SPAJ 160 C. Capacitor protection relay SPAJ 160 C. User s manual and Technical description V ~ V 3I > 3I < f n 2 > TRIP.

Transcription

1 SPAJ 60 C Capacitor protection relay User s manual and Technical description I n = A 5A ( I ) I n = A 5A ( I ) f n = 50Hz 60Hz 5 3I > I 3I < I L I L I L3 I c IRF SPAJ 60 C V ~ V SPCJ 4D40 REGISTERS OPERATION IND I L / I n I L / I n I L3 / I n t ( I a >) [%] t ( I b >) [%] I c / I n [ %] t ( I > )[ %] t ( I > )[ %] t ( I < )[ %] U aux I a >ALARM I b >START I b >TRIP I > ALARM I > START I > TRIP I < OPERATION RECONN. INH. EXTERN. TRIP I b > / I n k I a > [%I t a [ min ] b ] I < / I < [ s] n t t rec [ min ] I > [% I n ] t [ s] I > [% I n ] k RESET STEP I [ cs % I n ] SGF SGB SGR TRIP 07A RS 4 Ser.No. 08A SPCJ 4D40

2 MRS MUM EN Issued Modified Version F Checked MK Approved OL SPAJ 60 C Capacitor protection relay Data subject to change without notice Contents Characteristics... Area of application (modified 997-0)... 3 Description of operation (modified 996-)... 5 Connection diagram (modified 00-0)... 7 Connections... 9 Control signals between modules... 0 Abbreviations of signal names.... Operation indicators... Power supply and output relau module... 4 Technical data (modified 00-04)... 5 Maintenance and repairs... 8 Spare parts... 8 Ordering numbers... 8 Dimensions and instructions for mounting... 9 Information required with order... 9 The complete user's manual also includes the following documents: General characteristics of D-type relay module Capacitor bank relay module type SPCJ 4D40 MRS MUM EN MRS MUM EN Characteristics One-, two- and three-phase overload stage with definite time charcteristic One-, two- and three-phase overload stage with inverse (ANSI) time charcteristic Phase unbalance protection stage with definite time charcteristic Phase unbalance protection stage with inverse time charcteristic Undercurrent protection for detection of capacitor disconnection. Reconnection time with wide setting range Compensation for natural unbalance current Fully selectable output relay configuration Easy selection of appropriate operational scheme for various applications Numerical display of setting values, current measured values, memorized values etc. Continuous self-supervision of hardware and software Optical serial communication over the SPA bus provides access from a higher level central unit to all set and measured values and to memorized fault values. Various events can also be selected to be automatically read by a control data communicator and printed out.

3 Area of application (modified 97-0) The main application area for the relay is to protect capacitor banks intended for reactive power compensation and filtering of the harmonics. The capacitor banks are usually protected against overload produced by harmonic currents and overvoltage caused by internal faults in the bank. A protection against reconnection of a charged capacitor to a live network should also be included. All these functions can be found in SPAJ 60 C. An earth-fault and overcurrent protection is often used for selective network protection. In this case an overcurrent and earth-fault protection relay from the SPACOM-family can be connected to the same current transformer as SPAJ 60 C. Application examples 3I>> I eg. SPAA 34 C 3I/U> I/U< IN-N SPAJ 60 C Fig.. Protection of a capacitor bank connected as a double-star in a distribution network with three-phase current measurement. I>> I e.g. SPAA 0 C or SPAA C I/U> I/U< IN-N SPAJ 60 C Fig.. Protection of a capacitor bank connected as a double-star in a distribution network with two-phase current measurement. 3

4 3I>> I e.g. SPAJ 40 C or SPAJ 4 C 3I/U> I/U< IN-N SPAJ 60 C Fig.3. Protection of a capacitor bank connected as a double-star in an industrial network with two- or three-phase current measurement. In this case a non-directional earth-fault protection is used. I>> I e.g. SPAA 0 C or SPAA C I/U> I/U< IN-N SPAJ 60 C Fig.4. Protection of a one-phase bridge connected capacitor filter bank. 4

5 Description of operation (modified 996-) The protective relay measures the phase currents of the capacitor bank one-, two- or three phase. The currents are internally transformed by the relay to signals that will be directly proportionally to the voltages over the bank. The relay is also measuring the unbalance current that may arise in a capacitor bank. The input current is in this case measured by a current transformer connected between the starpoints in a double-star connection according to fig. 5 or between the branches in a single-phase bridge connection according to fig. 6. Fig. 5. Fig. 6. The protective relay is a multifunction type of relay and includes functions for overload protection, unbalance protection and undercurrent protection combined with reconnection inhibit to prevent reconnection of a charged capacitor bank to a live network. The overload protection is mainly a overvoltage protection. It measures peak values with the measured harmonics up to and including the 3th order. The overload protection includes two stages. One stage is alarming and the other is for tripping. The trip stage is based on inverse time characteristic and the inverse curve is based on ANSI/IEEE C37.99 and IEC recommendations for the capacitor banks voltage withstand related to time. The gradient of the curve can be changed by a k- factor within the range The alarm stage has a definite time characteristic. Both the starting value and the operating time are available for setting. To match the relay to the rated current of the capacitor bank a correction setting value is available. By using this setting value it is possible to multiply the signal from the current transformers by a factor within the range The undercurrent protection, operating with definite time characteristic, is detecting a possible undercurent in the capacitor bank. When all three phase currents are opeating below the starting value and the operating time has elapsed the output alarm will be activated. The reconnection inhibit function connected to the undercurrent protection will be activated at the same time. The reconnection inhibit signal will be active until the set time has elapsed and is used to inhibit the reconnection of a charged capacitor bank to a live network. Both the starting value and the operating time for the undercurrent protection and the setting time for the reconnection inhibit are available for setting. The unbalance protection measures only the basic frequency component of the current. The protection function includes two stages of which one is alarming and the other tripping. To improve unbalance detection in the capacitor bank the relay is provided with a settable compensation of natural unbalance. Both the amplitude and phase angle are compensated. The trip stage is based on inverse time characteristic and the curve has similar gradient to the normal inverse curve.the starting value can be set within the range...80% of the nominal input current of the relay. The gradient of the curve can be changed by the k-factor within the range 0... It is possible to increase the inverse characteristic time by a factor 0 by setting switch SGF/6 to position. The signal stage has a definite time characteristic. Both the starting value and the operating time are available for setting. By using the unbalance compensation natural unbalance currents within the range...0% of the relays nominal input current can be compensated. By appropriate programming of the output relay matrix, various starting, alarm or reconnection inhibit signals are received as contact functions. This contact information is used e.g. for the blocking of co-operating protective relays located upstream, for connection to annunciation units etc. 5

