i s t u r b a n c e C o u n t e r Setting the event recording Select "Event" to display the "Event" screen. / 3 E v e n t B I 1 c o m m. _ > B I 1 c o m m. 3 N / O / R / B B I 2 c o m m. 3 N / O / R / B B I 3 c o m m. 3 N / O / R / B B I 4 c o m m. 3 N / O / R / B B I 5 c o m m. 3 N / O / R / B B I 6 c o m m. 3 N / O / R / B Enter 0(=None) or 1(=Operate) or 2(=Reset) or 3(=Both) for BI command trigger setting and press the ENTER key. Setting the disturbance recording Select "Disturbance" to display the "Disturbance" screen. / 3 D i s t u r b a n c e > T i m e / S t a r t e r S c h e m e s w B i n a r y s i g. Select "Time/starter" to display the "Time/starter" screen. 77

79 / 4 T i m e / S t a r t e r T i m e 1 _ s > T i m e s T i m e s O V V U V V Z P S V N P S V Enter the recording time and starter element settings. To set each starter to either used or not used, do the following: Select "Scheme sw" on the "Disturbance" screen to display the "Scheme sw" screen. / 4 S c h e m e s w T r i p _ > T r i p 1 O f f / O n B I 1 O f f / O n O V 1 O f f / O n U V 1 O f f / O n Z P S 1 O f f / O n N P S 1 O f f / O n F R Q 1 O f f / O n D F R Q 1 O f f / O n Enter 1 to use as a starter. If not to be used as a starter, enter 0. To set each signal number to record binary signals, do the following: Select "Binary sig." on the "Disturbance" screen to display the "Binary sig." screen. / 4 B i n a r y s i g. S I G 1 _ > S I G S I G S I G S I G

80 S I G Enter the signal number to record binary signals in Appendix A. Setting the counter Select "Counter" to display the "Counter" screen. / 3 C o u n t e r > S c h e m e s w A l a r m s e t To set each counter to either used or not used, do the following: Select "Scheme sw" on the "Counter" screen to display the "Scheme sw" screen. / 4 S c h e m e s w T C S P E N _ > T C S P E N 1 O f f / O n / O p t - O n C B S M E N 1 O f f / O n T C A E N 1 O f f / O n Enter 1 to use as a counter. If not to be used as a counter, enter 0. To set the threshold setting, do the following: Select "Alarm set" on the "Counter" screen to display the "Alarm set" screen. / 4 A l a r m s e t T C A L M _ > T C A L M Enter the threshold settings Status To set the status display described in Section 4.2.4, do the following: Select "Status" on the "Set. (change)" sub-menu to display the "Status" screen. / 2 S t a t u s > M e t e r i n g T i m e s y n c. T i m e z o n e This setting is displayed if submodel of communication type is A-D. 79

81 Setting the metering Select "Metering" to display the "Metering" screen. / 3 M e t e r i n g D i s p l a y _ > D i s p l a y 1 P r i / S e c Enter 0 or 1 or 2 for Display. Enter 0(=Pri.) to display the primary side voltage in kilo-volts(kv). Enter 1(=Sec.) to display the secondary side voltage. Setting the time synchronization The calendar clock can run locally or be synchronised with the binary input signal or Modbus or IEC103 or SNTP. This is selected by setting as follows. Select "Time sync." to display the "Time sync" screen. / 3 T i m e s y n c. T i m e s y n c. _ > T i m e s y n c. 1 O f f / B I / M o d / / S N T P Enter 0, 1, 2, 3 or 4 and press the ENTER key. Enter 0(=off) not to be synchronised with any external signals. Enter 1(=BI) to be synchronised with the binary input signal. Enter 2(=Mod) to be synchronised with the Modbus. Enter 3(=103) to be synchronised with the IEC103. Enter 4(=SNTP) to be synchronised with the SNTP. Note: When selecting BI or Modbus, check that they are active on the "Status" screen in "Status" sub-menu. If BI is selected, the BI command trigger setting should be None because event records will become full soon. (See Section ) If it is set to an inactive BI or Modbus, the calendar clock runs locally. Setting the time zone When the calendar clock is synchronized with the SNTP time standard, it is possible to transform GMT to the local time. Select "Time zone" to display the "Time zone" screen. Enter the difference between GMT and local time. Enter numerical values to GMT (hours) and 80

82 GMTm (minutes), and press the ENTER key. / 3 T i m e z o n e. G M T _ > G M T + 0 h r s G M T m + 0 m i n Protection The GRE130 can have 2 setting groups for protection in order to accommodate changes in the operation of the power system, one setting group is assigned active. To set the protection, do the following: Select "Protection" on the "Set. (change)" screen to display the "Protection" screen. / 2 P r o t e c t i o n > C h a n g e a c t. g p. C h a n g e s e t C o p y g p. Changing the active group Select "Change act. gp." to display the "Change act. gp." screen. / 3 C h a n g e a c t. g p. A c t i v e g p. _ > A c t i v e g p. 1 Enter the group number and press the ENTER key. Changing the settings Almost all the setting items have default values that are set when the product is shipped. For the default values, see Appendix G. To change the settings, do the following: Select "Change set." to display the "Act gp.= *" screen. / 3 A c t g p. = 1 > C o m m o n G r o u p 1 G r o u p 2 81

83 Changing the Common settings Select "Common" to set the voltage input state and input imbalance monitoring and press the ENTER key. / 4 C o m m o n A P P L _ > A P P L 1 1 P P / 1 P N / 2 P P / 2 P Z 3 P N / 3 P V / 3 P P A O L E D O f f / O n <APPL> Enter 0(=1PP), 1(=1PN), 3(=2PP), 4(=2PZ), 5(=3PN), 6(=3PV) or 7(=3PP) to set the voltage input state and press the ENTER key. <AOLED> This switch is used to control the TRIP LED light when an alarm element is output. Enter 1 (=On) to illuminate the TRIP LED when an alarm element outputs, and press the ENTER key. If not, enter 0 (=Off) and press the ENTER key. Changing the Group settings Select the "Group " on the "Act gp.= *" screen to change the settings and press the ENTER key. / 4 G r o u p * > P a r a m e t e r T r i p Setting the parameter Enter the line name, the VT ratio and the fault locator as follows: Select "Parameter" on the "Group " screen to display the "Parameter" screen. / 5 P a r a m e t e r > L i n e n a m e V T r a t i o Select "Line name" to display the "Line name" screen. Enter the line name as a text string and press the END key. Select "VT ratio" to display the "VT ratio" screen. 82

84 / 6 V T r a t i o P V T _ > P V T R V T Enter the VT ratio and press the ENTER key. Setting the trip function To set the scheme switches and protection elements, do the following. Select "Trip" on the "Group " screen to display the "Trip" screen. / 5 T r i p > S c h e m e s w P r o t. e l e m e n t Setting the scheme switch Select "Scheme sw" on the "Trip" screen to display the "Scheme sw" screen. / 6 S c h e m e s w > A p p l i c a t i o n O V p r o t. U V p r o t. Z P S p r o t. N P S p r o t. F R Q p r o t. Setting the application To set the application setting, do the following. Select "Application" on the " Scheme sw" screen to display the "Application" screen. / 7 A p p l i c a t i o n S V C N T _ > S V C N T 1 A L M & B L K / A L M <SVCNT> Set the alarming and tripping block, or only alarming when a failure is detected by the automatic supervision and AC input imbalance supervision. Enter 0(=ALM&BLK, alarming and tripping block) or 1(=ALM, only alarming) and press the ENTER key. 83

85 Setting the OV protection The settings for the OV protection are as follows: Select "OV" on the "Scheme sw" screen to display the "OV" screen. / 7 O V p r o t. O V 1 E N _ > O V 1 E N 1 O f f / D T / I M D T / C O V 2 E N 1 O f f / D T / I M D T / C O V 3 E N 1 O f f / O n <OV1EN>, <OV2EN> To set the OV1 and OV2 delay type, do the following. Enter 1 (=DT) or 2 (=IDMT) or 3 (=C: configurable curve) and press the ENTER key. If disabling the OV1 or OV2, enter 0 (=Off) and press the ENTER key. <OV3EN> Enter 1 (=On) to enable the OV3, and press the ENTER key. If disabling the OV3, enter 0 (=Off) and press the ENTER key. After setting, press the END key to display the following confirmation screen. C h a n g e s e t t i n g s? E N T E R = Y C A N C E L = N Press the ENTER (= Y) key to change settings and return to the "Scheme sw" screen. Setting the UV protection The settings for the UV protection are as follows: Select "UV" on the "Scheme sw" screen to display the "UV" screen. / 7 U V p r o t. U V 1 E N _ > U V 1 E N 1 O f f / D T / I M D T / C U V 2 E N 1 O f f / D T / I M D T / C U V 3 E N 1 O f f / O n V B L K E N 1 O f f / O n 84

86 <UV1EN>, <UV2EN> To set the UV1 and UV2 delay type, do the following. Enter 1 (=DT) or 2 (=IDMT) or 3 (=C: configurable curve) and press the ENTER key. If disabling the UV1 or UV2, enter 0 (=Off) and press the ENTER key. <UV3EN> Enter 1 (=On) to enable the UV3, and press the ENTER key. If disabling the UV3, enter 0 (=Off) and press the ENTER key. After setting, press the END key to display the following confirmation screen. C h a n g e s e t t i n g s? E N T E R = Y C A N C E L = N Press the ENTER (= Y) key to change settings and return to the "Scheme sw" screen. <VBLKEN> Enter 1 (=On) to enable the UV blocking and press the ENTER key. If disabling the UV blocking, enter 0 (=Off) and press the ENTER key. Setting the ZPS Protection The settings for the ZPS protection are as follows: Select "ZPS" on the "Scheme sw" screen to display the "ZPS" screen. / 7 Z P S p r o t Z P S 1 E N _ > Z P S 1 E N 1 O f f / D T / I D M T / C Z P S 2 E N 1 O f f / D T / I D M T / C <ZPS1EN>, <ZPS2EN> To set the ZPS1 and ZPS2 time delayed type, do the following. Enter 1 (=DT) or 2 (=IDMT) or 3 (=C: configurable curve) and press the ENTER key. If disabling the ZPS1 or ZPS2, enter 0(=Off) and press the ENTER key. After setting, press the END key to display the following confirmation screen. C h a n g e s e t t i n g s? E N T E R = Y C A N C E L = N Press the ENTER (= Y) key to change settings and return to the "Scheme sw" screen. 85

87 Setting the NPS protection The settings for the NPS protection are as follows: Select "NPS" on the "Scheme sw" screen to display the "NPS" screen. / 7 N P S p r o t N P S 1 E N _ > N P S 1 E N 1 O f f / D T / I D M T / C N P S 2 E N 1 O f f / D T / I D M T / C <NPS1EN>, <NPS2EN> To set the NPS1 and NPS2 time delayed type, do the following. Enter 1 (=DT) or 2 (=IDMT) or 3 (=C: configurable curve) and press the ENTER key. If disabling the NPS1 or NPS2, enter 0(=Off) and press the ENTER key. After setting, press the END key to display the following confirmation screen. C h a n g e s e t t i n g s? E N T E R = Y C A N C E L = N Press the ENTER (= Y) key to change settings and return to the "Scheme sw" screen. Setting the FRQ protection The settings for the FRQ (over/under frequency) protection are as follows: Select "FRQ" on the "Scheme sw" screen to display the "FRQ" screen. / 7 F R Q p r o t F T 1 _ > F T 1 1 O f f / O / U / B / O O / U U D F T 1 1 O f f / R / D / B o t h L o g i c 1 L 1 / L 2 / L 3 / L 4 / L 5 F T 2 0 O f f / O / U / B / O O / U U D F T 2 0 O f f / R / D / B o t h L o g i c 2 L 1 / L 2 / L 3 / L 4 / L 5 F T

88 <FT1>,<FT2>,<FT3>,<FT4> O f f / O / U / B / O O / U U D F T 3 0 O f f / R / D / B o t h L o g i c 3 L 1 / L 2 / L 3 / L 4 / L 5 F T 4 0 O f f / O / U / B / O O / U U D F T 4 0 O f f / R / D / B o t h L o g i c 4 L 1 / L 2 / L 3 / L 4 / L 5 FT1, FT2, FT3 and FT4 select the frequency protection. Enter 0 or 1 or 2 or 3 or 4 or 5 and press the ENTER key. Enter 0 (=Off) not to use the frequency protection. Enter 1 (=O) to use the F11 element for overfrequency protection. The F12 element is not used. Enter 2 (=U) to use the F11 element for underfrequency protection. The F12 element is not used Enter 3 (=B) to use the F11 element for overfrequency protection and the F12 element for underfrequency protection. Enter 4 (=OO) to use the F11 and F12 elements for overfrequency protection. Enter 5 (=UU) to use the F11 and F12 elements for underfrequency protection. <DFT1>, <DFT2>, <DFT3>, <DFT4> DFT1, DFT2, DFT3 and DFT4 select the frequency rate-of-change protection. Enter 0 or 1 or 2 or 3 and press the ENTER key. Enter 0 (= Off) not to use the frequency rise rate nor frequency decay rate protection. Enter 1 (= R) to use only the frequency rise rate protection. Enter 2 (= D) to use only the frequency decay rate protection. Enter 3 (= Both) to use both the frequency rise rate and frequency decay rate protections. <Logic 1>, <Logic 2>, <Logic3>, <Logic 4> Logic 1, Logic 2, Logic 3 and Logic 4 select the tripping combination of the frequency protection and the frequency rate-of-change protection. Enter 0 (=L1) or 1 (=L2) or 2 (=L3) or 3 (=L4) or 4 (=L5) and press the ENTER key. Refer to Table for setting. Setting the protection elements To set the protection elements, do the following. Select "Prot. element" on the "Trip" screen to display the "Prot. element" screen. 87

89 / 6 P r o t. e l e m e n t > O V p r o t. U V p r o t. Z P S p r o t N P S p r o t F R Q p r o t Setting the OV elements Select "OV" on the "Prot. element" screen to display the "OV" screen. / 7 O V p r o t. O V 1 _ V > O V V OV1 Threshold setting. T O V S OV1 Definite time delay. T O V 1 M OV1 Inverse time multiplier setting. T O V 1 R 0. 0 s OV1 Definite time reset delay. O V 1 D P R 9 5 % OV1 DO/PU ratio O V V OV2 Threshold setting. T O V S OV2 Definite time delay. T O V 2 M OV2 Inverse time multiplier setting. T O V 2 R 0. 0 s OV2 Definite time reset delay. O V 2 D P R 9 5 % OV2 DO/PU ratio O V V OV3 Threshold setting. T O V S OV3 Definite time delay. O V 1 - k OV1 User configurable IDMT curve setting O V 1 - a ditto O V 1 - C ditto O V 2 - k OV2 User configurable IDMT curve setting O V 2 - a ditto O V 2 - c ditto Enter the numerical value and press the ENTER key. After setting, press the END key to display the following confirmation screen. C h a n g e s e t t i n g s? E N T E R = Y C A N C E L = N Press the ENTER (= Y) key to change settings and return to the "Prot. element" screen. 88

90 Setting the UV elements Select "UV" on the "Prot. element" screen to display the "UV" screen. / 7 U V p r o t. U V 1 _ V > U V V UV1 Threshold setting. T U V S UV1 Definite time delay. T U V 1 M UV1 Inverse time multiplier setting. T U V 1 R s UV1 Definite time reset delay. U V V UV2 Threshold setting. T U V S UV2 Definite time delay. T U V 2 M UV2 Inverse time multiplier setting. T U V 2 R s UV2 Definite time reset delay. U V V UV3 Threshold setting. T U V S UV3 Definite time delay. V B L K V UV Blocking threshold U V 1 - k UV1 User configurable IDMT curve setting U V 1 - a ditto U V 1 - c ditto U V 2 - k UV2 User configurable IDMT curve setting U V 2 - a ditto U V 2 - c ditto Enter the numerical value and press the ENTER key. After setting, press the END key to display the following confirmation screen. C h a n g e s e t t i n g s? E N T E R = Y C A N C E L = N Press the ENTER (= Y) key to change settings and return to the "Prot. element" screen. Setting the ZPS elements Select "ZPS" on the "Prot. element" screen to display the "ZPS" screen. / 7 Z P S p r o t Z P S 1 _ V > Z P S V ZPS1 Threshold setting. T Z P S S ZPS 1 Definite time delay. T Z P S 1 M ZPS 1 Inverse time multiplier setting. T Z P S 1 R s ZPS 1 Definite time reset delay. Z P S V ZPS 2 Threshold setting. 89

91 T Z P S S ZPS 2 Definite time delay. T Z P S 2 M ZPS 2 Inverse time multiplier setting. T Z P S 2 R s ZPS 2 Definite time reset delay. Z P S 1 - k ZPS 1 User configurable IDMT curve setting Z P S 1 - a ditto Z P S 1 - c ditto Z P S 2 - k ZPS 2 User configurable IDMT curve setting Z P S 2 - a ditto Z P S 2 - c ditto Enter the numerical value and press the ENTER key. After setting, press the END key to display the following confirmation screen. C h a n g e s e t t i n g s? E N T E R = Y C A N C E L = N Press the ENTER (= Y) key to change settings and return to the "Prot. element" screen. Setting the NPS protection elements Select "NPS" on the "Prot. element" screen to display the "NPS" screen. / 7 N P S p r o t N P S 1 _ V > N P S V NPS1 Threshold setting. T N P S S NPS 1 Definite time delay. T N P S 1 M NPS 1 Inverse time multiplier setting. T N P S 1 R s NPS 1 Definite time reset delay. N P S V NPS 2 Threshold setting. T N P S S NPS 2 Definite time delay. T N P S 2 M NPS 2 Inverse time multiplier setting. T N P S 2 R s NPS 2 Definite time reset delay. N P S 1 - k NPS 1 User configurable IDMT curve setting N P S 1 - a ditto N P S 1 - c ditto N P S 2 - k NPS 2 User configurable IDMT curve setting N P S 2 - a ditto N P S 2 - c ditto Enter the numerical value and press the ENTER key. 90