6 The capacitor bank relay contains one external logic control input, which is activated by a control signal of the auxiliary voltage level. The influence of the control input on the relay is determined by programming switches of the measuring module. The control input can be used either for blocking one or more of the protective stages, for carrying out an external trip order, for inhibiting a reconnection attempt or/ and for resetting a latched output relay in the manual reset mode. The protective relay is provided with a manmachine interface on the front panel. The manmachine interface shows relay activation's, measured values, maximum value registrations, starting counters, time counters and setting values. All changes of setting values can be made by using the push-buttons on the front panel. Through the serial bus the man-machine communication can be obtained either by using a PC with a setting tool program, a SCS local control system or a microscada remote control system. IL TRIP OVERLOAD PROTECTION SIGNAL IL COMPENSATION FOR NATURAL PHASE UNBALANCE SIGNAL IL3 CAPACITOR BANK PROTECTION WITH ALARM/TRIP STAGE 5N START I UNDERCURRENT DETECTION FOR RECONNECTION INHIBIT 37 RECONNECTION ENABLE IRF CONTROL INPUT BS RECONNECTION INHIBIT TIMER 6 SERIAL I/O SERIAL COMMUNICATION Fig. 7. Checking functions of the capacitor bank overload and unbalance prot. relay type SPAJ 60 C. 6

7 Connection diagram (modified 00-0) L L L I I 0 + Rx Tx CONTROL INPUT BS (~) Uaux - (~) RECONNECTION IRF ENABLE START SIGNAL SIGNAL TRIP SPA-ZC_ SERIAL PORT 5 A A 5 A A 5 A A 5 A A _ U3 + - U SPTU_R F E D C TS SS SS SS3 TS TRIP R SGB/6 SGB/7 B A SGB_/ IRF 3Ia> 3Ib> T8 SGR/ SGR/ SGR/3 SGR/4 SGR/ SGR/ SGR/3 SGR/4 SGR/5 SGR/6 SGR/7 SGR/5 SGR/6 SGR/7 SGR/8 SGR/8 T SGF/ T T3 SGB_/ I I T4 T5 SGF/ T6 SGB_/3 SGB_/4 3I< RECONN.INHIBIT T7 SGB_/5 SGB_/8 EXTERNAL TRIP RELAY RESET T9 SPAJ 60 C I/O U SPCJ 4D40 Fig. 8. Complete connection diagram for the capacitor bank protection relay SPAJ 60 C with all the relay matrix and blocking/control input programming switches shown. U aux Auxiliary voltage A, B, C, D, E, F Output relays IRF Self-supervision SGB Switchgroup for the configuration of the blocking and control signals TRIP Trip output relay, output SIGNAL Signal on tripping SIGNAL Signal on tripping START Signal on starting RECONN. INHIBIT Connection inhibited in fault conditions U Capacitor bank protection relay module SPCJ 4D40 U Power supply and output relay module SPTU 40 R or SPTU 48 R with a normally open trip contact U3 Input module SPTE 4E3 Rx Tx Serial communication interface T...T9 Operation indications SPA-ZC- Bus connection module 7

8 Rx Tx Made in Finland Fig. 9. Rear view of relay SPAJ 60 C 8

9 Connections Terminal Function - Phase current I L, 5 A -3 Phase current I L, A 4-5 Phase current I L, 5 A 4-6 Phase current I L, A 7-8 Phase current I L3, 5 A 7-9 Phase current I L3, A 5-6 Phase unbalance current 5 A 5-7 Phase unbalance current A 6-6 Auxiliary supply voltage. At d.c. auxiliary supply voltage the positive lead is connected to terminal Protective earth 0- Blocking- and control input. Can be used as an external blocking input inhibiting overload, phase unbalance or undercurrent protection. As an control input it can be used for an external trip signal, for unlatching the trip relay and for the reconnection inhibit relay. The function is selected with SGB-switches in the protection relay module Output relay A is a heavy duty relay which provides CB tripping commands. A latching function of the output relay A can be selected by means of switches SGB/6 and SGB/7. Switch SGB/6 gives a latching function after an overload tripping. Switch SGB/7 provides a latching function after a phase unbalance trip. The latched output relay can be reset locally or by remote control. The undercurrent unit can be made tripping with switch SGF/. Also the overload stage I a > can be made tripping with switch SGF/ The signals to be routed to output relays B and C are selected with switches of 80-8 switchgroup. The signals to be routed to output relays B and C are selected with switches of switchgroup SGR and switches...8 of switchgroup SGR of the measuring module. Normally overload stage I b > start signal is linked to relay C and the overload stage I a > alarm signal is linked to output relay B The signals to be routed to the output relay D are selected by means of switches...4 of switchgroup SGR. Switch SGR/ links the overload I a > alarm, switch SGR/ links the oveload I b > start, switch SGR/3 links the phase unbalance alarm of stage I > and switch SGR/4 links the phase unbalance start signal of stage I > to output relay D Output relay E is a heavy duty output relay capable of controlling a circuit breaker. Relay E is normally used for controlling the reconnection of the capacitor bank. If the reconnection inhibit signal is active the output relay E prevents a reconnection attempt of the capacitor bank. This also applies to a condition where the protective relay is out of auxiliary voltage or the relay is faulty Output relay F operates as an self-supervision output relay. Under normal conditions the relay is operated and the contact gap 70-7 is closed. If a fault is detected by the self-supervision system, or if the auxiliary supply fails, the output relay drops off, providing an alarm signal by closing the NO contact 7-7. The relay is interfaced with the SPA serial communication bus through a 9-pole, D-type subminiature connector located at the rear panel of the relay. By means of the bus connection modules SPA-ZC or SPA-ZC7 the relay can be linked to the serial bus and further to a control data communicator, e.g. SACO 48D4 or SRIO 500/000M. 9

10 Control signals between the modules The figure below schematically illustrates how the closing and alarm signals are connected between measuring and output relay module. IL IL IL3 BS BS RRES I SGB..3 / SGB...3 / SGB...3 / 3 SGB...3 / 4 SGB...3 / 5 SGB...3 / 6 SGB...3 / 7 SGB...3 / 8 Ia> ta 70 ms Ib> k I> t Ics COMP Ic I> 70 ms k I< t< 00ms t rec RECONNECTION INHIBIT EXTERNAL TRIP TRIP INDICATOR RESET TRIP INDICATOR + OUTPUT RELAY RESET COMPLETE RELAY RESET SGR / SGR / SGR / 5 SGF / SGR / SGR / SGR / 3 SGR / 6 SGR / 3 SGR / 4 SGR / 4 SGR / 5 SGR / 6 SGR / 7 SGR / 7 SGR / 8 SGF / SGR / 8 SGB / 6 SGB / 7 RESET+. RESET+. RESET TRIP SPCJ 4D40 TS SS AR SS SS3 AR TS IRF RECONN. INHIBIT START SIGNAL SIGNAL TRIP SPTU_R F E D C B A Fig. 0. Control signals between the modules of the capacitor bank relay SPAJ 60 C. 0 The functions of the blocking, starting and tripping signals are selected with the switches of switchgroups SGF, SGB...3 and SGR... The checksums of the switchgroups, are found in the setting menu of the measuring relay module. The functions of the different switches are explained in the user's manual of the measuring module SPCJ 4D40.

11 Abbreviations of signal names I L, I L, I L3 Phase currents I Phase unbalance current I c Compensated phase unbalance current BS, BS,RRES External blocking or resetting signals SS Starting Signal SS Starting Signal SS3 Starting Signal 3 TS Tripping Signal TS Tripping Signal AR...3 Auto-Reclose starting signals (not used in SPAJ 60 C) IRF Internal Relay Fault signal SS Starting Signal SGF Switch Groups for functions SGB...3 Switch Groups for blockings SGR... Switch Groups for relay configuration Rx/Tx Receiver/Transmitter channel

12 Operation indicators 07A I n = A 5A ( I ) I n = A 5A ( I ) SPCJ 4D40 REGISTERS OPERATION IND RS 4 SPAJ 60 C V ~ V I / I n L I / I n L 3 I / I n L3 4 t ( I >) [%] a t ( I b >) [%] I c / I n [ %] t ( I > )[ %] t ( I > )[ %] t ( I < )[ %] Ser.No. f n = 50Hz 60Hz U aux I a >ALARM I b >START I b >TRIP I > ALARM I > START RECONN. INH. EXTERN. TRIP A) The indicator TRIP is lit when one of the protection stages operates. When the protection stage returns, the red indicator remains alight. B) If the display is dark when one of the protection stages I a > or I b > request for tripping, the faulty phase is indicated with a yellow LED. If, for instance, the TRIP indicator glows red, 5 I > TRIP I < OPERATION 08A 3I > I 3I < I I I I L L L3 IRF c I b > / I k I a > [%I t a [ min ] b ] I < / I < [ s] n t t rec RESET STEP I > [% I n ] t [ s] I > [% I n ] k I [ cs % I n ] SGF SGB SGR n [ min ] TRIP SPCJ 4D40 and the indicators I L and I L are ON at the same time, overcurrent has occurred on phase L and L. C) Besides being a code number at data presentation, the leftmost red digit in the display serves as a visual operation indicator. An operation indicator is recognized by the fact that the red digit alone is switched on. The operation indication from a start or the reconnection inhibit is always replaced by a new operation indication. On the other hand an operation indication from a stage connected to the trip relay A can not be replaced by a new operation indication. In order to enable reading of actual current levels etc. when reconnection time is running, it is possible to acknowledge the indication 8 while the unit is still activated. The same applies to the external trip indication 9. In these cases the indications are memorized and reappear when the display is dark. Operation indicator 8 is automatically reset when the capacitor bank is reconnected. The following table, named OPERATION IND. on the relay front panel, is a key to the operation indicator code numbers used. Indication Explanation I a > alarm = The overload stage I a > has given an alarm I b > start = The overload stage I b > has started 3 I b > trip = The overload stage I b > has tripped 4 I > alarm = The stage I > has given an alarm 5 I > start = The stage I > has started 6 I > trip = The stage I > has tripped 7 I< operation = The stage I< has operated 8 t rec = The reconnection inhibit is active, indication is self-reset 9 EXT.TRIP = A trip from an external relay has been carried out via the relay