92 After setting, press the END key to display the following confirmation screen. C h a n g e s e t t i n g s? E N T E R = Y C A N C E L = N Press the ENTER (= Y) key to change settings and return to the "Prot. element" screen. Setting the FRQ elements Select "FRQ" on the "Prot. element" screen to display the "FRQ" screen. / 7 F R Q p r o t F 1 1 _ H z > F H z F11 for FRQ1 threshold setting. T F S F11 Definite time delay. F H z F12 for FRQ1 Threshold setting. T F S F12 Definite time delay. D F H z / s DF1 for FRQ1 of DFRQ1 Threshold setting. F H z F21 for FRQ2 threshold setting. T F S F21 Definite time delay. F H z F22 for FRQ2 Threshold setting. T F S F22 Definite time delay. D F H z / s DF2 for FRQ2 of DFRQ2 Threshold setting. F H z F31 for FRQ3 threshold setting. T F S F31 Definite time delay. F H z F32 for FRQ3 Threshold setting. T F S F32 Definite time delay. D F H z / s DF3 for FRQ3 of DFRQ3 Threshold setting. F H z F41 for FRQ4 threshold setting. T F S F41 Definite time delay. F H z F42 for FRQ4 Threshold setting. T F S F42 Definite time delay. D F H z / s DF4 for FRQ4 of DFRQ4 Threshold setting. Enter the numerical value and press the ENTER key. After setting, press the END key to display the following confirmation screen. C h a n g e s e t t i n g s? E N T E R = Y C A N C E L = N 91

93 Press the ENTER (= Y) key to change settings and return to the "Prot. element" screen. Setting group copy To copy the settings from one settings group and overwrite them to another group, do the following: Select "Copy gp." on the "Protection" screen to display the "Copy A to B" screen. / 3 C o p y A t o B > A _ B _ Enter the group number to be copied in line A and press the ENTER key. Enter the group number to be overwritten by the copy in line B and press the ENTER key Binary Input The logic level of binary input signals can be inverted by setting before entering the scheme logic. Inversion is used when the input contact cannot meet the requirements described in Table Select "Binary I/P" on the "Set. (change)" sub-menu to display the "Binary I/P" screen. / 2 B i n a r y I / P > B I S t a t u s B I 1 B I 2 B I 3 B I 4 B I 5 B I 6 A l a r m 1 T e x t A l a r m 2 T e x t A l a r m 3 T e x t A l a r m 4 T e x t Setting Binary Input Status The binary input nominal operating voltage can be selected in GRE130. Control voltages of 24V, 48V, 110V and 220V are supported. BI1 and BI2 can be set to one of three nominal voltages - 48 / 110 / 220V ( or 12 / 24 / 48V) BI3 to BI6 can be set to one of two nominal voltages 110 / 220V (or 24 / 48V) Note: The nominal voltage 48V (or 12V) of BI1 and BI2 is used for Trip Circuit Supervision using 2 Binary inputs. See section The threshold voltage options of V and 12-48V correspond to the dc auxiliary voltage supply rating of the relay models. To set the binary inputs threshold voltage, do the following: Select "BI Status" on the "Binary I/P" screen to display the "BI Status" screen. 92

94 / 3 B I S t a t u s B I T H R 1 > B I T H R / / B I T H R / <BITHR1> To set the threshold voltage for Binary Inputs 1 and 2, do the following. Enter 0(=48V) or 1(=110V) or 2(=220V) and press the ENTER key. <BITHR2> To set the threshold voltage for Binary Inputs 3 to 6, do the following. Enter 0(=110V) or 1(=220V) and press the ENTER key. Selection of Binary Input Select the input number (BI number) on the "Binary I/P" screen. After setting, press the ENTER key to display the "BI " screen. / 3 B I 1 > T i m e r s F u n c t i o n s Setting Alarm Text If the BI selected is used for an alarm, an alarm message can be set. Select the Alarm text and press the ENTER key to display the text input screen. _ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z a b c d e f g h i j k l m n o p q r s t u v w x y z ( ) [ _ { } * / + - < = >! $ % & : ;,. ^ ` Enter the characters (up to 22 characters) according to the text setting method. After setting, press the ENTER key to display the "BI " screen. 93

95 Setting timers Select "Timers" on the "BI" screen to display the "Timers" screen. / 4 T i m e r s B I 1 P U D _ s > B I 1 P U D s Pick-up delay setting B I 1 D O D s Drop-off delay setting Enter the numerical value and press the ENTER key. After setting, press the END key to return to the "BI " screen. Setting Functions Select "Functions" on the "BI" screen to display the "Functions" screen. / 4 F u n c t i o n B I 1 S N S _ > B I 1 S N S 0 N o r m / I n v B I 1 S G S 0 O f f / 1 / 2 O V 1 B L K 0 O f f / O n O V 2 B L K 0 O f f / O n O V 3 B L K 0 O f f / O n U V 1 B L K 0 O f f / O n U V 2 B L K 0 O f f / O n U V 3 B L K 0 O f f / O n Z P S B L K 0 O f f / O n N P S B L K 0 O f f / O n F R Q B L K 0 O f f / O n To set the Binary Input Sense, enter 0(=Normal) or 1(=Inverted) and press the ENTER key. After setting, press the END key to return to the "BI " screen. 94

96 <BI1SNS> To set the Binary Input 1 Sense, do the following. Enter 0(=Normal) or 1(=Inverted) and press the ENTER key. <BI1SGS> To set the Binary Input 1 Settings Group Select, do the following. Enter 0(=Off) or 1(=1) or 2(=2) and press the ENTER key. <Others> Enter 1(=On) to set the function and press the ENTER key. If not setting the function, enter 0(=Off) and press the ENTER key. After setting, press the END key to return to the "BI " screen Binary Output All the binary outputs of the GRE130 except the relay failure signal are user-configurable. It is possible to assign one signal or up to four ANDing or ORing signals to one output relay. Available signals are listed in Appendix C. It is also possible to attach Instantaneous or delayed or latched reset timing to these signals. Appendix G shows the factory default settings. CAUTION When having changed the binary output settings, release the latch state on the digest screen by pressing the RESET key for more than 3 seconds. To configure the binary output signals, do the following: Selection of output relay Select "Binary O/P" on the "Set. (change)" screen to display the "Binary O/P" screen. 2 B i n a r y O / P > B O 1 B O 2 B O 3 B O 4 B O 5 Available for model 412. B O 6 Available for model 412. B O 7 Available for model 412. B O 8 Available for model 412. Note: The setting is required for all the binary outputs. If any of the binary outputs are not used, enter 0 to logic gates #1 to #4 in assigning signals. 95

97 Select the output relay number (BO number) and press the ENTER key to display the "BO " screen. / 3 B O > L o g i c / R e s e t F u n c t i o n s Setting the logic gate type and timer Select "Logic/Reset" to display the "Logic/Reset" screen. / 4 L o g i c / R e s e t L o g i c _ > L o g i c 0 O R / A N D R e s e t 0 I n s / D I / D w / L a t Enter 0(=OR) or 1(=AND) to use an OR gate or AND gate and press the ENTER key. Enter 0(=Instantaneous) or 1(=Delayed) or 2(=Dwell) or 3(=Latched) to select the reset timing and press the ENTER key. Press the END key to return to the "BO " screen. Note: To release the latch state, push the [RESET] key for more than 3 seconds. Assigning signals Select "Functions" on the "BO " screen to display the "Functions" screen. / 4 F u n c t i o n s I n 1 _ > I n I n I n I n T B O s Assign signals to gates (In #1 to #4 of --- ) by entering the number corresponding to each signal referring to Appendix A. Do not assign the signal numbers 170 to 176 (signal names: "BO1 OP" to "BO8 OP"). And set the delay time of timer TBO. Note: If signals are not assigned to all the gates #1 to #6, enter 0 for the unassigned gate(s). Repeat this process for the outputs to be configured. 96

98 CAUTION The CB close control key is linked to BO1 and the CB open control key is linked to BO2, when the control function is enabled LEDs Six of the LEDs provided by the GRE130 are user-configurable. A configurable LED can be programmed to indicate an OR combination of a maximum of 4 elements, the individual status of which can be viewed on the LED screen as Virtual LEDs. The signals listed in Appendix A can be assigned to each LED as follows. CAUTION When having changed the LED settings, release the latch state on the digest screen by pressing the RESET key for more than 3 seconds. Selection of LEDs Select "LED" on the "Set. (change)" screen to display the "LED" screen. / 2 L E D > L E D V i r t u a l L E D Selection of real LEDs Select "LED" on the "/2 LED" screen to display the "/3 LED" screen. / 3 L E D > L E D 1 L E D 2 L E D 3 L E D 4 L E D 5 L E D 6 C B C L O S E D Note: The setting is required for all the LEDs. If any of the LEDs are not used, enter 0 to logic gates #1 to #4 in assigning signals. Select the LED number and press the ENTER key to display the "LED " screen. / 4 L E D > L o g i c / R e s e t F u n c t i o n s L E D C o l o r 97

99 Setting the logic gate type and reset type Select "Logic/Reset" to display the "Logic/Reset" screen. / 5 L o g i c / R e s e t L o g i c _ > L o g i c 0 O R / A N D R e s e t 0 I n s t / L a t c h Enter 0(=OR) or 1(=AND) to use an OR gate or AND gate and press the ENTER key. Enter 0(=Instantaneous) or 1(=Latched) to select the reset timing and press the ENTER key. Press the END key to return to the "LED " screen. Note: To release the latch state, push the [RESET] key for more than 3 seconds. Assigning signals Select "Functions" on the "LED " screen to display the "Functions" screen. / 5 F u n c t i o n s I n # 1 _ > I n # I n # I n # I n # Assign signals to gates (In #1 to #4 of --- ) by entering the number corresponding to each signal referring to Appendix A. Note: If signals are not assigned to all the gates #1 to #4, enter 0 for the unassigned gate(s). Press the END key to return to the "LED " screen. Repeat this process for the outputs to be configured. Setting the LED color Select "LED color" on the "LED " screen or on the "CB CLOSED" screen to display the "LED color" screen. / 5 L E D C o l o r C o l o r _ > C o l o r 0 R / G / Y 98

100 Select the LED color from red, green or yellow. Press the END key to return to the "LED " screen. Repeat this process for the LED colors to be configured. Selection of virtual LEDs Select "Virtual LED" on the "/2 LED" screen to display the "Virtual LED" screen. / 3 V i r t u a l L E D > I N D 1 I N D 2 Select the IND number and press the ENTER key to display the "IND " screen. / 4 I N D 1 > R e s e t F u n c t i o n s Setting the reset timing Select "Reset" to display the "Reset" screen. / 5 R e s e t R e s e t _ > R e s e t 0 I n s t / L a t c h Enter 0(=Instantaneous) or 1(=Latched) to select the reset timing and press the ENTER key. Press the END key to return to the "IND " screen. Note: To release the latch state, push the [RESET] key for more than 3 seconds. Assigning signals Select "Functions" on the "IND " screen to display the "Functions" screen. / 5 F n c t i o n s B I T 1 _ > B I T B I T B I T B I T B I T B I T B I T B I T

101 Assign signals to bits (1 to 8) by entering the number corresponding to each signal referring to Appendix A. Note: If signals are not assigned to all the bits 1 to 8, enter 0 for the unassigned bit(s). Press the END key to return to the "IND " screen. Repeat this process for the outputs to be configured Control The GRE130 can control the Circuit Breaker(CB) open / close by using the front panel keys. The interlock function can be used to block the Circuit Breaker(CB) close command with interlock signals from binary inputs or from a communication command. To set the control function and interlock function, do the following: Select "Control" on the "Set. (change)" screen to display the "Control" screen. / 2 C o n t r o l C o n t r o l _ > C o n t r o l 0 D i s a b l e / E n a b l e I n t e r l o c k 0 D i s a b l e / E n a b l e Enter 0(=Disable) or 1(=Enable) to select the control function to be in use or not in use and press the ENTER key. Enter 0(=Disable) or 1(=Enable) to select the interlock function to be in use or not in use and press the ENTER key. Note: When the Control function is disabled, both the "Local" LED and the "Remote" LED are not lit, and the sub-menu "Control" on the LCD is not displayed Frequency Setting of the system frequency for the GRE130 relay for 50Hz or 60Hz. To change the system frequency, do the following: Select "Frequency" on the "Set. (change)" screen to display the "Frequency" screen. / 2 F r e q u e n c y F r e q u e n c y _ > F r e q u e n c y H z / 6 0 H z Enter 0(=50Hz) or 1(=60Hz) to select the system frequency setting 50Hz or 60Hz and press the ENTER key. 100

102 CAUTION Control When having changed the system frequency settings, the GRE130 must reboot to enable the setting change. When having changed the system frequency, the frequency protection setting value must be changed for the system frequency. The sub-menu "Control" enables the Circuit Breaker(CB) control function from the front panel keys -, and L/R. Note: When the Control function is disabled, both the "Local" LED and the "Remote" LED are not lit, and the sub-menu "Control" on the LCD is not displayed Local / Remote Control The "Local/Remote" function provides for change of CB control hierarchy. Select "Control" on the "MAIN MENU" screen to display the "Control" screen. / 1 C o n t r o l > P a s s w o r d ( C t r l ) L o c a l / R e m o t e C B c l o s e / o p e n Move the cursor to "Local/Remote" on the LCD. / 1 C o n t r o l P a s s w o r d ( C t r l ) > L o c a l / R e m o t e C B c l o s e / o p e n The L/R key is enabled to change the CB control hierarchy CB close / open Control The "CB close/open" function provides CB control. Move the cursor to "CB close/open" on the LCD. / 1 C o n t r o l P a s s w o r d ( C t r l ) L o c a l / R e m o t e > C B c l o s e / o p e n The and keys are enabled to control the CB close / open. 101

103 Password For the sake of security of control password protection can be set as follows: Select "Control" on the "MAIN MENU" screen to display the "Control" screen. Select "Password" to display the "Password" screen. Enter a 4-digit number within the brackets after "Input" and press the ENTER key. C o n t r o l I n p u t [ _ ] < For confirmation, enter the same 4-digit number in the brackets after "Retype". C o n t r o l R e t y p e [ _ ] < Press the END key to display the confirmation screen. If the retyped number is different from that first entered, the following message is displayed on the bottom of the "Password" screen before returning to the upper screen. "Unmatch passwd!" Re-entry is then requested. Password trap After the password has been set, the password must be entered in order to enter the control screens. If "Control" is entered on the "MAIN MENU" screen, the password trap screen "Password" is displayed. If the password is not entered correctly, it is not possible to move to the "Control" sub-menu screens. C o n t r o l P a s s w o r d [ _ ] < Canceling or changing the password To cancel the password protection, enter "0000" in the two brackets on the "Password" screen. The "Test" screen is then displayed without having to enter a password. The password can be changed by entering a new 4-digit number on the "Password" screen in the same way as the first password setting. 102

104 If you forget the password Press the CANCEL and RESET keys together for one second on the "MAIN MENU" screen. The password protection for the GRE130 is canceled. Set the password again Testing The sub-menu "Test" provides such functions as disabling the automatic monitoring function and forced operation of binary outputs. Note: When operating the "Test" menu, the "IN SERVICE" LED is flickering. But if an alarm occurs during the test, the flickering stops. The "IN SERVICE" LED flickers only in a testing state Scheme Switch The automatic monitor function (A.M.F.) can be disabled by setting the switch [A.M.F] to "OFF". Disabling the A.M.F. inhibits trip blocking even in the event of a failure of the items that are being monitored by this function. It also prevents failures from being displayed on the "ALARM" LED and LCD described in Section No events related to A.M.F. are recorded, either. Disabling A.M.F. is useful for blocking the output of unnecessary alarms during testing. Select "Test" on the top "MAIN MENU" screen to display the "Test" screen. / 1 T e s t > P a s s w o r d ( T e s t ) S w i t c h B i n a r y O / P Select "Switch" to display the "Switch" screen. / 2 S w i t h A. M. F _ > A. M. F 1 O f f / O n U V T S T 0 O f f / O n Enter 0(=Off) to disable the A.M.F. and press the ENTER key. Enter 1(=On) for UVTST to disable the UV block when testing UV elements and press the ENTER key. Press the END key to return to the "Test" screen Binary Output Relay It is possible to forcibly operate all binary output relays for checking connections to external 103