13 D) The operation indicator on the display and the "TRIP" indicator persist when the protective stage returns to normal. The indicators are reset by pushing the RESET/STEP push-button. Further, the indicators may be reset via the external control input 0- by applying a control voltage to the input, provided that the switch SGB/8 is in position. The basic protective relay functions are not depending on the state of the operation indicators, i.e. reset or non-reset. The relay is permanently operative. If stage I b > or I > starts, but no tripping occurs because the energizing quantity goes below the starting level before the delay circuit times out, the starting indications are automatically switched off. However, by means of the switches SGF/3...4 the starting indications may be persistent which means that they are to be reset by pushing the RESET/STEP push-but- ton. The persistent indications are obtained through the following programming: Switch SGF/3 = Starting indication on I b > persistent Switch SGF/4 = Starting indication on I > persistent On delivery from factory the switches SGF/3...4 = 0 E) The self-supervision alarm indicator IRF indicates that the self-supervision system has detected a permanent fault. The indicator activates with a red light about minute after the fault has been detected. At the same time the plug-in module delivers a signal to the self-supervision system output relay of the protection assembly. Additionally, in most cases, a fault code showing the nature of the fault appears on the display of the module. The fault code, consists of a red figure one and a green code number, this cannot be erased from the display of the module by resetting. When a fault occurs, the fault code should be recorded and stated when service, is ordered. 3

14 Power supply and output relay module To be able to operate the relay needs a secured auxiliary voltage supply. The power supply module forms the voltages required by the measuring relay module and the auxiliary relays. The withdrawable power supply and output relay module is located behind the system front panel, which is fixed by means of four cross-slotted screws. The power supply and output relay module contains the power supply unit, all output relays, the control circuits of the output relays and the electronic circuitry of the external control signals. The power supply and output relay unit can be withdrawn after removing the system front panel. The primary side of the power supply module is protected with a fuse, F, located on the PCB of the module. The fuse size is A (slow). The power supply unit is a transformer connected, i.e. galvanically isolated primary and secondary side, flyback-type dc/dc converter. It forms the dc secondary voltages required by the measuring relay module; that is +4 V, ± V and +8 V. The output voltages ±V and +4 V are stabilized in the power supply module, while the +5 V logic voltage required by the measuring relay module is formed by the stabilizer of the relay module. Uaux V ac & dc V dc A slow +8V +V -V +4V Unstabilized logics voltage Operation amplifier voltage Output relay coil voltage Fig.. Voltage levels of the power supply module. A green LED indicator Uaux on the system front panel is illuminated when the power supply module is in operation. The supervision of the voltages supplying the electronics is placed in the measuring module. If a secondary voltage deviates from its rated value by more than 5 %, a selfsupervision alarm will be established. An alarm is also received when the power supply module is withdrawn from the relay case, or when the auxiliary power supply to the relay is interrupted. There are two versions of the power supply and output relay modules available. For both types, the secondary sides and the relay configurations are identical, but the input voltage ranges differ. Insulation test voltage between the primary and the secondary side and the protective earth. kv, 50 Hz, min Rated power P n 5 W Voltage ranges of the power supply modules: - SPTU 40 R U aux = V ac/dc - SPTU 48 R U aux = V dc (on request) The module SPTU 40 R can be used with both ac and dc voltages. Module SPTU 48 R is designed for dc supply only. The auxiliary voltage range of the power supply module of the relay assembly is indicated on the system front panel. 4

15 Technical data (modified 00-04) Energizing inputs Phase and neutral current inputs, terminals -3, 4-6, 7-9, 5-7 -, 4-5, 7-8, 5-6 Rated current I n A 5 A Thermal withstand capability - continuously 4 A 0 A - for s 00 A 500 A Dynamic current withstand, half-wave value 50 A 750 A Input impedance < 00 mω < 0 mω Phase current monitoring range x I n Phase unbalance current monitoring range 0...% I n Rated frequency 50/60 Hz Output contact ratings Reconnection enable and trip contact Terminals 65-66, Rated voltage 50 V dc/ac - Carry continuously 5 A - Make and carry for 0.5 s 30 A - Make and carry for 3.0 s 5 A - Breaking capacity for dc, when the control circuit time-constant L/R < 40ms, at 48/0/0 V dc control circuit voltage 5 A / 3 A / A Start and signalling contacts Terminals , 68-69, 77-78, Rated voltage 50 V dc/ac - Carry continuously 5 A - Make and carry for 0.5 s 0 A - Make and carry for 3.0 s 8 A - Breaking capacity for dc, when the control circuit time-constant L/R < 40ms, at 48/0/0 V dc control circuit voltage A / 0.5A / 0.5A External control inputs Blocking and command inputs 0- External control voltage level V dc or V ac Typical control current of input circuit ma Power supply and output relay module Supply and relay module, type SPTU 40 R Supply and relay module, type SPTU 48 R Power consumption under quiescent/operating conditions V dc/ac V dc (on request) 4 W / 6 W 5

16 Protection units of module SPCJ 4D40 Overload stage I b > Starting current I b > x I n Starting time <80 ms Operation characteristic ANSI inverse Time multiplier k Resetting time <00 ms Drop-off/pick-up ratio >0.95 Operation time accuracy (k =.0 and I b > = x I n ) ±0% of theoretical value or ±50 ms Operation accuracy ±3% of set value Shortest possible trip time ~00 ms Overload stage I a > Starting current I a > % x I b > Operating time min Resetting time <50 ms Drop-off/pick-up ratio >0.95 Operation time accuracy ±% of set value Operation accuracy ±3% of set value Undercurrent stage I< Starting current I< x I n Operating time s Reconnection time min Pulse shaped tripping signal, pulse length ~00 ms Pick-up/drop-off ratio <. Operation time accuracy ±% of set value or ±75 ms Operation accuracy ±3% of set value within range x I n Phase unbalance I >, Stage Starting current I > % I n *) Operating time s Resetting time <00 ms Drop-off/pick-up ratio >0.90 Operation time accuracy ( I cs = 0) ±% of set value or ±75 ms Operation accuracy ( I cs = 0) ±3% of set value within range % I n Phase unbalance I >, Stage Starting current I > % I n *) Starting time <70 ms Operation characteristic Inverse time Time multiplier k Resetting time <00 ms Drop-off/pick-up ratio >0.90 Operation time accuracy of theoretical characteristic ( I cs = 0) 7.5% or ±35 ms Operation accuracy ( I cs = 0) ±3% of set value Shortest possible trip time ~00 ms Setting of compensation Operation accuracy % I n <3% of I n *) minimum recommended: 3.0% I n 6

17 Data transmission Transmission mode Fibre optic serial bus Data code ASCII Data transfer rate, selectable 4800 Bd or 9600 Bd Electrical/optical bus connection module powered from the host relay - for plastic core cables SPA-ZC BB - for glass fibre cables SPA-ZC MM Electrical/optical bus connection module powered from the host relay or an external power source - for plastic core cables SPA-ZC 7 BB - for glass fibre cables SPA-ZC 7 MM Insulation Tests *) Dielectric test IEC Impulse voltage test IEC Insulation resistance measurement IEC kv, 50 Hz, min 5 kv,./50 µs, 0.5 J >00 MΩ, 500 Vdc Electromagnetic Compatibility Tests *) High-frequency ( MHz) burst disturbance test IEC common mode.5 kv - differential mode.0 kv Electrostatic discharge test IEC and IEC contact discharge 6 kv - air discharge 8 kv Fast transient disturbance test IEC and IEC power supply 4 kv - I/O ports kv Environmental conditions Specified ambient service temperature range o C Temperature influence on the operating values of the relay over the specified ambient service temperature range < 0. %/ o C Long term damp heat withstand according to IEC < 95 % at 40 o C for 56 d/a Transport and storage temperature range o C Degree of protecting by enclosure of the relay case as per IEC 6059 when panel mounted IP 54 Mass of the relay 3.5 kg *) The tests do not apply to the serial port, which is used exclusively for the bus connection module. 7

18 Maintenance and repair When the synchrocheck relay is operating under the conditions specified in the section "Technical data", the relay is practically maintenancefree. The relay modules include no parts or components subject to an abnormal physical or electical wear under normal operating conditions. If the environmental conditions at the relay operating site differ from those specified, as to temperature, humidity, or if the athmosphere around the relay contains chemically active gases or dust, the relay should to be visually inspected in association with the relay secondary test or whenever the relay modules are withdrawn from the case. At the visual inspection the following things should be noted: - Signs of mechanical damage on the relay modules, contacts and relay case - Accumulation of dust inside the relay cover or case; remove by flowing air carefully - Rust spots or signs of erugo on terminals, case or inside the relay On request, the relay can be given a special treatment for the protection of the printed circuit boards against stress on materials, caused by abnormal environmental conditions. If the relay fails in operation or if the operating values remarkable differ from those of the relay specifications, the relay should be given a proper overhaul. Minor measures can be taken by personnel from the instrument work-shop of the customer's company, e.g. replacement of auxiliary relay modules. All major measures involving overhaul of the electronics are to be taken by the manufacturer. Please contact the manufacturer or his nearest representative for further information about checking, overhaul and recalibration of the relay. Note! Static relays are measuring instruments and should be handled with care and protected against moisture and mechanical stress, especially during transport. Spare parts Capacitor bank protection relay module SPCJ 4D40 Power and output relay module U aux = V ac/dc SPTU 40 R for NO trip contact U aux = V dc SPTU 48 R for NO trip contact Relay box, complete with input module SPTK 4E3 Input module as separate part SPTE 4E3 Bus connection module SPA-ZC 7_ or SPA-ZC _ Ordering numbers Capacitor bank protection without testswitch SPAJ 60 C RS AA, CA, DA, FA Capacitor bank protection with testswitch type RTXP 8 SPAJ 60 C RS AA, CA, DA, FA The last letters of the ordering number indicate the rated frequency f n and the auxiliary voltage range U aux of the relay as follows: AA equals f n = 50 Hz and U aux = V ac/dc CA equals f n = 50 Hz and U aux = V ac/dc DA equals f n = 60 Hz and U aux = V ac/dc FA equals f n = 60 Hz and U aux = V ac/dc Power supply and output relay modules: SPTU 40 R SPTU 48 R RS AA RS BA 8