105 devices. Forced operation can be performed on one or more binary outputs at a time. Select "Binary O/P" on the "Test" screen to display the "Binary O/P" screen. Then the LCD displays the name of the output relay. / 2 B i n a r y O / P B O 1 _ > B O 1 0 D i s a b l e / E n a b l e B O 2 0 D i s a b l e / E n a b l e B O 3 0 D i s a b l e / E n a b l e B O 4 0 D i s a b l e / E n a b l e F A I L 0 D i s a b l e / E n a b l e Enter 1(=Enable) and press the ENTER key to forcibly operate the output relays. After completing the entries, press the END key. Then the LCD displays the screen shown below. O p e r a t e? E N T E R = Y C A N C E L = N Keep pressing the ENTER key to operate the assigned output relays. Release pressing the ENTER key to reset the operation. Press the CANCEL key to return to the upper "Binary O/P" screen Password For the sake of security during testing, password protection can be set as follows: Select "Test" on the "MAIN MENU" screen to display the "Test" screen. Select "Password" to display the "Password" screen. Enter a 4-digit number within the brackets after "Input" and press the ENTER key. T e s t I n p u t [ _ ] < For confirmation, enter the same 4-digit number in the brackets after "Retype". 104

106 T e s t R e t y p e [ _ ] < Press the END key to display the confirmation screen. If the retyped number is different from that first entered, the following message is displayed on the bottom of the "Password" screen before returning to the upper screen. "Unmatch passwd!" Re-entry is then requested. Password trap After the password has been set, the password must be entered in order to enter the setting change screens. If "Test" is entered on the "MAIN MENU" screen, the password trap screen "Password" is displayed. If the password is not entered correctly, it is not possible to move to the "Test" sub-menu screens. T e s t P a s s w o r d [ _ ] < Canceling or changing the password To cancel the password protection, enter "0000" in the two brackets on the "Password" screen. The "Test" screen is then displayed without having to enter a password. The password can be changed by entering a new 4-digit number on the "Password" screen in the same way as the first password setting. If you forget the password Press the CANCEL and RESET keys together for one second on the "MAIN MENU" screen. The screen will go off, and the password protection of the GRE130 is cancelled. Set the password again. 105

107 4.3 Personal Computer Interface The relay can be operated from a personal computer using a USB port on the front panel. Using a personal computer, the following analysis and display of fault currents are available in addition to the items available on the LCD screen. Display of current waveform: Symmetrical component analysis: Harmonic analysis: Frequency analysis: Oscillograph display On arbitrary time span On arbitrary time span On arbitrary time span For details, see the separate instruction manual "PC INTERFACE RSM100". 4.4 Modbus Interface GRE130 supports the Modbus communication protocol. This protocol is mainly used when the relay communicates with a control system and is used to transfer the following measurement and status data from the relay to the control system. (For details, see Appendix L.) Measurement data: Status data: Setting data Remote CB operation: Time setting / synchronization current events, fault indications, counters, etc. Open / Close The protocol can be used via the RS-485 port on the relay rear panel. The relay supports two baud-rates 9.6kbps and 19.2kbps. These are selected by setting. See Section IEC Interface The GRE130 supports the IEC communication protocol. This protocol is mainly used when the relay communicates with a control system and is used to transfer the following measurand and status data from the relay to the control system. (For details, see Appendix N.) Measurand data: current Status data: events, fault indications, etc. The protocol can be used through the RS-485 port on the relay rear panel. The relay supports two baud-rates 9.6kbps and 19.2kbps, and supports two normalizing factors 1.2 and 2.4 for measurand. These are selected by setting. See Section The data transfer from the relay can be blocked by the setting. For the settings, see the Section IEC Communication GRE130 can also support data communication according to the IEC standard with the provision of an optional communication board. Station bus communication as specified in IEC facilitates integration of the relays within a substation control and automation system via Ethernet LAN. 106

108 Figure shows an example of a substation automation system using Ethernet-based IEC communication. or TX 4.7 Clock Function Figure IEC Communication Network The clock function (Calendar clock) is used for time-tagging for the following purposes: Event records Disturbance records Fault records The calendar clock can run locally or be synchronised with an external clock such as the binary time standard input signal or Modbus. This can be selected by setting. The clock synchronise function synchronises the relay internal clock to the binary input signal by the following method. Since the BI signal is an ON or OFF signal which cannot express year-month-day and hour-minute-second etc, synchronising is achieved by setting the number of milliseconds to zero. This method will give accurate timing if the synchronising BI signal is input every second. Synchronisation is triggered by an OFF to ON (rising edge) transition of the BI signal. When the trigger is detected, the millisecond value of the internal clock is checked, and if the value is between 0~500ms then it is rounded down. If it is between 500~999ms then it is rounded up (ie the number of seconds is incremented). n sec (n+1) sec 500ms corrected to (n+1) sec corrected to n sec t When the relays are connected with the RSM system as shown in separate volume "PC INTERFACE RSM100" and "RSM" is selected in the time synchronisation setting, the calendar clock of each relay is synchronised with the RSM clock. If the RSM clock is synchronised with an external time standard, then all the relay clocks are synchronised with the external time standard. 107

109 4.8 Special Mode The GRE130 will enter the following special mode using a specific key operation. LCD contrast adjustment mode Light check mode LCD contrast adjustment mode When the LCD is not evident or not displayed clearly, it may be that the contrast adjustment for the LCD may not be appropriate. To adjust the contrast of the LCD screen on any of the screens, do the following: Press and,at same time for 3 seconds or more to shift to the LCD contrast adjustment mode. L C D C o n t r a s t Press the or key to adjust the contrast. LCD and LED check mode To exercise the LCD and LED check, do the following. Press While pressing key for 3 seconds or more when the LCD is off. key all LEDs are lit and white dots will appear on the whole LCD screen. The colors of the configurable LEDs (LED1-6) can be chosen in the user setting color. CB CLOSED CB OPEN LOCAL REMOTE IN SERVICE TRIP ALARM User configurable LEDs (LED1-6) RELAY FAIL Release key, to finish the LCD and LED check mode. 108

110 5. Installation 5.1 Receipt of Relays When relays are received, carry out an acceptance inspection immediately. In particular, check for damage during transportation, and if any is found, contact the vendor. Always store the relays in a clean, dry environment. 5.2 Relay Mounting The relay case is designed for flush mounting using two mounting attachment kits. Appendix E shows the case outlines Fig Outline of attachment kit The attachment kits can be mounted on a panel thickness of 1 2.5mm when the M4x8 screws included with the kit are used. When mounted on a panel thickness of mm, M4x10 screws together with some spacing washers should be used Flush Mounting For flush mounting in a panel cut-out; Mount the case in the panel cut-out from the front of the panel. ; See Fig Use the mounting attachment kits set ; See Fig Tighten the M4 screws from the attachment kits ; see Fig The allowed range for the fixing screw tightening torque is Nm. Do not tighten the screws too tightly. 109

111 (a) model 410A and 411A (b) model 412A Fig Flush mounting the case into a panel cut-out 110

112 Fig Side view of GRE130 showing the positions of the mounting attachment kit (a) model 410A, 411A (b) model 412A Fig Rear view of GRE130 showing the screw location for the mounting attachment kits Dimensions Power Supply The power supply for the relay can be either DC (range 24-48Vdc, Vdc, Vdc) or AC ( Vac-50/60Hz). The voltage range is specified on the relay indicator plate on the front face. On models 410A and 411A, the power supply should be connected to terminals 13 and 14 of TB1 and the earthing should be connected to terminal 12 of TB1. On model 412A, the power supply should be connected to terminals 13 and 14 of TB2 and the 111

113 earthing should be connected to terminal 12 of TB2. A minimum 1.25mm 2 wire size recommended Analogue inputs GRE A, 411A and 412A have 4 analogue inputs for phase and earth voltage. On models 410A and 411A, the voltage inputs should be connected to terminals 1 to 8 of TB1. A minimum 2.5 mm 2 wire size recommended. The voltage input and power supply terminals (TB1 or TB2) can be connected from both sides Binary inputs The relay has 2 (or 6) opto-insulated logic inputs. Each input has is separately powered with a dc voltage. On models 410A and 411A, the binary inputs should be connected to terminals 13 to 16 (or 22) of TB2. On model 412A, the binary inputs should be connected to terminals 13 to 16 (or 22) of TB3. A minimum 1.25 mm 2 wire size is recommended Binary outputs (Output relays) Five output relays are available on the relay. Four relays are programmable, the last relay being assigned to the signaling of a relay fault. BO3 and BO4 are NOT applicable for direct CB coil connection. On models 410A and 411A, the binary outputs should be connected to terminals 1 to 10 of TB2. On model 412A, the binary outputs should be connected to terminals 1 to 10 of TB3. A minimum 1.25 mm 2 wire size is recommended RS485 port The communication connection (RS485 port) is assigned to terminals 21, 23 and 24 of TB2 at model 410A and 411A or TB3 at model 412A. The total length of twisted pair wires should not exceed 1200 m. The transmission wires should be terminated using a 120Ω resistor at both extreme ends of the cable. The binary input, binary output and RS485 communication terminal is a single side connected terminal block. The relay terminal block size and the clearance between the terminals are shown at Fig

114 TB2 TB1 TB3 TB2 TB (a) model 410A1 and 411A (b) model 412A Fig Rear view of the relay 5.3 Electrostatic Discharge CAUTION Do not remove the relay PCB from the relay case since electronic components on the modules are very sensitive to electrostatic discharge. 5.4 Handling Precautions A person's normal movements can easily generate electrostatic potentials of several thousand volts. Discharge of these voltages into semiconductor devices when handling electronic circuits can cause serious damage. Often, this damage may not be immediately apparent, but the reliability of the circuit will have been reduced. The electronic circuits are completely safe from electrostatic discharge when housed in the case. Do not expose them to risk of damage. The relay unit incorporates the highest practical protection for its semiconductor devices. However, if it becomes necessary to withdraw the relay unit, precautions should be taken to preserve the high reliability and long life for which the equipment has been designed and manufactured. CAUTION Do not pass the relay unit to another person without first ensuring you are both at the same electrostatic potential. Shaking hands achieves equipotential. Place the relay unit on an anti-static surface, or on a conducting surface which is at the same potential as yourself. Do not place the relay unit in polystyrene trays. It is strongly recommended that detailed investigations on electronic circuitry should be carried out in a Special Handling Area. 113

115 5.5 External Connections External connections for each relay model are shown in Appendix F. 5.6 Optinal case model S1-GRE130 GRE130 has optional case model S1-GRE130. Details are shown in 6F2T

116 6. Commissioning and Maintenance 6.1 Outline of Commissioning Tests 6.2 Cautions The GRE130 is fully numerical and the hardware is continuously monitored. Commissioning tests can be kept to a minimum and need only include hardware tests and the conjunctive tests. The function tests are at the user s discretion. In these tests, user interfaces on the front panel of the relay or local PC can be fully utilised. Test personnel must be familiar with general relay testing practices and safety precautions to avoid personal injuries or equipment damage. Hardware tests These tests are performed for the following hardware to ensure that there is no hardware defect. Defects of hardware circuits other than the following can be detected by monitoring which circuits function when the DC power is supplied. User interfaces Binary input circuits and output circuits AC input circuits Function tests These tests are performed for the following functions that are fully software-based. Measuring elements Metering and recording Conjunctive tests The tests are performed after the relay is connected with the primary equipment and other external equipment. The following tests are included: On load test: phase sequence check and polarity check Tripping circuit test Safety Precautions CAUTION When connecting the cable to the rear of the relay, firmly fix it to the terminal block and attach the cover provided for the terminal block. Before checking the interior of the relay, be sure to turn off the power. Failure to observe any of the precautions above may cause electric shock or malfunction. 115

117 6.2.2 Precautions for Testing CAUTION 6.3 Preparations When the power is on, do not draw out/insert the relay unit. Before turning the power on, check the following: - Make sure the polarity and voltage of the power supply are correct. - Make sure the VT circuit is not short-circuited. Be careful to ensure that the relay is not damaged due to an overcurrent or overvoltage. If settings are changed for testing, remember to reset them to the original settings. Failure to observe any of the precautions above may cause damage or malfunction of the relay. Test equipment The following test equipment is required for the commissioning tests. 1 Single-phase voltage source 1 Three-phase voltage source 1 power supply 3 Phase angle meter 3 AC ammeter 3 AC voltmeter 1 Time counter, precision timer 1 PC (not essential) Relay settings Before starting the tests, it must be specified whether the tests will use the user s settings or the default settings. For the default settings, see the Appendix G Relay Setting Sheet. Visual inspection After unpacking the product, check for any damage to the relay case. If there is any damage, the internal module might also have been affected. Contact the vendor. Relay ratings Check that the items described on the nameplate on the front of the relay conform to the user s specification. The items are: relay type and model, AC voltage and frequency ratings, and auxiliary supply voltage rating. Local PC When using a local PC, connect it to the relay via the USB port on the front of the relay. RSM100 software is required to run the PC. For full details, see separate volume "PC INTERFACE RSM100". 116

118 6.4 Hardware Tests The tests can be performed without external wiring, but a power supply and AC current and voltage sources are required. The testing circuit figures used in this chapter show the circuit diagram for the 410A and 411A models. In the case of the 412A model, TB1 replaces TB2 and TB2 replaces TB User Interfaces This test ensures that the LCD, LEDs and keys function correctly. LCD LED display Apply the rated supply voltage and check that the LCD is off and the "IN SERVICE" LED is lit green. Note: If there is a failure, the LCD will display the "ERR: " screen when the supply voltage is applied. Press key for 3 seconds or longer and check that white dots appear on the whole screen and that all LEDs are lit. Operation keys Press the ENTER key when the LCD is off and check that the LCD displays the "MAIN MENU" screen. Press the END key to turn off the LCD. Press the ENTER key when the LCD is off and check that the LCD displays the "MAIN MENU" screen. Press any keys to check that they operate Binary Input Circuits The testing circuit is shown in Figure GRE130 power supply + TB 2 TB BI1 BI2 BI3 BI4 BI5 BI6-12 Figure Testing Binary Input Circuit 117

119 Display the "Binary I/O" screen from the "Status" sub-menu. / 2 B i n a r y I / O I P [ ] O P [ ] Apply the rated supply voltage to terminals 13-14, 15-16, 17,18,19,20-21 of terminal block TB2. Check that the status display corresponding to the input signal (IP) changes from 0 to 1. (For details of the binary input status display, see Section ) The user will be able to perform this test from one terminal to another or for all the terminals at once Binary Output Circuits This test can be performed by using the "Test" sub-menu and forcibly operating the relay drivers and output relays. Operation of the output contacts is monitored at the output terminal. The output contact and corresponding terminal number are shown in Appendix G. Select "Binary O/P" on the "Test" screen to display the "Binary O/P" screen. The LCD displays the name of the output relay. / 2 B i n a r y O / P B O 1 _ > B O 1 0 D i s a b l e / E n a b l e B O 2 0 D i s a b l e / E n a b l e B O 3 0 D i s a b l e / E n a b l e B O 4 0 D i s a b l e / E n a b l e F A I L 0 D i s a b l e / E n a b l e Enter 1 and press the ENTER key. After completing the entries, press the END key. The LCD will display the screen shown below. If 1 is entered for all the output relays, the following forcible operation can be performed collectively. 118

120 O p e r a t e? E N T E R = Y C A N C E L = N Keep pressing the ENTER key to operate the output relays forcibly. Check that the output contacts operate at the terminal. Stop pressing the ENTER key to reset the operation AC Input Circuits This test can be performed by applying check currents to the AC input circuits and verifying that the values applied coincide with the values displayed on the LCD screen. The testing circuit is shown in Figure V TB1-1 GRE130 V A Three-phase voltage source V B -5 V C -6 Single-phase voltage source V power supply + TB Figure Testing AC Input Circuit To check the metering data on the "Metering" screen, do the following. "Set. (view)" sub-menu "Status" screen "Metering" screen If the setting is 0 ( = Primary), change the setting to 1 (Secondary) in the "Set. (change)" sub-menu. "Set. (change)" sub-menu "Status" screen "Metering" screen Remember to reset it to the initial setting after the test is finished. Open the "Metering" screen in the "Status" sub-menu. "Status" sub-menu "Metering" screen Apply AC currents and check that the displayed values are within ±5% of the input values. 119

121 6.5 Function Test CAUTION The function test may cause the output relays to operate including the tripping output relays. Therefore, the test must be performed with tripping circuits disconnected Measuring Element Measuring element characteristics are realized using software, so it is possible to verify the overall characteristics by checking representative points. Operation of the element under test is observed by assigning the signal number to a configurable LED or a binary output relay. Note: The voltage level at the monitoring jacks is +5V for logic level "1" and less than 0.1V for logic level "0". CAUTION Use test equipment with more than 1 kω of internal impedance when observing the output signal at the monitoring jacks. Do not apply an external voltage to the monitoring jacks. Do not leave the A or B terminal shorted to 0V terminal for a long time. In the case of a three-phase element, it is sufficient to test for a representative phase. The A-phase element is selected hereafter. Further, the [APPLCT] settings are selected 3P and 3PV. Note: The operating time test for the relay measuring elements at monitoring jacks A or B does not include operation of the binary output. An overall operating time test, if required, should be measured at a binary output relay. Assigning signals to LEDs Select "LED" on the "Set. (change)" screen to display the "2/ LED" screen. / 2 L E D > L E D V i r t u a l L E D Select "LED" on the "/2 LED" screen to display the "/3 LED" screen. / 3 L E D > L E D 1 L E D 2 L E D 3 L E D 4 L E D 5 L E D 6 C B C L O S E D Note: The setting is required for all of the LEDs. If any of the LEDs are not used, enter 0 to logic gates #1 to #4 in assigning signals. 120

122 Select the LED number and press the ENTER key to display the "LED " screen. / 4 L E D > L o g i c / R e s e t F u n c t i o n s L E D C o l o r Select "Logic/Reset" to display the "Logic/Reset" screen. / 5 L o g i c / R e s e t L o g i c _ > L o g i c 0 O R / A N D R e s e t 0 I n s t / L a t c h Enter 0 (= OR) and press the ENTER key. Enter 0 (= Instantaneous) and press the ENTER key. Press the END key to return to the "LED " screen. Select "Functions" on the "LED " screen to display the "Functions" screen. / 5 F u n c t i o n s I n 1 _ > I n 1 _ I n 2 _ I n 3 _ I n 4 _ Assign the gate In #1 the number corresponding to the testing element referring to Appendix B, and assign other gates to 0. Assigning signals to Binary Output Relays Select "Binary O/P" on the "Set. (change)" screen to display the "Binary O/P" screen. / 2 B i n a r y O / P > B O 1 B O 2 B O 3 B O 4 121

123 Note: The setting is required for all of the binary outputs. If any of the binary outputs are not used, enter 0 to logic gates In #1 to #4 in assigning signals. Select the output relay number (BO number) and press the ENTER key to display the "BO " screen. / 3 B O > L o g i c / R e s e t F u n c t i o n s Select "Logic/Reset" to display the "Logic/Reset" screen. / 4 L o g i c / R e s e t L o g i c _ > L o g i c 0 O R / A N D R e s e t 0 I n s / D l / D w / L a t Enter 0 (= OR) and press the ENTER key. Enter 0 (= Instantaneous) and press the ENTER key. Press the END key to return to the "BO " screen. Select "Functions" on the "BO " screen to display the "Functions" screen. / 4 F u n c t i o n s I n 1 _ > I n 1 _ I n 2 _ I n 3 _ I n 4 _ T B O s Assign the gate In #1 the number corresponding to the testing element referring to Appendix A and assign other gates to

124 Overvoltage and undervoltage elements The testing circuit is shown in Figure GRE130 + Variable- Voltage source V TB power supply + TB ( ) :Connect the terminal number corresponding to the testing element. Refer to Table Figure Operating Value Test Circuit Overvoltage and undervoltage elements and their output signal numbers are listed below. Element Signal No. Element Signal No. OV1 101 UV1 122 OV2 108 UV2 126 OV3 115 UV3 130 ZPS1 134 ZPS2 135 Enter the signal number to observe the operation at the LED as shown in Section and press the ENTER key. Apply a test voltage and change the magnitude of the voltage applied and measure the value at which the element operates. Check that the measured value is within 5% of the setting value. Operating value test of OV1, OV2, OV3, ZPS1, ZPS2 Apply rated voltage as shown in Figure Increase the voltage and measure the value at which the element operates. Check that the measured value is within ± 5% of the setting. Operating value test of UV1, UV2, UV3 Apply rated voltage and frequency as shown Figure Decrease the voltage and measure the value at which the element operates. Check that the measured value is within ± 5% of the setting. Operating time check of OV1, UV1, ZPS1 IDMT curves Change the voltage from the rated voltage to the test voltage quickly and measure the operating time. Calculate the theoretical operating time using the characteristic equations shown in Section and Check the measured operating time. 123

125 Negative sequence overvoltage element NPS1 and NPS2 The testing circuit is shown in Figure Va V TB1-1 GRE130 Three-phase Voltage source Vb Vc V N power supply + TB Figure Testing NOV elements The output signal numbers of the elements are as follows: Element Signal No. NPS1 136 NPS2 137 Apply a three-phase balanced voltage and the check the value of the operating voltage by increasing the magnitude of the voltage applied. Check that the measured value is within 5% of the setting value. Operating time check of NPS1 IDMT curve Change the voltage from the rated voltage to the test voltage quickly and measure the operating time. Calculate the theoretical operating time using the characteristic equations shown in Section Check the measured operating time. 124

126 Frequency Elements The testing circuit is shown in Figure Variable- Frequency / Voltage source V f TB GRE130 power supply + TB Figure Operating Value Test Circuit Frequency elements and their output signal numbers are listed below. Element FRQ1 FRQ2 FRQ3 FRQ4 FVBLK Signal No Overfrequency or underfrequency elements FRQ1 to FRQ4 Note: Each element characteristic, overfrequency or underfrequency, is determined by the scheme switch [FT1] to [FT4] settings. Check the scheme switch setting and characteristic of each element before testing. Apply rated voltage and frequency as shown in Figure For the overfrequency characteristic, Increase the frequency and measure the value at which the element operates. Check that the measured value is within ± 0.005Hz of the setting. For the underfrequency characteristics, Decrease the frequency and measure the value at which the element operates. Check that the measured value is within ± 0.005Hz of the setting. Undervoltage block test, FVBLK Apply rated voltage and change the magnitude of the frequency to operate an element. Maintain the frequency at which the element is operating, and change the magnitude of the voltage applied from the rated voltage to less than the FVBLK setting voltage. And then, check that the element resets Protection Scheme In the protection scheme tests, a dynamic test set is required to simulate power system pre-fault, fault and post-fault conditions. Tripping is observed with the tripping command output relays operate after a simulated fault occurs. 125

127 6.5.3 Metering and Recording The metering function can be checked while testing the AC input circuit. See Section Fault recording can be checked while testing the protection schemes. Open the "Fault record" screen and check that the descriptions are correct for the fault concerned. Recording events are listed in Appendix B. There are internal events and external events from binary input commands. Event recording from an external event can be checked by changing the status of binary input command signals. Change the status in the same way as the binary input circuit test (see Section 6.4.2) and check that the description displayed on the "Event record" screen is correct. Some of the internal events can be checked in the protection scheme tests. Disturbance recording can be checked while testing the protection schemes. The LCD display only shows the date and time when a disturbance is recorded. Open the "Disturbance record" screen and check that the descriptions are correct. Details can be displayed on a PC. Check that the descriptions on the PC are correct. For details on how to obtain disturbance records on the PC, see the RSM100 Manual. 6.6 Conjunctive Tests On Load Test To check the polarity of the current and voltage transformers, check the load current, system voltage and their respective phase angles using the metering displays on the LCD screen. Open the "Auto-supervision" screen and check that no message appears. Open the following "Metering" screen from the "Status" sub-menu to check the above. / 2 M e t e r i n g V a * *. * * k V V b * *. * * k V V c * *. * * k V V e s * *. * * k V V a b * *. * * k V V b c * *. * * k V V c a * *. * * k V V 1 * * *. * k V V 2 * * *. * k V V 0 * *. * * k V f * *. * * H z Note: The magnitude of current can be set in values for either the primary side or the secondary side by a setting. (The default setting is the secondary side.) Tripping Circuit Test The tripping circuit, including the circuit breaker, is checked by forcibly operating the output relay and monitoring the circuit breaker to confirm that it has tripped. Forcible operation of the output relay is performed on the "Binary O/P " screen of the "Test" sub-menu as described in Section

128 Tripping circuit Set the breaker to be closed. Select "Binary O/P" on the "Test" sub-menu screen to display the "Binary O/P" screen. / 2 B i n a r y O / P B O 1 _ > B O 1 0 D i s a b l e / E n a b l e B O 2 0 D i s a b l e / E n a b l e B O 3 0 D i s a b l e / E n a b l e B O 4 0 D i s a b l e / E n a b l e F A I L 0 D i s a b l e / E n a b l e BO1 to BO4 are output relays with one normally open contact. Enter 1 for BO2 and press the ENTER key. Press the END key. Then the LCD will display the screen shown below. O p e r a t e? E N T E R = Y C A N C E L = N Keep pressing the ENTER key to operate the output relay BO2 and check that the A-phase breaker is tripped. Stop pressing the ENTER key to reset the operation. Repeat the above for BO1, BO3 and BO4. 127

129 6.7 Maintenance Regular Testing The relay is almost completely self-supervised. The circuits that can not be supervised are binary input and output circuits and human interfaces. Therefore, regular testing is minimised to checking the unsupervised circuits. The test procedures are the same as described in Sections 6.4.1, and Failure Tracing and Repair Failures will be detected by automatic supervision or regular testing. When a failure is detected by supervision, a remote alarm is issued from the binary output FAIL relay and the failure is indicated on the front panel by the LED indicators or LCD display. It is also recorded in the event record. Failures detected by supervision are traced by checking the "Err: " screen on the LCD. Table shows LCD messages and failure locations. The locations marked with (1) have a higher probability than locations marked with (2). Table LCD Message and Failure Location Message Err: SUM Err: RAM Err: BRAM Err: EEP Err: A/D Failure location Relay Unit AC cable CB or Cable (Flash memory) (SRAM) (Backup RAM) (EEPROM) (A/D converter) Err: V0, Err: V2 (AC input circuit)(1) (2) Err: DRIVER (BI,BO circuit)(1) (2) ( ): Probable failure location in the relay unit including its peripheral circuits. * ; Error level set in VT supervision function. Alarms detected by the relay self-supervision are traced by checking the "ALM: " screen on the LCD. Table shows LCD messages and alarm locations. Table LCD Message and Alarm Location Message Failure location Relay Unit AC cable CB or Cable ALM: VT (AC input circuit)(1) (2) ALM: TC (Trip circuit)(1) (2) ALM: CB (Circuit breaker)(1) (2) ALM: TP COUNT (Trip count)(1) (2) ( ): Probable failure location in the relay unit including peripheral circuits. 128

130 If there is no message is shown on the LCD it means that the failure location is either in the power supply circuit or in the microprocessors. If the "ALARM" LED is off, the failure is in the power supply circuit. If the LED is lit, the failure is in the microprocessors. Replace the relay unit in both cases after checking if the correct voltage is applied to the relay. If a failure is detected by the automatic supervision function or regular testing, replace the failed relay unit. Note: When a failure or an abnormality is detected during a regular test, confirm the following first: - Test circuit connections are correct. - Correct power voltage is applied. - Correct AC inputs are applied. - Test procedures comply with those stated in the manual Replacing Failed Relay Unit If the failure is identified to be in the relay and the user has a spare relay, the user can recover the protection by replacing the relay. Repairs at site should be limited to relay replacement. Maintenance at component level is not recommended. Check that the replacement relay unit has an identical Model Number and relay version (software type form) as the relay to be replaced. The Model Number is indicated on the front of the relay. For the relay version, see Section Replacing the relay unit CAUTION After replacing the relay unit, check the settings. The procedure for relay withdrawal and insertion is as follows: Switch off the DC power supply. WARNING Hazardous voltage may remain in the DC circuit when the power supply is de-energized. It will take approximately 30 seconds for the voltage to discharge. Remove the terminal blocks from the relay leaving the wiring in place. To remove the relay unit from the panel, the attachment screws must be removed. Insert the (spare) relay unit following the reverse procedure. CAUTION To avoid risk of damage: When the attachment kits are removed, support the relay to ensure that it does not fall from panel. Ensure that the relay front cover panel is closed throughout the operation Resumption of Service After replacing the failed relay unit or repairing failed external circuits, take the following procedures to restore the relay to the service. Switch on the power supply and confirm that the "IN SERVICE" green LED is lit and the "ALARM" red LED is not lit. Connect the AC inputs and reconnect the trip outputs Storage The spare relay should be stored in a dry and clean room. Based on IEC Standard the storage temperature should be 25 C to +70 C, but the temperature of 0 C to +40 C is recommended for long-term storage. 129

131 7. Putting Relay into Service The following procedure must be adhered to when putting the relay into service after finishing the commissioning tests or maintenance tests. Check that all the external connections are correct. Check the settings of all measuring elements, timers, scheme switches, recordings and clock are correct. In particular, when settings are changed temporarily for testing, be sure to restore them. Clear any unnecessary records on faults, alarms, events, disturbances and counters which are recorded during the tests. Press key and check that no failure message is displayed on the "Auto-supervision" screen. Check that the green "IN SERVICE" LED is lit and no other LEDs are lit on the front panel. 130

132 Appendix A Signal List 131

133 No. SIGNAL Name Contents 0 Not in use 1 BI1 COMAND Binary Input signal of BI1 2 BI2 COMAND Binary Input signal of BI2 3 BI3 COMAND Binary Input signal of BI3 4 BI4 COMAND Binary Input signal of BI4 5 BI5 COMAND Binary Input signal of BI5 6 BI6 COMAND Binary Input signal of BI6 7 Not in use 8 Not in use 9 CONSTANT_0 Constant 0 10 CONSTANT_1 Constant 1 11 SET. GROUP1 BI command of change active setting group1 12 SET. GROUP2 BI command of change active setting group2 13 Not in use 14 Not in use 15 OV1 BLOCK BI command of OV1 protection scheme block 16 OV2 BLOCK BI command of OV2 protection scheme block 17 OV3 BLOCK BI command of OV3 protection scheme block 18 UV1 BLOCK BI command of UV1 protection scheme block 19 UV2 BLOCK BI command of UV2 protection scheme block 20 UV3 BLOCK BI command of UV3 protection scheme block 21 ZPS1 BLOCK BI command of ZPS1 protection scheme block 22 ZPS2 BLOCK BI command of ZPS2 protection scheme block 23 NPS1 BLOCK BI command of NPS1 protection scheme block 24 NPS2 BLOCK BI command of NPS2 protection scheme block 25 TC FAIL BI command of Trip circuit Fail Alarm 26 CB CONT OPN BI command of CB N/O contact 27 CB CONT CLS BI command of CB N/C contact 28 EXT TRIP-3PH BI command of External trip (3 Phase) 29 EXT TRIP-APH BI command of External trip (A Phase) 30 EXT TRIP-BPH BI command of External trip (B Phase) 31 EXT TRIP-CPH BI command of External trip (C Phase) 32 REMOTE RESET BI command of Remote reset 33 SYNC CLOCK BI command of Synchronize Clock 34 STORE RECORD BI command of Store Disturbance Record 35 ALARM1 BI command of Alarm1 36 ALARM2 BI command of Alarm2 37 ALARM3 BI command of Alarm3 38 ALARM4 BI command of Alarm4 39 Not in use 40 Not in use 132

134 No. SIGNAL Name Contents 41 Not in use 42 FRQ1 BLOCK BI command of FRQ1 protection scheme block 43 FRQ2 BLOCK BI command of FRQ2 protection scheme block 44 FRQ3 BLOCK BI command of FRQ3 protection scheme block 45 FRQ4 BLOCK BI command of FRQ4 protection scheme block 46 Not in use 47 Not in use 48 Not in use 49 Not in use 50 OV1_INST-OR OV1 element start at IDMT setting. 51 OV1-A INST OV1-A relay element start at IDMT setting. 52 OV1-B INST OV1-B relay element start at IDMT setting. 53 OV1-C INST OV1-C relay element start at IDMT setting. 54 Not in use 55 Not in use 56 OV2_INST-OR OV2 element start at IDMT setting.. 57 OV2-A INST OV2-A relay element start at IDMT setting. 58 OV2-B INST OV2-B relay element start at IDMT setting. 59 OV2-C INST OV2-C relay element start at IDMT setting. 60 Not in use 61 Not in use 62 Not in use 63 OV1-A OV1-A relay element output 64 OV1-B OV1-B relay element output 65 OV1-C OV1-C relay element output 66 OV2-A OV2-A relay element output 67 OV2-B OV2-B relay element output 68 OV2-C OV2-C relay element output 69 OV3-A OV3-A relay element output 70 OV3-B OV3-B relay element output 71 OV3-C OV3-C relay element output 72 UV1-A UV1-A relay element output 73 UV1-B UV1-B relay element output 74 UV1-C UV1-C relay element output 75 UV2-A UV2-A relay element output 76 UV2-B UV2-B relay element output 77 UV2-C UV2-C relay element output 78 UV3-A UV3-A relay element output 79 UV3-B UV3-B relay element output 80 UV3-C UV3-C relay element output 81 OV1-OR OV1 element start at DT settings. 82 OV1-A pick up OV1-A relay element start at DT settings. 83 OV1-B pick up OV1-B relay element start at DT settings. 84 OV1-C pick up OV1-C relay element start at DT settings. 133

135 No. SIGNAL Name Contents 85 OV2-OR OV2 element start at DT settings. 86 OV2-A pick up OV2-A relay element start at DT settings. 87 OV2-B pick up OV2-B relay element start at DT settings. 88 OV2-C pick up OV2-C relay element start at DT settings. 89 OV3-OR OV3 element start at DT settings. 90 Not in use 91 Not in use 92 Not in use 93 ZPS1 ZPS1 relay element output 94 ZPS2 ZPS2 relay element output 95 NPS1 NPS1 relay element output 96 NPS2 NPS2 relay element output 97 UVBLK UV protection scheme block 98 Not in use 99 Not in use 100 Not in use 101 OV1 TRIP OV1 trip command 102 OV1-A TRIP OV1 trip command (A Phase) 103 OV1-B TRIP OV1 trip command (B Phase) 104 OV1-C TRIP OV1 trip command (C Phase) 105 Not in use 106 Not in use 107 Not in use 108 OV2 TRIP OV2 trip command 109 OV2-A TRIP OV2 trip command (A Phase) 110 OV2-B TRIP OV2 trip command (B Phase) 111 OV2-C TRIP OV2 trip command (C Phase) 112 Not in use 113 Not in use 114 Not in use 115 OV3 TRIP OV3 trip command 116 OV3-A TRIP OV3 trip command (A Phase) 117 OV3-B TRIP OV3 trip command (B Phase) 118 OV3-C TRIP OV3 trip command (C Phase) 119 Not in use 120 Not in use 121 FV BLOCK FRQ protection scheme block by UV element 122 UV1 TRIP UV1 trip command 123 UV1-A TRIP UV1 trip command (A Phase) 124 UV1-B TRIP UV1 trip command (B Phase) 125 UV1-C TRIP UV1 trip command (C Phase) 126 UV2 TRIP UV2 trip command 127 UV2-A TRIP UV2 trip command (A Phase) 128 UV2-B TRIP UV2 trip command (B Phase) 129 UV2-C TRIP UV2 trip command (C Phase) 134