19 Dimensions and instructions for mounting The relay is housed in a normally flush-mounted case. The relay can also be arranged for semiflush mounting with the use of a 40 mm, 80 mm or 0 mm raising frame, which reduces the depth behind the panel by the same dimension. The type designation of the raising frames are SPA-ZX for the 40 mm frame, SPA-ZX for the 80 mm frame and SPA-ZX 3 for the 0 mm frame. A surface mounting case SPA-ZX 0 is also available. The relay case is made of an extruded, beige aluminium profile. A cast aluminium alloy mounting frame with rubber gasket provides a degree of protection by enclosure to IP 54 between the relay case and the panel surface when the relay is panel mounted. The relay case is completely with a hinged gasketed, clear, UV-stabilized polycarbonate cover with a sealable fastening screw. The degree of protection by enclosure of the cover is also IP 54. A terminal strip and two multipole connectors are mounted on the back of the relay case to facilitate all input and output connections. To each heavy duty terminal, i.e. measuring input, power or closing output, one 6 mm, one 4 mm or one or two.5 mm wires can be connected. No terminal lugs are needed. The three signalling inputs are available on a six pole detachable connector and the serial bus connection is using a 9-pin D-type connector ± a b 39 ± 6 36 Panel cut-out Raising frame SPA-ZX SPA-ZX SPA-ZX 3 a b Information required with order Example. Quantity and type designation 5 pcs SPAJ 60 C. Ordering number RS AA 3. Rated frequency f n = 50 Hz 4. Auxiliary voltage U aux = 0 V dc 5. Accessories 5 pcs matching modules SPA-ZC MM pcs fibre optical cables SPA-ZF MM Special requirements - 9

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21 General characteristics of D-type relay modules User s manual and Technical description Fastening screw Indicators for measured quantities 3 I > I I L I L I L3 I o IRF Relay symbol Self-supervision alarm indicator (Internal Relay Fault) Display, + 3 digits / I > I n t [] > s k / I >> I n RESET STEP Reset / Step push-button Indicators for setting parameters t >>[ s] / I o > I n to > [] s k o / I o>> I n Indicators for switchgroups SGF, SGB and SGR t [] o >> s SGF SGB Programming push-button SGR TRIP Trip indicator Fastening screw 879B SPCJ 4D9 Module type designation

22 MRS MUM EN Issued Version A (replaces 34 SPC 3 EN) Checked JH Approved TK General characteristics of D type relay modules Data subject to change without notice Contents Front panel lay-out... Control push buttons... 3 Display... 3 Display main menu... 3 Display submenus... 3 Selector switchgroups SGF, SGB, SGR... 4 Settings... 4 Setting mode... 4 Example : Setting of relay operation values... 7 Example : Setting of relay switchgroups... 9 Recorded information... Trip test function... Example 3: Forced activation of outputs... 3 Operation indicators... 5 Fault codes... 5

23 Control push-buttons The front panel of the relay module contains two push buttons. The RESET / STEP push button is used for resetting operation indicators and for stepping forward or backward in the display main menu or submenus. The PRO- GRAM push button is used for moving from a certain position in the main menu to the corresponding submenu, for entering the setting mode of a certain parameter and together with the STEP push button for storing the set values. The different operations are described in the subsequent paragraphs in this manual. Display The measured and set values and the recorded data are shown on the display of the protection relay module. The display consists of four digits. The three green digits to the right show the measured, set or recorded value and the leftmost red digit shows the code number of the register. The measured or set value displayed is indicated by the adjacent yellow LED indicator on the front panel. When a recorded fault value is being displayed the red digit shows the number of the corresponding register. When the display functions as an operation indicator the red digit alone is shown. When the auxiliary voltage of a protection relay module is switched on the module initially tests the display by stepping through all the segments of the display for about 5 seconds. At first the corresponding segments of all digits are lit one by one clockwise, including the decimal points. Then the center segment of each digit is lit one by one. The complete sequence is carried out twice. When the test is finished the display turns dark. The testing can be interrupted by pressing the STEP push button. The protection functions of the relay module are alerted throughout the testing. Display main menu Any data required during normal operation are accessible in the main menu i.e. present measured values, present setting values and recorded parameter values. The data to be shown in the main menu are sequentially called up for display by means of the STEP push button. When the STEP push button is pressed for about one second, the display moves forward in the display sequence. When the push button is pressed for about 0.5 seconds, the display moves backward in the display sequence. From a dark display only forward movement is possible. When the STEP push button is pushed constantly, the display continuously moves forward stopping for a while in the dark position. Unless the display is switched off by stepping to the dark point, it remains lit for about 5 minutes from the moment the STEP push button was last pushed. After the 5 minutes' time-out the dispaly is switched off. Display submenus Less important values and values not very often set are displayed in the submenus. The number of submenus varies with different relay module types. The submenus are presented in the description of the concerned protection relay module. A submenu is entered from the main menu by pressing the push button for about one second. When the push button is released, the red digit of the display starts flashing, indicating that a submenu has been entered. Going from one submenu to another or back to the main menu follows the same principle as when moving from the main menu display to another; the display moves forward when the STEP push button is pushed for one second and backward when it is pushed for 0.5 seconds. The main menu has been re-entered when the red display turns dark. When a submenu is entered from a main menu of a measured or set value indicated by a LED indicator, the indicator remains lit and the address window of the display starts flashing. A submenu position is indicated by a flashing red address number alone on the dispaly without any lit set value LED indicator on the front panel. 3