136 No. SIGNAL Name Contents 130 UV3 TRIP UV3 trip command 131 UV3-A TRIP UV3 trip command (A Phase) 132 UV3-B TRIP UV3 trip command (B Phase) 133 UV3-C TRIP UV3 trip command (C Phase) 134 ZPS1 TRIP ZPS1 trip command 135 ZPS2 ALARM ZPS2 alarm command 136 NPS1 TRIP NPS1 trip command 137 NPS2 ALARM NPS2 alarm command 138 Not in use 139 Not in use 140 Not in use 141 GEN.TRIP General Trip command 142 GEN.TRIP-A General Trip command (A Phase) 143 GEN.TRIP-B General Trip command (B Phase) 144 GEN.TRIP-C General Trip command (C Phase) 145 Not in use 146 Not in use 147 Not in use 148 Not in use 149 Not in use 150 GEN.ALARM General alarm command 151 ZPS1 pick-up ZPS1 element start at DT setting. 152 ZPS2 pick-up ZPS2 element start at DT setting. 153 NPS1 pick-up NPS1 element start at DT setting. 154 NPS2 pick-up NPS2 element start at DT setting. 155 UV1 INST-OR UV1 relay element start at IDMT setting 156 UV2 INST-OR UV2 relay element start at IDMT setting 157 UV1-A INST UV1-A relay element start at IDMT setting 158 UV1-B INST UV1-B relay element start at IDMT setting 159 UV1-C INST UV1-C relay element start at IDMT setting 160 A.M.F.OFF Automatic monitoring function off 161 RELAY FAIL Relay failure & trip blocked alarm 162 RELAY FAIL-A Relay failure alarm (Trip not blocked) 163 TCSV Trip circuit supervision failure 164 CBSV Circuit breaker status monitoring failure 165 TC ALARM Trip counter alarm 166 Not in use 167 Not in use 168 V0 ERR V0 error 169 V2 ERR V2 error 170 BO1OP Binary Output1 operated 171 BO2OP Binary Output2 operated 172 BO3OP Binary Output3 operated 173 BO4OP Binary Output4 operated 135

137 No. SIGNAL Name Contents 174 Not in use 175 Not in use 176 Not in use 177 UV2-A INST UV2-A relay element start at IDMT setting. 178 UV2-B INST UV2-B relay element start at IDMT setting. 179 UV2-C INST UV2-C relay element start at IDMT setting. 180 Not in use 181 LCD IND. LCD indication (Virtual LED) command 182 LCD IND1. LCD indication1 (Virtual LED) command 183 LCD IND2. LCD indication2 (Virtual LED) command 184 Not in use 185 Not in use 186 TESTING Testing LED lit output 187 Not in use 188 Not in use 189 Not in use 190 GEN PICKUP General start / pick-up output 191 NORM LED ON In service LED ON 192 TRIP LED ON TRIP LED ON 193 PROT COM ON IEC protection command 194 IECTST IEC communication test 195 IECBLK IEC communication block 196 Not in use 197 ZPS1 INST ZPS1 relay element start at IDMT setting 198 ZPS2 INST ZPS2 relay element start at IDMT setting 199 NPS1 INST NPS1 relay element start at IDMT setting 200 NPS2 INST NPS2 relay element start at IDMT setting 201 BI1 COMMAND1 Binary Input signal of BI1 after BI1SNS 202 BI2 COMMAND1 Binary Input signal of BI2 after BI2SNS 203 BI3 COMMAND1 Binary Input signal of BI3 after BI3SNS 204 BI4 COMMAND1 Binary Input signal of BI4 after BI4SNS 205 BI5 COMMAND1 Binary Input signal of BI5 after BI5SNS 206 BI6 COMMAND1 Binary Input signal of BI6 after BI6SNS 207 BO5OP Binary Output5 operated 208 BO6OP Binary Output6 operated 209 BO7OP Binary Output7 operated 210 BO8OP Binary Output8 operated 211 F11 FRQ1 relay F11 element output 212 F12 FRQ1 relay F12 element output 213 DF-R1 DFRQ1 relay rise element output 214 DF-D1 DFRQ1 relay decay element output 215 F21 FRQ2 relay F21 element output 216 F22 FRQ2 relay F22 element output 217 DF-R2 DFRQ2 relay rise element output 136

138 No. SIGNAL Name Contents 218 DF-D2 DFRQ2 relay decay element output 219 F31 FRQ3 relay F31 element output 220 F32 FRQ3 relay F32 element output 221 DF-R3 DFRQ3 relay rise element output 222 DR-D3 DFRQ3 relay decay element output 223 F41 FRQ4 relay F41 element output 224 F42 FRQ4 relay F42 element output 225 DF-R4 DFRQ4 relay rise element output 226 DF-D4 DFRQ4 relay decay element output 227 Not in use 228 Not in use 229 Not in use 230 Not in use 231 F11 TRIP FRQ1 relay F11 Trip command 232 F12 TRIP FRQ1 relay F12 Trip command 233 DF-R1 TRIP DFRQ1 relay rise Trip command 234 DF-D1 TRIP DFRQ1 relay decay Trip command 235 FRQ1 TRIP FRQ1 relay Trip command 236 F21 TRIP FRQ2 relay F21 Trip command 237 F22 TRIP FRQ2 relay F22 Trip command 238 DF-R2 TRIP DFRQ2 relay rise Trip command 239 DF-D2 TRIP DFRQ2 relay decay Trip command 240 FRQ2 TRIP FRQ2 relay Trip command 241 F31 TRIP FRQ3 relay F31 Trip command 242 F32 TRIP FRQ3 relay F32 Trip command 243 DF-R3 TRIP DFRQ3 relay rise Trip command 244 DF-D3 TRIP DFRQ3 relay decay Trip command 245 FRQ3 TRIP FRQ3 relay Trip command 246 F41 TRIP FRQ4 relay F41 Trip command 247 F42 TRIP FRQ4 relay F42 Trip command 248 DF-R4 TRIP DFRQ4 relay rise Trip command 249 DF-D4 TRIP DFRQ4 relay decay Trip command 250 FRQ4 TRIP FRQ4 relay Trip command 251 FRQ STAGE1 TRIP FRQ1 relay Trip command 252 FRQ STAGE2 TRIP FRQ2 relay Trip command 253 FRQ STAGE3 TRIP FRQ3 relay Trip command 254 FRQ STAGE4 TRIP FRQ4 relay Trip command 255 UV1-OR UV1 element start at DT settings. 256 UV1-A pick up UV1-A relay element start at DT settings. 257 UV1-B pick up UV1-B relay element start at DT settings. 258 UV1-C pick up UV1-C relay element start at DT settings. 259 UV2-OR UV2 element start at DT settings. 260 UV2-A pick up UV2-A relay element start at DT settings. 261 UV2-B pick up UV2-B relay element start at DT settings. 262 UV2-C pick up UV2-C relay element start at DT settings. 137

139 No. SIGNAL Name Contents 263 UV3-OR UV3 element start at DT settings. 264 UV3-A pick up UV3-A relay element start at DT settings. 265 UV3-B pick up UV3-B relay element start at DT settings. 266 UV3-C pick up UV3-C relay element start at DT settings. 267 Not in use 268 Not in use 269 Not in use 270 LOCAL Circuit Breaker Control hierarchy Local state 271 REMOTE Circuit Breaker Control hierarchy Remote state 272 CB_OPN_L Local SW command of Circuit Breaker open 273 CB_CLS_L Local SW command of Circuit Breaker close 274 CB_OPN_BI BI command of Circuit Breaker open 275 CB_CLS_BI BI command of Circuit Breaker close 276 CB_OPN_COMM Communication command of Circuit Breaker open 277 CB_CLC_COMM Communication command of Circuit Breaker close 278 LOCK_BI BI command of Interlock 279 LOCK_COMM Communication command of Interlock 280 CB OPOUT Circuit Breaker Open output 281 CB CLOUT Circuit Breaker Close output 282 Not in use 283 Not in use 284 OV1I-A OV1-A integrated value holding at IDMT setting 285 OV1I-B OV1-B integrated value holding at IDMT setting 286 OV1I-C OV1-C integrated value holding at IDMT setting 287 OV2I-A OV2-A integrated value holding at IDMT setting 288 OV2I-B OV2-B integrated value holding at IDMT setting 289 OV2I-C OV2-C integrated value holding at IDMT setting 290 ZPS1I-A ZPS1 integrated value holding at IDMT setting 291 NPS1I-B NPS1 integrated value holding at IDMT setting 292 ZPS2I-C ZPS2 integrated value holding at IDMT setting 293 NPS2I-A NPS2 integrated value holding at IDMT setting 294 UV1I-A UV1-A integrated value holding at IDMT setting 295 UV1I-B UV1-B integrated value holding at IDMT setting 296 UV1I-C UV1-C integrated value holding at IDMT setting 297 UV2I-A UV2-A integrated value holding at IDMT setting 298 UV2I-B UV2-B integrated value holding at IDMT setting 299 UV2I-C UV2-C integrated value holding at IDMT setting 300 Not in use 301 ETH1_LINKUP Ether port 1 LINK-UP 302 ETH2_LINKUP Ether port 2 LINK-UP 303 IEC61850 RUN IEC61850 RUN 304 GOOSE IN Q1 Goose quality#1 305 GOOSE IN Q2 Goose quality#2 306 GOOSE IN Q3 Goose quality#3 307 GOOSE IN Q4 Goose quality#4 138

140 No. SIGNAL Name Contents 308 GOOSE IN Q5 Goose quality#5 309 GOOSE IN Q6 Goose quality#6 310 GOOSE IN Q7 Goose quality#7 311 GOOSE IN Q8 Goose quality#8 312 GOOSE IN Q9 Goose quality#9 313 GOOSE IN Q10 Goose quality# GOOSE IN Q11 Goose quality# GOOSE IN Q12 Goose quality# GOOSE IN Q13 Goose quality# GOOSE IN Q14 Goose quality# GOOSE IN Q15 Goose quality# GOOSE IN Q16 Goose quality# GOOSE IN 1 Goose data#1 321 GOOSE IN 2 Goose data#2 322 GOOSE IN 3 Goose data#3 323 GOOSE IN 4 Goose data#4 324 GOOSE IN 5 Goose data#5 325 GOOSE IN 6 Goose data#6 326 GOOSE IN 7 Goose data#7 327 GOOSE IN 8 Goose data#8 328 GOOSE IN 9 Goose data#9 329 GOOSE IN 10 Goose data# GOOSE IN 11 Goose data# GOOSE IN 12 Goose data# GOOSE IN 13 Goose data# GOOSE IN 14 Goose data# GOOSE IN 15 Goose data# GOOSE IN 16 Goose data# TEMP001 Temporally output signal 351 TEMP002 Temporally output signal 352 TEMP003 Temporally output signal 353 TEMP004 Temporally output signal 354 TEMP005 Temporally output signal 355 TEMP006 Temporally output signal 356 TEMP007 Temporally output signal 357 TEMP008 Temporally output signal 358 TEMP009 Temporally output signal 359 TEMP0010 Temporally output signal 360 TEMP0011 Temporally output signal 361 TEMP0012 Temporally output signal 139

141 Appendix B Event Record Items 140

142 ID. LCD indication Contents 1 GEN.trip Off / On General trip command 2 GEN.trip-A Off / On General trip command (A Phase) 3 GEN.trip-B Off / On General trip command (B Phase) 4 GEN.trip-C Off / On General trip command (C Phase) 5 GEN.trip-AB Off / On General trip command (A-B Phase) 6 GEN.trip-BC Off / On General trip command (B-C Phase) 7 GEN.trip-CA Off / On General trip command (C-A Phase) 8 OV1-A trip Off / On OV1 trip command (A Phase) 9 OV1-B trip Off / On OV1 trip command (B Phase) 10 OV1-C trip Off / On OV1 trip command (C Phase) 11 OV2-A trip Off / On OV2 trip command (A Phase) 12 OV2-B trip Off / On OV2 trip command (B Phase) 13 OV2-C trip Off / On OV2 trip command (C Phase) 14 OV3-A alarm Off / On OV3 alarm command (A Phase) 15 OV3-B alarm Off / On OV3 alarm command (B Phase) 16 OV3-C alarm Off / On OV3 alarm command (C Phase) 17 UV1-A trip Off / On UV1 trip command (A Phase) 18 UV1-B trip Off / On UV1 trip command (B Phase) 19 UV1-C trip Off / On UV1 trip command (C Phase) 20 UV2-A trip Off / On UV2 trip command (A Phase) 21 UV2-B trip Off / On UV2 trip command (B Phase) 22 UV2-C trip Off / On UV2 trip command (C Phase) 23 UV3-A alarm Off / On UV3 alarm command (A Phase) 24 UV3-B alarm Off / On UV3 alarm command (B Phase) 25 UV3-C alarm Off / On UV3 alarm command (C Phase) 26 OV1-AB trip Off / On OV1 trip command (A-B Phase) 27 OV1-BC trip Off / On OV1 trip command (B-C Phase) 28 OV1-CA trip Off / On OV1 trip command (C-A Phase) 29 OV2-AB trip Off / On OV2 trip command (A-B Phase) 30 OV2-BC trip Off / On OV2 trip command (B-C Phase) 31 OV2-CA trip Off / On OV2 trip command (C-A Phase) 32 OV3-AB alarm Off / On OV3 alarm command (A-B Phase) 33 OV3-BC alarm Off / On OV3 alarm command (B-C Phase) 34 OV3-CA alarm Off / On OV3 alarm command (C-A Phase) 35 UV1-AB trip Off / On UV1 trip command (A-B Phase) 36 UV1-BC trip Off / On UV1 trip command (B-C Phase) 37 UV1-CA trip Off / On UV1 trip command(c-a Phase) 38 UV2-AB trip Off / On UV2 trip command (A-B Phase) 39 UV2-BC trip Off / On UV2 trip command (B-C Phase) 40 UV2-CA trip Off / On UV2 trip command(c-a Phase) 41 UV3-AB alarm Off / On UV3 alarm command (A-B Phase) 42 UV3-BC alarm Off / On UV3 alarm command (B-C Phase) 141

143 No. LCD indication Contents 43 UV3-CA alarm Off / On UV3 alarm command (C-A Phase) 44 OV1 trip Off / On OV1 trip command 45 OV2 trip Off / On OV2 trip command 46 OV3 trip Off / On OV3 trip command 47 UV1 trip Off / On UV1 trip command 48 UV2 trip Off / On UV2 trip command 49 UV3 trip Off / On UV3 trip command 50 ZPS1 trip Off / On ZPS1 trip command 51 ZPS2 alarm Off / On ZPS2 alarm command 52 NPS1 trip Off / On NPS1 trip command 53 NPS2 alarm Off / On NPS2 alarm command 54 OV1-A Off / On OV1-A relay element operating 55 OV1-B Off / On OV1-B relay element operating 56 OV1-C Off / On OV1-C relay element operating 57 OV2-A Off / On OV2-A relay element operating 58 OV2-B Off / On OV2-B relay element operating 59 OV2-C Off / On OV2-C relay element operating 60 OV3-A Off / On OV3-A relay element operating 61 OV3-B Off / On OV3-B relay element operating 62 OV3-C Off / On OV3-C relay element operating 63 UV1-A Off / On UV1-A relay element operating 64 UV1-B Off / On UV1-B relay element operating 65 UV1-C Off / On UV1-C relay element operating 66 UV2-A Off / On UV2-A relay element operating 67 UV2-B Off / On UV2-B relay element operating 68 UV2-C Off / On UV2-C relay element operating 69 UV3-A Off / On UV3-A relay element operating 70 UV3-B Off / On UV3-B relay element operating 71 UV3-C Off / On UV3-C relay element operating 72 OV1-AB Off / On OV1-AB relay element operating 73 OV1-BC Off / On OV1-BC relay element operating 74 OV1-CA Off / On OV1-CA relay element operating 75 OV2-AB Off / On OV2-AB relay element operating 76 OV2-BC Off / On OV2-BC relay element operating 77 OV2-CA Off / On OV2-CA relay element operating 78 OV3-AB Off / On OV3-AB relay element operating 79 OV3-BC Off / On OV3-BC relay element operating 80 OV3-CA Off / On OV3-CA relay element operating 81 UV1-AB Off / On UV1-AB relay element operating 82 UV1-BC Off / On UV1-BC relay element operating 83 UV1-CA Off / On UV1-CA relay element operating 84 UV2-AB Off / On UV2-AB relay element operating 85 UV2-BC Off / On UV2-BC relay element operating 86 UV2-CA Off / On UV2-CA relay element operating 87 UV3-AB Off / On UV3-AB relay element operating 88 UV3-BC Off / On UV3-BC relay element operating 142