24 Selector switchgroups SGF, SGB and SGR Part of the settings and the selections of the operation characteristic of the relay modules in various applications are made with the selector switchgroups SG_. The switchgroups are software based and thus not physically to be found in the hardware of the relay module. The indicator of the switchgroup is lit when the checksum of the switchgroup is shown on the display. Starting from the displayed checksum and by entering the setting mode, the switches can be set one by one as if they were real physical switches. At the end of the setting procedure, a checksum for the whole switchgroup is shown. The checksum can be used for verifying that the switches have been properly set. Fig. shows an example of a manual checksum calculation. When the checksum calculated according to the example equals the checksum indicated on the display of the relay module, the switches in the concerned switchgroup are properly set. Switch No Pos. Weigth Value x = 0 x = 0 3 x 4 = 4 4 x 8 = 8 5 x 6 = x 3 = 0 7 x 64 = x 8 = 0 Checksum = 93 Fig.. Example of calculating the checksum of a selector switchgroup SG_. The functions of the selector switches of the different protection relay modules are described in detail in the manuals of the different relay modules. Settings Most of the start values and operate times are set by means of the display and the push buttons on the front panel of the relay modules. Each setting has its related indicator which is lit when the concerned setting value is shown on the display. In addition to the main stack of setting values most D type relay modules allow a second stack of settings. Switching between the main settings and the second settings can be done in three different ways: ) By command V50 over the serial communication bus ) By an external control signal BS, BS or RRES (BS3) 3) Via the push-buttons of the relay module, see submenu 4 of register A. Setting mode Generally, when a large number of settings is to be altered, e.g. during commissioning of relay systems, it is recommended that the relay settings are entered with the keyboard of a personal computer provided with the necessary software. When no computer nor software is available or when only a few setting values need to be altered the procedure described below is used. The registers of the main menu and the submenus contain all parameters that can be set. The settings are made in the so called setting mode, which is accessible from the main menu or a submenu by pressing the push button, until the whole display starts flashing. This position indicates the value of the parameter before it has been altered. By pressing the push button the programming sequence moves forward one step. First the rightmost digit starts flashing while the rest of the display is steady. The flashing digit is set by means of the STEP push button. The flashing cursor is moved on from digit to digit by pressing the push button and in each stop the setting is performed with the STEP push button. After the parameter values have been set, the decimal point is put in place. At the end the position with the whole display flashing is reached again and the data is ready to be stored. A set value is recorded in the memory by pressing the push buttons STEP and simultaneously. Until the new value has been recorded a return from the setting mode will have no effect on the setting and the former value will still be valid. Furthermore any attempt to make a setting outside the permitted limits for a particular parameter will cause the new value to be disqualified and the former value will be maintained. Return from the setting mode to the main menu or a submenu is possible by pressing the push button until the green digits on the display stop flashing. 4

25 NOTE! During any local man-machine communication over the push buttons and the display on the front panel a five minute time-out function is active. Thus, if no push button has been pressed during the last five minutes, the relay returns to its normal state automatically. This means that the display turns dark, the relay escapes from a display mode, a programming routine or any routine going on, when the relay is left untouched. This is a convenient way out of any situation when the user does not know what to do. Before a relay module is inserted into the relay case, one must assure that the module has been given the correct settings. If there however is any doubt about the settings of the module to be inserted, the setting values should be read using a spare relay unit or with the relay trip circuits disconnected. If this cannot be done the relay can be sett into a non-tripping mode by pressing the push button and powering up the relay module simultaneously. The display will show three dashes "- - -" to indicate the nontripping mode. The serial communication is operative and all main and submenues are accessible. In the non-tripping mode unnecessary trippings are avoided and the settings can be checked. The normal protection relay mode is entered automatically after a timeout of five minutes or ten seconds after the dark display position of the main menu has been entered. MAIN MENU SUBMENU SETTING MODE REV. STEP 0,5 s FWD.STEP s STEP 0,5 s s 5 s 5 s Normal status, display off First measuring value Last measuring value Actual setting value Actual setting value REV. STEP 0,5 s FWD.STEP s Main setting value for stage Second setting value for stage INCREASE VALUE STEP 0,5 s MOVE FIGURE OR DECIMAL POINT CURSOR WITH BUTTON s Memorized values etc. STORE NEW SETTING BY PRESSING STEP AND SIMULTANEOUSLY WHEN THE VALUE IS READY AND THE WHOLE DISPLAY IS BLINKING NOTE! IN MOST MENU CHARTS THE SUBMENUS HAVE BEEN DRAWN IN A HORIZONTAL DIRECTION IN ORDER TO GET ALL MAIN AND SUBMENU POSITIONS SHOWN IN THE SAME CHART. Fig.3. Basic principles of entering the main menus and submenus of a relay module. 5

26 MAIN MENU SUBMENUS STEP 0.5 s s Normal status, display off Current on phase L Current on phase L Current on phase L3 Neutral current Io REV. STEP 0.5 s SUBMENUS FWD. STEP s Actual start value I> Main setting value for I> Second setting value for I> Actual operate time t> or multiplier k for stage I> Main setting value for t> or k Second setting value for t> or k R E V. S T E P.5 s M A I N M E N U F W D. S T E P s Actual start value I>> Main setting value for I>> Actual operate time t>> of stage I>> Actual start value Io> Main setting value for Io> Actual operate time to> or multiplier ko Actual start value Io>> Main setting value for Io>> Actual operate time to>> Main setting value for to>> Actual setting of functional switchgroup SGF Actual setting of blocking switchgroup SGB Actual setting of relay switchgroup SGR Main setting value for t>> Main setting value for to> or ko Main setting of SGF checksum Main setting of SGB checksum Main setting of SGR checksum Latest memorized, event (n) Event (n-) value of phase L value of phase L Latest memorized, event (n) Event (n-) value of phase L value of phase L 3 Latest memorized, event (n) Event (n-) value of phase L3 value of phase L3 Second setting value for I>> Second setting value for t>> Second setting value for Io> Second setting value for to> or ko Second setting value for Io>> Second setting value for to>> Main setting of SGF checksum Second setting of SGB checksum Main setting of SGR checksum Event (n-) value of phase L Event (n-) value of phase L Event (n-) value of phase L3 4 Maximum demand current value for 5 minutes Highest maximum demand value found Fig. 4.Example of part of the main and submenus for the settings of the overcurrent and earth-fault relay module SPCJ 4D9. The settings currently in use are in the main manu and they are displayed by pressing the STEP push button. The main menu also includes the measured current values, the registers...9, 0 and A. The main and second setting values are located in the submenus and are called up on the display with the push button. 6

27 Example Operation in the setting mode. Manual setting of the main setting of the start current value I> of an overcurrent relay module. The initial value for the main setting is 0.80 x I n and for the second setting.00 x I n. The desired main start value is.05 x I n. a) Press push button STEP repeatedly until the LED close to the I> symbol is lit and the current start value appears on the display. RESET STEP 5 x s b) Enter the submenu to get the main setting value by pressing the push button more than one second and then releasing it. The red display digit now shows a flashing number, indicating the first submenu position and the green digits show the set value. s c) Enter the setting mode by pressing the PRO- GRAM push button for five seconds until the display starts flashing. 5 s d) Press the push button once again for one second to get the rightmost digit flashing. s e) Now the flashing digit can be altered. Use the STEP push button to set the digit to the desired value. RESET STEP 5 x f) Press the push button to make the middle one of the green digits flash. s g) Set the middle digit with of the STEP push button. RESET STEP x h) Press the push button to make the leftmost green digit flash. s

28 i) Set the digit with the STEP push button. RESET STEP 0 x.05 j) Press the push button to make the decimal point flash. s.05 k) If needed, move the decimal point with the STEP push button. RESET STEP 0 x.05 l) Press the push button to make the whole display flash. In this position, corresponding to position c) above, one can see the new value before it is recorded. If the value needs changing, use the push button to alter the value. s.05 m) When the new value has been corrected, record it in the memory of the relay module by pressing the and STEP push buttons simultaneously. At the moment the information enters the memory, the green dashes flash once in the display, i.e RESET STEP n) Recording of the new value automatically initiates a return from the setting mode to the normal submenu. Without recording one can leave the setting mode any time by pressing the push button for about five seconds, until the green display digits stop flashing. 5 s.05 o) If the second setting is to be altered, enter submenu position of the setting I> by pressing the STEP push button for approx. one second. The flashing position indicator will then be replaced by a flashing number which indicates that the setting shown on the display is the second setting for I>. RESET STEP s.00 Enter the setting mode as in step c) and proceed in the same way. After recording of the requested values return to the main menu is obtained by pressing the STEP push button until the first digit is switched off. The LED still shows that one is in the I> position and the display shows the new setting value currently in use by the relay module. 8

29 Example Operation in the setting mode. Manual setting of the main setting of the checksum for the switchgroup SGF of a relay module. The initial value for the checksum is 000 and the switches SGF/and SGF/3 are to be set in position. This means that a checksum of 005 should be the final result. a) Press push button STEP until the LED close to the SGF symbol is lit and the checksum appears on the display. RESET STEP n x s b) Enter the submenu to get the main checksum of SGF by pressing the push button for more than one second and then releasing it. The red display now shows a flashing number indicating the first submenu position and the green digits show the checksum. s c) Enter the setting mode by pressing the PRO- GRAM push button for five seconds until the display starts flashing. 5 s d) Press the push button once again to get the first switch position. The first digit of the display now shows the switch number. The position of the switch is shown by the rightmost digit. x 0 e) The switch position can now be toggled between and 0 by means of the STEP push button and it is left in the requested position. RESET STEP x f) When switch number is in the requested position, switch number is called up by pressing the push button for one second. As in step e), the switch position can be altered by using the STEP push button. As the desired setting for SGF/ is 0 the switch is left in the 0 position. g) Switch SGF/3 is called up as in step f) by pressing the push button for about one second. s s

30 h) The switch position is altered to the desired position by pressing the STEP push button once. RESET STEP x 3 i) Using the same procedure the switches SGF / are called up and, according to the example, left in position 0. 5 x s j) In the final setting mode position, corresponding to step c), the checksum based on the set switch positions is shown k) If the correct checksum has been obtained, it is recorded in the memory by pressing the push buttons and STEP simultaneously. At the moment the information enters the memory, the green dashes flash in the display, i.e If the checksum is incorrect, the setting of the separate switches is repeated using the and STEP push buttons starting from step d). RESET STEP l) Recording the new value automatically initiates a return from the setting mode to the normal menu. Without recording one can leave the setting mode any time by pressing the PRO- GRAM push button for about five seconds, until the green display digits stop flashing. 5 s m) After recording the desired values return to the main menu is obtained by pressing the STEP push button until the first digit is turned off. The LED indicator SGF still shows that one is in the SGF position and that the display shows the new checksum for SGF currently in use by the relay module. RESET STEP n x s