144 No. LCD indication Contents 89 UV3-CA Off / On UV3-CA relay element operating 90 OV1 Off / On OV1 relay element operating 91 OV2 Off / On OV2 relay element operating 92 OV3 Off / On OV3 relay element operating 93 UV1 Off / On UV1 relay element operating 94 UV2 Off / On UV2 relay element operating 95 UV3 Off / On UV3 relay element operating 96 ZPS1 Off / On ZPS1 relay element operating 97 ZPS2 Off / On ZPS2 relay element operating 98 NPS1 Off / On NPS1 relay element operating 99 NPS2 Off / On NPS2 relay element operating 100 UVBLK Off / On UVBLK element operating 101 BI1 command Off / On Binary input signal of BI1 102 BI2 command Off / On Binary input signal of BI2 103 BI3 command Off / On Binary input signal of BI3 104 BI4 command Off / On Binary input signal of BI4 105 BI5 command Off / On Binary input signal of BI5 106 BI6 command Off / On Binary input signal of BI6 107 SET. group1 Off / On BI command of change active setting group1 108 SET. group2 Off / On BI command of change active setting group2 109 OV1 block Off / On BI command of OV1 protection scheme block 110 OV2 block Off / On BI command of OV2 protection scheme block 111 OV3 block Off / On BI command of OV3 protection scheme block 112 UV1 block Off / On BI command of UV1 protection scheme block 113 UV2 block Off / On BI command of UV2 protection scheme block 114 UV3 block Off / On BI command of UV3 protection scheme block 115 ZPS1 block Off / On BI command of ZPS1 protection scheme block 116 ZPS2 block Off / On BI command of ZPS2 protection scheme block 117 NPS1 block Off / On BI command of NPS1 protection scheme block 118 NPS2 block Off / On BI command of NPS2 protection scheme block 119 TC fail Off / On BI command of Trip circuit Fail Alarm 120 CB CONT OPN Off / On BI command of CB N/O contact 121 CB CONT CLS Off / On BI command of CB N/C contact 122 EXT trip-3ph Off / On BI command of External trip (3 Phase) 123 EXT trip-aph Off / On BI command of External trip (A Phase) 124 EXT trip-bph Off / On BI command of External trip (B Phase) 125 EXT trip-cph Off / On BI command of External trip (C Phase) 126 Remote reset Off / On BI command of Remote reset 127 SYNC Off / On 128 Store record Off / On BI command of Store Disturbance Record 129 Alarm1 Off / On BI command of Alarm1 130 Alarm2 Off / On BI command of Alarm2 131 Alarm3 Off / On BI command of Alarm3 132 Alarm4 Off / On BI command of Alarm4 133 Relay fail Off / On Relay failure & trip blocked alarm 143

145 No. LCD indication Contents No. 134 Relay fail-a Off / On Relay failure alarm (Trip not blocked) 135 TC err Off / On Trip circuit supervision failure 136 CB err Off / On Circuit Breaker failure 137 V0 err Off / On Zero phase input circuit failure 138 V2 err Off / On VT circuit supervision failure 139 TP COUNT ALM Off / On Trip counter alarm 140 F.record CLR On Clear Fault records 141 E.record CLR On Clear Event records 142 D.record CLR On Clear Disturbance records 143 TP COUNT On Clear Trip counter 144 IND.reset On Reset indication for Trip mode, Alarm etc. 145 Data lost On Record and time for data lost with power supply de-energized for an extended period 146 Sys.Set Change On System setting change command 147 Rly.Set Change On Relay setting change command 148 Grp.Set Change On Group setting change command 149 OV1-A INST Off / On OV1-A relay element start 150 OV1-B INST Off / On OV1-B relay element start 151 OV1-C INST Off / On OV1-C relay element start 152 OV2-A INST Off / On OV2-A relay element start 153 OV2-B INST Off / On OV2-B relay element start 154 OV2-C INST Off / On OV2-C relay element start 155 UV1-A INST Off / On UV1-A relay element start 156 UV1-B INST Off / On UV1-B relay element start 157 UV1-C INST Off / On UV1-C relay element start 158 UV2-A INST Off / On UV2-A relay element start 159 UV2-B INST Off / On UV2-B relay element start 160 UV2-C INST Off / On UV2-C relay element start 161 OV1-AB INST Off / On OV1-AB relay element start 162 OV1-BC INST Off / On OV1-BC relay element start 163 OV1-CA INST Off / On OV1-CA relay element start 164 OV2-AB INST Off / On OV2-AB relay element start 165 OV2-BC INST Off / On OV2-BC relay element start 166 OV2-CA INST Off / On OV2-CA relay element start 167 UV1-AB INST Off / On UV1-AB relay element start 168 UV1-BC INST Off / On UV1-BC relay element start 169 UV1-CA INST Off / On UV1-CA relay element start 170 UV2-AB INST Off / On UV2-AB relay element start 171 UV2-BC INST Off / On UV2-BC relay element start 172 UV2-CA INST Off / On UV2-CA relay element start 173 OV1 INST Off / On OV1 relay element start 174 OV2 INST Off / On OV2 relay element start 175 UV1 INST Off / On UV1 relay element start 176 UV2 INST Off / On UV2 relay element start 177 ZPS1 INST Off / On ZPS1 relay element start 178 ZPS2 INST Off / On ZPS2 relay element start 144

146 No. LCD indication Contents No. 179 NPS1 INST Off / On NPS1 relay element start 180 NPS2 INST Off / On NPS2 relay element start 181 FREQ1 trip Off / On FREQ1 relay element operating 182 FREQ2 trip Off / On FREQ2 relay element operating 183 FREQ3 trip Off / On FREQ3 relay element operating 184 FREQ4 trip Off / On FREQ4 relay element operating 185 FREQ1 block Off / On BI command of FREQ1 protection scheme block 186 FREQ2 block Off / On BI command of FREQ2 protection scheme block 187 FREQ3 block Off / On BI command of FREQ3 protection scheme block 188 FREQ4 block Off / On BI command of FREQ4 protection scheme block 189 Local Off / On CB Control hierarchy Local state 190 Remote Off / On CB Control hierarchy Remote state 191 CB OPC_L Off / On Local SW command of CB Open 192 CB CLC_L Off / On Local SW command of CB Close 193 CB OPC_BI Off / On BI command of CB Open 194 CB CLC_BI Off / On BI command of CB Close 195 CB OPC_COMM Off / On Communication command of CB Open 196 CB CLC_COMM Off / On Communication command of CB Close 197 LOCK_BI Off / On BI command of Interlock 198 LOCK_COMM Off / On Communication command of Interlock 199 CB OPOUT Off / On CB Open Output 200 CB CLOUT Off / On CB Close Output 201 V0 ALM Off / On Zero phase input circuit alarm 202 V2 ALM Off / On VT circuit supervision alarm 203 BO1 operate Off / On Binary output1 operating 204 BO2 operate Off / On Binary output2 operating 205 BO3 operate Off / On Binary output3 operating 206 BO4 operate Off / On Binary output4 operating 207 BO5 operate Off / On Binary output5 operating 208 BO6 operate Off / On Binary output6 operating 209 BO7 operate Off / On Binary output7 operating 210 BO8 operate Off / On Binary output8 operating 211 GEN.pick-up Off / On General start / pick-up command 145

147 Appendix C Binary Output Default Setting List 146

148 Relay Model GRE BO1 BO2 BO3 BO4 R.F. BO No. Terminal No. TB2: Signal Name NON GENERAL TRIP GENERAL ALARM NON Relay fail Contents Off (Link to CB Close SW) Relay trip (General) (Link to CB Open SW) Relay alarm (General) Off Signal No Setting Logic (OR:0, AND:1) Reset (Inst:0, Del:1 Latch:2) GRE BO1 BO2 BO3 BO4 R.F. TB2: NON GENERAL TRIP GENERAL ALARM NON Relay fail Off (Link to CB Close SW) Relay trip (General) (Link to CB Open SW) Relay alarm (General) Off GRE BO1 BO2 BO3 BO4 R.F. TB3: NON GENERAL TRIP GENERAL ALARM NON Relay fail Off (Link to CB Close SW) Relay trip (General) (Link to CB Open SW) Relay alarm (General) Off BO5 BO6 BO7 BO8 TB NON NON NON NON Off Off Off Off

149 Appendix D Details of Relay Menu and LCD & Button Operation 148

150 a-1 b-1 MAIN MENU Record Status Set. (view) Set. (change) Control Test /1 Record Fault Event Disturbance Counter /2 Fault View record Clear Refer to Section /2 Event View record Clear Refer to Section /2 Disturbance View record Clear Refer to Section /3 Fault #1 16/Jul/ :13: Clear records? END=Y CANCEL=N /3 Event 16/Jul/2010 Ext. trip A On Clear records? END=Y CANCEL=N /3 Disturbance #1 16/Jul/ :13: Clear records? END=Y CANCEL=N /4 Fault #1 16/Jul/2010 a-1 a-1 b-1 149

151 /2 Counter View counter Clear Trips Clear Trips A Clear Trips B Clear Trips C /3 Counter Trips ***** TripsA ***** TripsB ***** TripsC ***** Clear Trips? END=Y CANCEL=N Clear Trips A? END=Y CANCEL=N Clear Trips B? END=Y CANCEL=N Clear Trips C? END=Y CANCEL=N 150

152 a-1 /1 Status Metering Binary I/O Relay element Time sync. Clock adjust. LCD contrast Refer to Section /2 Metering Va **.** kv /2 Binary I/O IP [ ] /2 Ry element AN OV1-4[0000 ] /2 Time sync. *BI: Act. /2 16/Jul/ :56:19 [L] /2 LCD contrast /1 Set. (view) Version Description Comms Record Status Protection Binary I/P Binary O/P LED Control Frequency Refer to Section /2 Version Relay type Software /2 Description Plant name Description /2 Comms Addr. Switch GRE A Software GS1EM1-03-* PLC data /3 Addr. Addr. * /3 Switch a-1, b-1 151

153 a-1 b-1 /2 Record Event Disturbance Counter /3 Event BI1 comm. 3 N/O/R/B : /3 Disturbance Time/Starter Scheme sw Binary sig. /4 Time/starter Time1 2.0s /4 Scheme sw /2 Status Metering Time sync. Time zone /3 Counter Scheme sw Alarm set /3 Metering /3 Time sync. /4 Binary sig. SIG1 51 /4 Scheme sw /4 Alarm set TCALM /2 Act. gp. =* Common Group1 Group2 /3 Time zone. /3 Common APPL /3 Group1 Parameter Trip a-1 b-1 c-1 d-1 /4 Parameter Line name VT ratio /5 VT ratio VTS

154 a-1 b-1 c-1 d-1 /4 Trip Scheme sw Prot.element /5 Scheme sw Application OV prot. UV prot. ZPS prot. NPS prot. FRQ prot. /6 Application /6 OV prot. /6 UV prot. /6 ZPS prot. /6 NPS prot. /6 FRQ prot. /3 Group2 Parameter /2 Binary I/P BI STATUS BI1 BI2 BI3 BI4 BI5 BI6 Alarm1 Text Alarm2 Text Alarm3 Text Alarm4 Text /5 Prot.element OV prot. UV prot. ZPS prot. NPS prot. FRQ prot. /3 BI STATUS /3 BI1 Timers Functions /3 BI6 Timers Functions /6 OV prot. OV1 10.0V /6 UV prot. UV1 10.0V /6 ZPS prot. ZPS1 10.0V /6 NPS prot. NPS1 10.0V /6 FRQ prot. FRQ1 10.0Hz /4 Timers BI1PUD 0.00s /4 Functions Alarm Text a-1 b-1 153

155 a-1 b-1 /2 Binary O/P BO1 AND, DL 0, 0, 0, 0 BO4 OR, Lat 141, 1, 2, 3 /2 LED LED Virtual LED /3 LED /2 Control /2 Frequency /1 Set.(change) Password Description Comms Record Status Protection Binary I/P Binary O/P LED Control Frequency /3 Virtual LED IND1 IND2 : Password trap Set.(change) Password [_ ] : Confirmation trap Change settings? ENTER=Y CANCEL=N /4 IND1 BIT1 /4 IND2 BIT1 I,O I,O Set.(change) Input [_ ] Set.(change) Retype [_ ] Refer to Section /2 Description Plant name Description Refer to Section ABCDEFG ABCDEFG /2 Comms Addr. Switch Refer to Section /3 Addr. Addr /3 Switch RS485 a-1 b-2 154

156 a-1 b-2 /2 Record Event Disturbance Counter Refer to Section /3 Event BI1 comm. BI1 comm. N/O/R/B : : 3 _ /4 Time/starter /3 Disturbance Time/starter Scheme sw Binary sig. /4 Scheme sw /4 Binary sig. /3 Counter Scheme sw Alarm set /4 Scheme sw /4 Alarm set /2 Status Metering Time sync. Time zone Refer to Section /2 Protection Change act. gp. Change set. Copy gp. /3 Metering Display /3 Time sync. Time sync. /3 Time zone GMT Refer to Section _ /3 Change act. gp. /3 Act gp.=1 Common Group1 Group2 /4 Common APPL a-1 b-2 c-2 d-2 155

157 a-1 b-2 c-2 d-2 /4 Group1 Parameter Trip /5 Parameter Line name VT ratio _ ABCDEFG /6 VT ratio VTS /5 Trip Scheme sw Prot.element /6 Scheme sw Application OV prot. UV prot. ZPS prot. NPS prot. FRQ prot. /7 Application /7 OV prot. /7 UV prot. /7 ZPS prot. /7 NPS prot. /7 FRQ prot. /6 Prot.element OV prot. UV prot. ZPS prot. NPS prot. FRQ prot. /7 OV prot. /7 UV prot. /7 ZPS prot. /4 Group2 Parameter /7 NPS prot. /7 FRQ prot. a-1, b-2 c-2 156

158 a-1 b-2 c-2 /3 Copy A to B A _ B _ a-1 b-2 c-3 /2 Binary I/P BI Status BI1 BI2 BI3 BI4 BI5 BI6 Alarm1 Text Alarm2 Text Alarm3 Text Alarm4 Text Refer to Section /2 Binary O/P BO1 BO2 BO3 BO4 Refer to Section /2 LED LED Virtual LED /3 LED LED1 LED2 LED3 LED4 LED5 LED6 CB CLOSED /3 BI Status BITHR1 /3 BI1 Timers Functions /3 BI6 Timers Functions ABCDEFG Alarm Text /3 BO1 Logic/Reset Functions /3 BO4 Logic/Reset Functions Refer to Section /4 LED1 Logic/Reset Functions LED Color /4 LED6 Logic/Reset Functions LED Color /4 CB CLOSED LED Color /4 Timers /4 Functions /4 Logic/Reset /4 Functions /5 Logic/Reset /5 Functions /5 LED Color /5 LED Color 157

159 a-1 b-2 c-3 /3 Virtual LED IND1 IND2 /2 Control /4 IND1 Reset Functions /4 IND2 Reset Functions /5 Reset /5 Functions /2 Frequency : Password trap Control Password [_ ] /1 Control Password(Ctrl) Local/Remote CB OPEN/CLOSE Refer to Section Control Input [_ ] Refer to Section Control Retype [_ ] /1 Test Password(Test) Switch Binary O/P Refer to Section /2 Switch A.M.F. 1 _ Off/On UVTST 0 Off/S0/S3 Test Input [_ ] Test Retype [_ ] Refer to Section : Password trap Test Password [_ ] /2 Binary O/P BO1 0 _ Disable/Enable Operate? ENTER=Y CANCEL=N BO4 0 Disable/Enable 158

160 Appendix E Case Outline 159

161 Case Outline 160

162 Case Outline for model

163 Appendix F Typical External Connection 162

164 A B C OUTPUT CONACTS SIGNAL LIST (DEFAULT) BO1 BO2 BO3 BO4 OFF(CB CLOSE) GENERAL TRIP GENERAL ALARM OFF Control Power P Controled CB P N FG TB GRE A APPL ; 1PP GND + - N.C. Vph Ve POWER SUPPLY FRONT PANEL USB Type B Rear PANEL RJ45 N.C. CB CLOSE SW CB OPEN SW DEFAULT BI1-2; Off AUXILIARY Available for TCS (CB CLOSED) AUXILIARY Available for TCS (CB OPEN) CB CLOSE CB OPEN/TRIP AUXILIARY AUXILIARY Relay fail N.C. Threshold 33.6/77/154V Threshold 33.6/77/154V N.C. * * TB2 BO1 1 2 BO2 3 4 BO3 5 6 BO4 7 8 BO BI BI RS485 COM 21 A+ 23 B- 24 TRIP COIL N Relay fail indicator N N CLOSE COIL A+ B- COM COM A+ B- *BO3 and BO4 are NOT applicable for direct CB coil connection. Typical External Connections for the GRE A 1PP setting 163

165 A B C OUTPUT CONACTS SIGNAL LIST (DEFAULT) BO1 BO2 BO3 BO4 OFF(CB CLOSE) GENERAL TRIP GENERAL ALARM OFF P Control Power Controled CB P N FG TB GRE A APPL ; 1PN GND + - N.C. Vph Ve POWER SUPPLY FRONT PANEL USB Type B Rear PANEL RJ45 N.C. (CB CLOSED) (CB OPEN) CB CLOSE SW CB OPEN SW DEFAULT BI1-2; Off AUXILIARY Available for TCS AUXILIARY Available for TCS AUXILIARY AUXILIARY AUXILIARY AUXILIARY CB CLOSE CB OPEN/TRIP AUXILIARY AUXILIARY Relay fail N.C. * * Threshold 33.6/77/154V Threshold 33.6/77/154V Threshold 77/154V TB2 BO1 1 2 BO2 3 4 BO3 5 6 BO4 7 8 BO BI BI RS485 COM 21 A+ 23 B- 24 N TRIP COIL N Relay fail indicator N CLOSE COIL A+ B- COM COM A+ B- *BO3 and BO4 are NOT applicable for direct CB coil connection. Typical External Connections for the GRE A 1PN setting 164

166 A B C OUTPUT CONACTS SIGNAL LIST (DEFAULT) BO1 BO2 BO3 BO4 OFF(CB CLOSE) GENERAL TRIP GENERAL ALARM OFF Control Power P Controled CB P N FG TB GRE A APPL ; 2PP 2PZ GND + - N.C. Vab Vbc Ve POWER SUPPLY FRONT PANEL USB Type B Rear PANEL RJ45 N.C. CB CLOSE SW CB OPEN SW DEFAULT BI1-2; Off AUXILIARY Available for TCS (CB CLOSED) AUXILIARY Available for TCS (CB OPEN) CB CLOSE CB OPEN/TRIP Relay fail TB2 BO1 1 2 BO2 3 4 AUXILIARY BO3 5 6 AUXILIARY BO4 N.C. Threshold 33.6/77/154V Threshold 33.6/77/154V N.C. * * 7 8 BO BI BI RS485 COM 21 A+ 23 B- 24 TRIP COIL N Relay fail indicator N N CLOSE COIL A+ B- COM COM A+ B- *BO3 and BO4 are NOT applicable for direct CB coil connection. Typical External Connections for the GRE A 2PP ( 2PZ ) setting 165

167 A B C OUTPUT CONACTS SIGNAL LIST (DEFAULT) BO1 BO2 BO3 BO4 OFF(CB CLOSE) GENERAL TRIP GENERAL ALARM OFF P Control Power Controled CB P N FG TB GRE A APPL ; 3PN 3PV GND + - N.C. Va Vb Vc Ve POWER SUPPLY FRONT PANEL USB Type B Rear PANEL RJ45 N.C. (CB CLOSED) (CB OPEN) CB CLOSE SW CB OPEN SW DEFAULT BI1-2; Off AUXILIARY Available for TCS AUXILIARY Available for TCS AUXILIARY AUXILIARY AUXILIARY AUXILIARY CB CLOSE CB OPEN/TRIP AUXILIARY AUXILIARY Relay fail N.C. * * Threshold 33.6/77/154V Threshold 33.6/77/154V Threshold 77/154V TB2 BO1 1 2 BO2 3 4 BO3 5 6 BO4 7 8 BO BI BI RS485 COM 21 A+ 23 B- 24 N TRIP COIL N Relay fail indicator N CLOSE COIL A+ B- COM COM A+ B- *BO3 and BO4 are NOT applicable for direct CB coil connection. Typical External Connections for the GRE A 3PN ( 3PV ) setting 166

168 A B C OUTPUT CONACTS SIGNAL LIST (DEFAULT) BO1 BO2 BO3 BO4 OFF(CB CLOSE) GENERAL TRIP GENERAL ALARM OFF P Control Power Controled CB P N FG TB GRE A APPL ; 3PP GND + - N.C. Vab Vbc Vca Ve POWER SUPPLY FRONT PANEL USB Type B Rear PANEL RJ45 N.C. CB CLOSE SW CB OPEN SW DEFAULT BI1-2; Off AUXILIARY Available for TCS (CB CLOSED) AUXILIARY Available for TCS (CB OPEN) CB CLOSE CB OPEN/TRIP Relay fail TB2 BO1 1 2 BO AUXILIARY BO3 AUXILIARY BO4 N.C. Threshold 33.6/77/154V Threshold 33.6/77/154V N.C. * * 7 8 BO BI BI RS485 COM 21 A+ 23 B- 24 TRIP COIL N Relay fail indicator N N CLOSE COIL A+ B- COM COM A+ B- *BO3 and BO4 are NOT applicable for direct CB coil connection. Typical External Connections for the GRE A 3PP setting 167

169 A B C P Control Power Controled CB P N OUTPUT CONACTS SIGNAL LIST (DEFAULT) BO1 BO2 BO3 BO4 BO5 BO6 BO7 BO8 FG OFF(CB CLOSE) GENERAL TRIP GENERAL ALARM OFF OFF OFF OFF OFF TB GRE A APPL ; 3PP GND + - N.C. Vab Vbc Vca Ve POWER SUPPLY FRONT PANEL USB Type B Rear PANEL RJ45 N.C. Optional Communication Port *** 100BASE-TX 1port / 2port 100BASE-FX 1port / 2port (CB CLOSED) (CB OPEN) CB CLOSE SW CB OPEN SW DEFAULT BI1-2; Off AUXILIARY Available for TCS AUXILIARY Available for TCS AUXILIARY AUXILIARY AUXILIARY AUXILIARY CB CLOSE CB OPEN/TRIP Relay fail TB3 BO1 1 2 BO2 3 4 AUXILIARY BO3 5 6 AUXILIARY BO4 N.C. * * Threshold 33.6/77/154V Threshold 33.6/77/154V Threshold 77/154V AUXILIARY 7 8 R.F BI BI RS485 COM 21 A+ 23 B- 24 TB1 BO5 1 2 AUXILIARY BO6 3 4 AUXILIARY BO7 5 6 AUXILIARY BO8 N.C. * * N Control Power TRIP COIL N Relay fail indicator N CLOSE COIL A+ B- COM COM A+ B- *BO3, 4, 7 and 8 are NOT applicable for direct CB coil connection. Typical External Connections for the GRE A 3PP setting 168

170 Appendix G Relay Setting Sheet 1. Relay Identification 2. Line parameter 3. Contacts setting 4. Relay setting sheet 169

171 1. Relay Identification Date: Relay type Frequency Supply voltage Serial Number AC voltage Active setting group Password Setting Control Test 2. Line parameter VT ratio PVT: RVT: 3. Contacts setting TB2 BO1 Terminal 1-2 BO2 Terminal 3-4 BO3 Terminal 5-6 BO4 Terminal 7-8 (For model type 412, the terminal block number is TB3 ) BI1 Terminal BI2 Terminal BI3 Terminal BI4 Terminal BI5 Terminal BI6 Terminal TB1 (Only for model type 412) BO5 Terminal 1-2 BO6 Terminal 3-4 BO7 Terminal 5-6 BO8 Terminal

172 4. Relay setting sheet Menu Name Range Contents Default Password(Set) Password for None Setting change (0000) Password Password(Ctrl) Password for Control None (0000) Password(Test) Password for Test None (0000) Description Plant name Specified by user Plant name - Description ditto Memorandum for user - Modbus Relay ID No.for Modbus 1 IEC Relay ID No.for IEC 1 RS485BR 9.6 / 19.2 Baud rate for Modbus 19.2 PORTTYPE RS485-1 Switch for communications RS485-1(0) Ether P Off / IEC61850 Switch for communications Off(0) RS485P Off/MOD/IEC103 Switch for communications MOD(1) IECNFI 1.2 / 2.4 Switch for communications 2.4(1) IECBLK Normal/Blocked Switch for communications Normal(0) IECB IEC user specified signal 1 1 IECB IEC user specified signal 2 2 IECB IEC user specified signal 3 3 IECB IEC user specified signal 4 4 IECGT 0-8 IEC General Trip 2 IECAT 0-8 IEC Trip A phase 2 IECBT 0-8 IEC Trip B phase 2 IECCT 0-8 IEC Trip C phase 2 IECE IEC user event 1 0 IECE IEC user event 2 0 Communi IECE IEC user event 3 0 -cation IECE IEC user event 4 0 IECE IEC user event 5 0 IECE IEC user event 6 0 IECE IEC user event 7 0 IECE IEC user event 8 0 IECI IEC user INF 1 0 IECI IEC user INF 2 0 IECI IEC user INF 3 0 IECI IEC user INF 4 0 IECI IEC user INF 5 0 IECI IEC user INF 6 0 IECI IEC user INF 7 0 IECI IEC user INF 8 0 IECGI1 No / Yes IEC event type setting 1 No(0) IECGI2 No / Yes IEC event type setting 2 No(0) IECGI3 No / Yes IEC event type setting 3 No(0) IECGI4 No / Yes IEC event type setting 4 No(0) IECGI5 No / Yes IEC event type setting 5 No(0) IECGI6 No / Yes IEC event type setting 6 No(0) IECGI7 No / Yes IEC event type setting 7 No(0) IECGI8 No / Yes IEC event type setting 8 No(0) 171

173 Menu Name Range Contents Default 61850BLK Normal / Blocked IEC61850 Block setting Normal(0) 61850AUT Off / On IEC61850 Auto negotiation setting Off(0) TSTMOD Off / On IEC61850 Test mode Off(0) PINGCHK Off / On Ping check Off(0) IP IP address 1 of ETH IP IP address 2 of ETH IP IP address 3 of ETH 1 19 IP IP address 4 of ETH SM Subnet mask 1 of ETH SM Subnet mask 2 of ETH SM Subnet mask 3 of ETH SM Subnet mask 4 of ETH 1 0 Communi GW Default gateway of ETH cation GW Default gateway of ETH1 168 GW Default gateway of ETH1 19 GW Default gateway of ETH1 1 SI SNTP server address 1 0 SI SNTP server address 2 0 SI SNTP server address 3 0 SI SNTP server address 4 0 PG Ping check add1 of ETH1 0 PG Ping check add2 of ETH1 0 PG Ping check add3 of ETH1 0 PG Ping check add4 of ETH1 0 SMODE Off / On SNTP mode 0(Off) DEADT s Keep-arrive timeout 7200 GOINT 1 60 s GOOSE receive check interval 60 BI1 comm. None/Operate/ Both(3) BI1 command trigger Reset/Both BI2 comm. None/Operate/ Both(3) BI2 command trigger Reset/Both Event Record Disturbance Record BI3 comm. BI4 comm. BI5 comm. BI6 comm. None/Operate/ Reset/Both None/Operate/ Reset/Both None/Operate/ Reset/Both None/Operate/ Reset/Both BI3 command trigger BI4 command trigger BI5 command trigger BI6 command trigger Time s Recording period 3.0 before fault Time s Recording period 2.0 after fault OV V OV element for disturbance UV V UV element for disturbance NPS V NPS element for disturbance ZPS V ZPS element for disturbance Trip Off / On Disturbance trigger On Both(3) Both(3) Both(3) Both(3) 172

174 Menu Name Range Contents Default BI Off / On Disturbance trigger On OV Off / On Disturbance trigger On UV Off / On Disturbance Trigger On NPS Off / On Disturbance Trigger On ZPS Off / On Disturbance Trigger On SIG SIG SIG SIG SIG SIG SIG SIG Disturbance SIG Record Disturbance Trigger SIG SIG SIG SIG SIG SIG SIG SIG SIG TCSPEN Off / On / Opt-On Trip Circuit Off Supervision Enable Circuit Breaker State Off CBSMEN Off / On Counter Monitoring Alarm Enable TCAEN Off / On Trip Count Alarm Enable Off TCALM Trip Count Alarm Threshold Display Pri / Sec Metering Pri Status Off / BI / Modbus Off Time sync. Time synch setting / 103 / SNTP BITHR1 48 / 110 /220 BI1,BI2 Threshold 110 Binary Input BITHR2 110 / 220 BI3-BI6 Threshold 110 BI1PUD BI1 Pick-up delay 0.00 BI1DOD BI1 Drop-off delay 0.00 BI1SNS Norm / Inv BI1 Trigger Norm BI1SGS Off / 1 / 2 BI1 Settings Group Off OV1BLK Off / On OV1 Block Off OV2BLK Off / On OV2 Block Off OV3BLK Off / On OV3 Block Off BI1 UV1BLK Off / On UV1 Block Off UV2BLK Off / On UV2 Block Off UV3BLK Off / On UV3 Block Off ZP1BLK Off / On ZPS1 Block Off ZP2BLK Off / On ZPS2 Block Off NP1BLK Off / On NPS1 Block Off NP2BLK Off / On NPS2 Block Off TCFALM Off / On Trip Circuit Fail Alarm Off 173

175 Menu Name Range Contents Default CBOPN Off / On Circuit Breaker Open Off CBCLS Off / On Circuit Breaker Closed Off EXT3PH Off / On External Trip 3 Phase Off EXTAPH Off / On External Trip A Phase Off EXTBPH Off / On External Trip B Phase Off EXTCPH Off / On External Trip C Phase Off RMTRST Off / On Remote Reset Off SYNCLK Off / On Synchronize clock Off STORCD Off / On Store Disturbance Record Off BI1 Alarm1 Off / On Alarm screen 1 Off Alarm2 Off / On Alarm screen 2 Off Alarm3 Off / On Alarm screen 3 Off Alarm4 Off / On Alarm screen 4 Off RMTOPN Off / On Remote CB Open Control Off RMTCLS Off / On Remote CB Close Control Off CNTLCK Off / On Interlock input Off FRQ1BLK Off / On FRQ1 Block Off FRQ2BLK Off / On FRQ2 Block Off FRQ3BLK Off / On FRQ3 Block Off FRQ4BLK Off / On FRQ4 Block Off BI2PUD BI2 Pick-up delay 0.00 BI2DOD BI2 Drop-off delay 0.00 BI2 BI2SNS Norm / Inv BI2 Trigger Norm Binary BI2SGS Off / 1 / 2 BI2 Settings Group Off Input The following items are same as BI1 BI3PUD BI3 Pick-up delay 0.00 BI3DOD BI3 Drop-off delay 0.00 BI3 BI3SNS Norm / Inv BI3 Trigger Norm BI3SGS Off / 1 / 2 BI3 Settings Group Off The following items are same as BI1 BI4PUD BI4 Pick-up delay 0.00 BI4DOD BI4 Drop-off Delay 0.00 BI4 BI4SNS Norm / Inv BI4 Trigger Norm BI4SGS Off / 1 / 2 BI4 Settings Group Off The following items are same as BI1 BI5PUD BI5 Pick-up delay 0.00 BI5DOD BI5 Drop-off Delay 0.00 BI5 BI5SNS Norm / Inv BI5 Trigger Norm BI5SGS Off / 1 / 2 BI5 Settings Group Off The following items are same as BI1 BI6PUD BI6 Pick-up delay 0.00 BI6DOD BI6 Drop-off Delay 0.00 BI6 BI6SNS Norm / Inv BI6 Trigger Norm BI6SGS Off / 1 / 2 BI6 Settings Group Off The following items are same as BI1 Binary Output BO1 Logic OR / AND Logic Gate Type OR Reset Ins / DI / Dw / Lat Reset Operation DI In # Functions 141 In # Functions 0 In # Functions 0 174

176 Menu Name Range Contents Default BO1 In # Functions 0 TBO s Delay / Pulse width 0.20 BO2 Same as BO1 Binary BO3 Same as BO1 Output BO4 Same as BO1 BO5 Same as BO1 (for model 412) BO6 Same as BO1 (for model 412) BO7 Same as BO1 (for model 412) BO8 Same as BO1 (for model 412) Logic OR / AND Logic Gate Type OR Reset Inst / Latch Reset Operation Inst In # Functions 0 LED1 In # Functions 0 In # Functions 0 In # Functions 0 Color R / G / Y LED Color R LED2 Same as LED1 LED3 Same as LED1 LED4 Same as LED1 LED5 Same as LED1 Confi- LED6 Same as LED1 gurable CB CLOSED Color R / G / Y CB CLOSED LED Color R LED IND1 Reset Inst / Latch IND1 Reset operation Inst IND2 Reset Inst / Latch IND2 Reset operation Inst BIT Virtual LED 0 BIT Virtual LED 0 BIT Virtual LED 0 IND1 BIT Virtual LED 0 BIT Virtual LED 0 BIT Virtual LED 0 BIT Virtual LED 0 BIT Virtual LED 0 IND2 Same as IND1 Active gp. 1-2 Active setting group 1 ALARM LED lighting Active group / Common AOLED Off / On control at alarm output On Control Disable / Enable Control Enable Disable Interlock Disable / Enable Interlock Enable Disable Control Hierarchy Local / Remote Control Hierarchy -- (if Control = Enable) (Local) Frequency 50Hz / 60Hz Frequency 50Hz 175

177 Menu Name Range Contents Default Line name Specified by user Line name -- PVT VT ratio of Phase VT 100 RVT VT ratio of Earth Fault CT 100 SVCNT ALM&BLK/ALM AC input imbalance ALM& BLK OV1EN Off / DT/IDMT/C OV1 Enable Off OV OV2EN Off / DT/IDMT/C OV2 Enable Off OV3EN Off / On OV3 Enable Off UV1EN Off / DT/IDMT/C UV1 Enable DT UV UV2EN Off / DT/IDMT/C UV2 Enable Off UV3EN Off / On UV3 Enable Off VBKEN Off / On UV Block Enable Off ZPS ZPS1EN Off / DT/IDMT/C ZPS1 Enable DT ZPS2EN Off / DT/IDMT/C ZPS2 Enable Off NPS NPS1EN Off / DT/IDMT/C NPS1 Enable Off NPS2EN Off / DT/IDMT/C NPS2 Enable Off FT1 Off/O/U/B/ B FRQ1 Enable OO/UU DFT1 Off/R/D/Both DFRQ1 Enable Both Logic1 L1/L2/L3/L4/L5 FRQ1 logic L1 FT2 Off/O/U/B/ B FRQ2 Enable OO/UU DFT2 Off/R/D/Both DFRQ2 Enable Both Logic2 L1/L2/L3/L4/L5 FRQ2 logic L1 FRQ Off/O/U/B/ B FT3 FRQ3 Enable OO/UU Protection DFT3 Off/R/D/Both DFRQ3 Enable Both Logic3 L1/L2/L3/L4/L5 FRQ3 logic L1 FT4 Off/O/U/B/ B FRQ4 Enable OO/UU DFT4 Off/R/D/Both DFRQ4 Enable Both Logic4 L1/L2/L3/L4/L5 FRQ4 logic L1 OV V OV1 Threshold V TOV OV1 Time multiplier (if OV1EN = IDMT) TOV s OV1 Definite time 0.10 s (if OV1EN = DT) TOV1R s OV1 Definite time reset 0.0 s OV1DPR % OV1 DO/PU ratio 95% OV V OV2 Threshold V OV OV2 Time multiplier TOV (if OV2EN = IDMT) TOV s OV2 Definite time 0.10 s (if OV2EN = DT) TOV2R s OV2 Definite time reset 0.0 s OV2DPR % OV2 DO/PU ratio 95% OV V OV3 Threshold V TOV s OV3 Definite time 0.10 s OV3DPR % OV3 DO/PU ratio 95% OV1-k Configurable IDMT

178 Menu Name Range Contents Default OV1-α Curve setting OV OV1-C (if OV1EN = C) OV2-k Configurable IDMT 1.00 OV2-α Curve setting OV2-C (if OV2EN = C) UV V UV1 Threshold 60.0 V TUV UV1 Time multiplier (if UV1EN = IDMT) TUV s UV1 Definite time 0.10 s (if UV1EN = DT) TUV1R s UV1 Definite time reset 0.0 s UV V UV2 Threshold 60.0 V TUV UV2 Time multiplier (if UV2EN = IDMT) UV UV2 Definite time 0.10 s TUV s (if UV2EN = DT) TUV2R s UV2 Definite time reset 0.0 s UV V UV3 Threshold 20.0 V TUV s UV3 Definite time 0.10 s VBLK V UV Blocking 10.0 V UV1-k Configurable IDMT 1.00 UV1-α Curve setting UV1-C (if UV1EN = C) UV2-k Configurable IDMT 1.00 UV2-α Curve setting UV2-C (if UV2EN = C) Protection ZPS V ZPS1 Threshold 20.0 V ZPS1 Time multiplier TZPS (if ZPS1EN = IDMT) TZPS s ZPS1 Definite time 0.00 s (if ZPS1EN = DT) TZPS1R s ZPS1 Definite time reset 0.0 s ZPS V ZPS2 Threshold 40.0 V ZPS TZPS ZPS2 Time multiplier (if ZPS2EN = IDMT) TZPS s ZPS2 Definite time 0.00 s (if ZPS2EN = DT) TZPS2R s ZPS2 Definite time reset 0.0 s ZPS1-k Configurable IDMT 1.00 ZPS1-α Curve setting ZPS1-C (if ZPS1EN = C) ZPS2-k Configurable IDMT 1.00 ZPS2-α Curve setting ZPS2-C (if ZPS2EN = C) NPS V NPS1 Threshold 20.0 V TNPS NPS1 Time multiplier (if NPS1EN = IDMT) NPS NPS1 Definite time 0.00 s TNPS s (if NPS1EN = DT) TNPS1R s NPS1 Definite time reset 0.0 s 177

179 Menu Name Range Contents Default NPS V NPS2 Threshold 40.0 V TNPS NPS2 Time multiplier (if NPS2EN = IDMT) TNPS s NPS2 Definite time 0.00 s (if NPS2EN = DT) NPS TNPS2R s NPS2 Definite time reset 0.0 s NPS1-k Configurable IDMT 1.00 NPS1-α Curve setting NPS1-C (if NPS1EN = C) NPS2-k Configurable IDMT 1.00 NPS2-α Curve setting NPS2-C (if NPS2EN = C) F Hz Over frequency stage Hz Hz threshold Hz TF s OF1 time delay 1.00 s Protection Hz Under frequency stage Hz F Hz Threshold Hz TF s UF1 time delay 1.00 s DF Hz/s DFRQ stage1 0.5 Hz/s F Hz Over frequency stage Hz Hz Threshold Hz TF s OF2 time delay 1.00 s F Hz Under frequency stage Hz Hz Threshold Hz TF s UF2 time delay 1.00 s DF Hz/s DFRQ stage2 0.5 Hz/s FRQ Hz Over frequency stage Hz F Hz Threshold Hz TF s OF3 time delay 1.00 s F Hz Under frequency stage Hz Hz Threshold Hz TF s UF3 time delay 1.00 s DF Hz/s DFRQ stage3 0.5 Hz/s F Hz Over frequency stage Hz Hz Threshold Hz TF s OF3 time delay 1.00 s F Hz Under frequency stage Hz Hz Threshold Hz TF s UF4 time delay 1.00 s DF Hz/s DFRQ stage4 0.5 Hz/s FVBLK V Under voltage block 40 V A.M.F. Off / On Automatic monitoring Off Test UVTEST Off / On Under voltage test Off IECTST Off / On IEC103 test mode Off 178

180 Appendix H Commissioning Test Sheet (sample) 1. Relay identification 2. Preliminary check 3. Hardware check 3.1 User interface check 3.2 Binary input/binary output circuit check 3.3 AC input circuit check 4. Function test 4.1 Overvoltage and undervoltage elements test 4.2 Negative sequence overvoltage elements test 5. Protection scheme test 6. Metering and recording check 179

181 1. Relay identification Type Model Station Circuit Protection scheme Active settings group number Serial number System frequency Date Engineer Witness 2. Preliminary check Ratings Power supply Wiring Calendar and clock 3. Hardware check 3.1 User interface check 3.2 Binary input/binary output circuit check Binary input circuit Binary output circuit 3.3 AC input circuit check 180

182 4. Function test 4.1 Overvoltage and undervoltage elements test (1) Operating value test Element Voltage setting Measured voltage OV1 OV2 OV3 UV1 UV2 UV3 ZPS1 ZPS2 (2) Operating time test (IDMT) Element Multiplier setting Changed voltage Measured time OV1 OV2 UV1 UV2 ZPS1 ZPS2 Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting 181

183 4.2 Negative overvoltage elements test (1) Operating value test Element Voltage setting Measured voltage NPS1 NPS2 (2) Operating time test (IDMT) Element Multiplier setting Changed voltage Measured time NPS1 NPS2 Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting Voltage setting 4.3 Frequency elements test Element Frequency setting Measured frequency FRQ1 FRQ2 FRQ3 FRQ4 5. Protection scheme test 6. Metering and recording check 7. Conjunctive test Scheme Results On load check Tripping circuit 182

184 Appendix I Return Repair Form 183

185 RETURN / REPAIR FORM Please complete this form and return it to TOSHIBA CORPORATION together with the GRE130 to be repaired. TOSHIBA CORPORATION Fuchu Operations Industrial and Power Systems & Services 1, Toshiba-cho, Fuchu-shi, Tokyo, Japan For: Power Systems Protection & Control Department Quality Assurance Section Type: GRE130 Model: (Example: Type: GRE130 Model: 411A ) Product No.: Serial No.: Date: 1. Reason for returning the relay mal-function does not operate increased error investigation required others 2. Fault records, event records or disturbance records stored in the relay and relay settings are very helpful information to investigate the incident. Please provide relevant information regarding the incident on USB stick or CD rom, or fill in the attached fault record sheet and relay setting sheet. 184

186 Fault Record Date/Month/Year Time / / / : :. Faulty phase: Prefault values V an : V V bn : V V cn : V V ab : V V bc : V V ca : V V ph : V V 0 : V V 1 : V V 2 : V f: Hz Fault values V an : V V bn : V V cn : V V ab : V V bc : V V ca : V V ph : V V 0 : V V 1 : V V 2 : V f: Hz (Example: 04/ Jul./ :09:58.442) 185

187 3. What was the message on the LCD display at the time of the incident? 4. Describe the details of the incident: 5. Date incident occurred Day/Month/Year: / / / (Example: 10/Dec/2012) 6. Give any comments about the GRE130, including any relevant documents: 186

188 Customer Name: Company Name: Address: Telephone No.: Facsimile No.: Signature: 187

189 Appendix J Technical Data 188

190 TECHNICAL DATA Ratings AC voltage V n : Frequency: Power supply: 63.5V / 110V 50/60Hz Vdc or Vac (Operative range: Vdc / Vac) Vdc (Operative range: Vdc) 24-48Vdc (Operative range: Vdc) Superimposed AC ripple on DC supply: maximum 12% Power supply interruption: Binary input circuit DC voltage: Overload Ratings AC voltage inputs: Burden AC phase voltage inputs: maximum 50ms at 110V For alarm indication Vdc (Operative range: Vdc) Vdc (Operative range: Vdc) 24-48Vdc (Operative range: Vdc) For trip circuit supervision Operative range: 38.4V (for 110Vdc rating) 88V (for 220/250Vdc rating) 19.2V (for 48Vdc rating) 9.6V (for 24Vdc rating) 2 times rated voltage continuous 0.1 VA (at rated voltage) Power supply: 10W (quiescent), 15W (maximum) Binary input circuit: Overvoltage Protection (59) 0.5W per input at 220Vdc 1 st, 2 nd, 3 rd Overvoltage thresholds: OFF, V in 0.1V steps Delay type: DTL, IDMTL IDMTL Time Multiplier Setting TMS: DTL delay: DO/PU ratio Reset Delay: Undervoltage Protection (27) in 0.01 steps Inst, s in 0.01s steps 10-98% in 1% steps Instantaneous, s in 0.1s steps 1 st, 2 nd, 3 rd Undervoltage thresholds: OFF, V in 0.1V steps Delay type: DTL, IDMTL IDMTL Time Multiplier Setting TMS: in 0.01 steps DTL delay: Reset Delay: Zero Sequence Overvoltage (ZPS) Protection (59N) Inst, s in 0.01s steps Instantaneous, s in 0.1s steps 1 st, 2 nd ZPS Overvoltage thresholds: OFF, V in 0.1V steps Delay type (1 st threshold only): DTL, IDMTL IDMTL Time Multiplier Setting TMS: DTL delay: Reset Delay (1 st threshold only): in 0.01 steps Inst, s in 0.01s steps Instantaneous, s in 0.1s steps 189

191 Negative Phase Sequence Overvoltage (NPS) Protection (47) 1 st, 2 nd NPS Overvoltage thresholds: OFF, V in 0.1V steps Delay type (1 st threshold only): DTL, IDMTL IDMTL Time Multiplier Setting TMS: in 0.01 steps DTL delay: Reset Delay (1 st threshold only): Frequency Protection (81U/O) Inst, s in 0.01s steps Instantaneous, s in 0.1s steps 1 st 4 th Under frequency Hz in 0.01Hz steps (rated frequency: 50Hz) Hz in 0.01Hz steps (rated frequency: 60Hz) 1 st 4 th Under frequency Hz in 0.01Hz steps (rated frequency: 50Hz) Hz in 0.01Hz steps (rated frequency: 60Hz) Frequency rate-of-change +0.1 to +9.9Hz/s in 0.1Hz/s steps 0.1 to 9.9Hz/s in 0.1Hz/s steps Timer for stage 1 st - 4 th s in 0.01 s steps Frequency UV Block Accuracy V in 1V steps IDMTL Overvoltage Pick-up: 100% of setting ± 5% All Other Overvoltage Pick-ups: Overvoltage PU/DO ratio: IDMTL Undervoltage Pick-up: 95% of setting ± 5% All Other Undervoltage Pick-ups: 100% of setting ± 5% Undervoltage PU/DO ratio: Over Frequency Pick-ups: Under Frequency Pick-ups: Frequency rate-of-change Pick-ups: Inverse Operate Time: 100% of setting ± 5% approx, 95% (settable for phase overvoltage) approx, 105% 100% of setting ± 0.05Hz (setting: rated frequency Hz) 100% of setting ± 0.05Hz (setting: rated frequency Hz) 100% of setting ± 0.07Hz/s (setting: 5.00Hz/s) IEC , ±5% or 100ms OV Definite Operate Time; UV Definite Operate Time; ZPS Definite Operate Time; NPS Definite Operate Time; Under/Over Frequency Operate Time (OV; 1.2 G/Gs G D /Gs, UV; 0 G/Gs 1) DTL + 45ms (DT, input: 200% of setting) DTL + 45ms (DT, input: 80% of setting) DTL + 45ms (DT, input: 200% of setting) DTL + 50ms (DT, input: 200% of setting) DTL ms (rated frequency: 50Hz) G D = 300V Frequency rate-of-change Operate Time DTL ms (rated frequency: 60Hz) ms (rated frequency: 50Hz, input: 200% of setting) ms (rated frequency: 60Hz, input: 200% of setting) Time delays includes operating time of trip contacts Front Communication port - local PC (USB2.0) Connector type: USB-Type B Cable length: 5m (max.) Rear Communication port - remote PC (RS485) Connection: Multidrop (max. 32 relays) Cable type: Twisted pair Cable length: 1200m (max.) 190

192 Connector: Isolation: Transmission rate: Rear Communication port (Ethernet) 100BASE-TX 100BASE-FX Binary Inputs Operating voltage Screw terminals 1kVac for 1 min kbps RJ-45 connector SC connector For signal detection Typical 154Vdc (min. 110Vdc) for 220Vdc rating Typical 77Vdc (min. 70Vdc) for 110Vdc rating Typical 33.6Vdc (min. 24Vdc) for 48Vdc rating Typical 16.8Vdc(min. 12Vdc) for 24Vdc rating For trip circuit supervision 88V for 220/250Vdc rating 38.4Vdc for 110Vdc rating 19.2V for 48Vdc rating 9.6V for 24Vdc rating Binary Outputs Number Ratings model 410 and 411; BO#1 and #2 model 412: BO#1,#2,#5 and #6 other BOs Durability: 4 or 8 (excluding Relay Fail contact) Make and carry: 5A continuously Make and carry: 5A continuously Contact : 0.4A 250Vdc, 8A 380Vac, 3040VA, 150W Make and carry: 30A, 250Vdc for 0.5s (L/R=40ms) Break: 0.1A, 250Vdc (L/R=40ms) Make and carry: 4A continuously Contact: 0.2A 110Vdc, 8A 250Vac, 2000VA, 240W Loaded contact: 1,000 operations Unloaded contact: 10,000 operations Pickup time: Reset time: Mechanical design Weight Width Height Depth Case color Installation Less than 15ms Less than 10ms 1.5kg for model 410A and 411A 1.8kg for model 412A 149mm for model 410A and 411A 223mm for model 412A 177mm 168mm Munsell No. 10YR8/0.5 Flush mounting with attachment kits 191

193 ENVIRONMENTAL PERFORMANCE Test Standards Details Atmospheric Environment Temperature IEC /2 IEC Operating range: -20 C to +60 C. Storage / Transit: -25 C to +70 C. Humidity IEC days at 40 C and 93% relative humidity. Enclosure Protection IEC IP52 (front), IP20 (rear), IP40 (top) Mechanical Environment Vibration IEC Response - Class 1 Endurance - Class 1 Shock and Bump IEC Shock Response Class 1 Shock Withstand Class 1 Bump Class 1 Seismic IEC Class 1 Electrical Environment Dielectric Withstand IEC IEEE C kVrms for 1 minute between all terminals and earth. 2kVrms for 1 minute between independent circuits. 1kVrms for 1 minute across normally open contacts. High Voltage Impulse IEC Three positive and three negative impulses of 5kV(peak) for CT, Power Supply Unit (PSU), BI and BO circuits; between terminals and earth, and between independent circuits 3kV (peak) for RS485 circuit; between terminals and earth 3kV (peak) for BO circuit; across normally open contacts 1.2/50µs, 0.5J between all terminals and between all terminals and earth. Electromagnetic Environment High Frequency Disturbance / Damped Oscillatory Wave Electrostatic Discharge Radiated RF Electromagnetic Disturbance IEC Class 3, IEC IEEE C IEC Class 3, IEC IEC Class 3, IEC MHz 2.5kV to 3kV (peak) applied to all ports in common mode. 1MHz 1.0kV applied to all ports in differential mode. 6kV contact discharge, 8kV air discharge. Field strength 10V/m for frequency sweeps of 80MHz to 1GHz and 1.7GHz to 2.2GHz. Additional spot tests at 80, 160, 450, 900 and 1890MHz. Fast Transient Disturbance IEC Class A, IEC , IEEE C Surge Immunity IEC , IEC kV, 2.5kHz, 5/50ns applied to all inputs. 1.2/50µs surge in common/differential modes: HV, PSU and I/O ports: 2kV/1kV (peak) RS485 port: 1kV (peak) Conducted RF Electromagnetic Disturbance Power Frequency Disturbance IEC Class 3, IEC IEC Class A, IEC Vrms applied over frequency range 150kHz to 100MHz. Additional spot tests at 27 and 68MHz. 300V 50Hz for 10s applied to ports in common mode. 150V 50Hz for 10s applied to ports in differential mode. Not applicable to AC inputs. 192

194 Test Standards Details Conducted and Radiated Emissions IEC , EN Class A, IEC European Commission Directives 89/336/EEC 73/23/EEC Conducted emissions: 0.15 to 0.50MHz: <79dB (peak) or <66dB (mean) 0.50 to 30MHz: <73dB (peak) or <60dB (mean) Radiated emissions (at 10m): 30 to 230MHz: <40dB 230 to 1000MHz: <47dB Compliance with the European Commission Electromagnetic Compatibility Directive is demonstrated according to generic EMC standards EN and EN Compliance with the European Commission Low Voltage Directive is demonstrated according to product safety standard EN