Eaton Electrical Predictive Diagnostics ELECTRICAL. InsulGard TM. StartUp Guideline for Switchgears EEPD, 2012, Version 1.1

Transcription

1 Eaton Electrical Predictive Diagnostics ELECTRICAL InsulGard TM StartUp Guideline for Switchgears EEPD, 2012, 2015 Version 1.1 September 2015

2 EATON ELECTRICAL 2 Predictive Diagnostics TABLE OF CONTENTS Table of Contents... 2 Installation Staircase... 3 Getting ready... 4 CIRCUITS INTEGRITY CHECK... 5 Check InsulGard Power Supply Voltage... 5 Check PD sensors installation Check PD sensor coax cables termination... 6 Check external Temperature and Humidity sensors Insulgard Configuration verification... 8 InsulGard Software Installation... 8 Establishing Communication with InsulGard from laptop... 8 Verifying/Correcting Configuration... 9 Set Correct Date and Time Erase device memory PD Channel Calibration/Verification Prepare Settings for calibration/verification Calibration/Verification procedure Base Line measurement on energized object Phase Shift Measurement Base Line Measurements Appendix PD System Installation Checklist: PD sensors configuration table PD Sensors Configuration and Designation in database

3 EATON ELECTRICAL 3 Predictive Diagnostics INSTALLATION STAIRCASE Done!!! Installation Staircase is a compressed visualization of Partial Discharge monitoring project from getting hardware at installation site to final commissioning of properly operating system Start Up and base line measurements on energized equipment Sensors calibration/ verification Report on installation/ commissioning Customer training and database synchronisation Software Installation, communication test Sensors and external lines connection check Begin with Identify and verify proper power and communication lines to be connected to the InsulGard Identify place and way of sensors and InsulGard installation Check contents against the packing lists and the equipment condition for shipping damage. Verify that it is exactly the device designated for this project Actual installation Print and use PD system installation checklist from Appendix for StartUp and Commissioning as a guideline and a core of installation report. 3

4 EATON ELECTRICAL 4 Predictive Diagnostics GETTING READY The purpose of this manual is to provide guidelines for Start Up of an InsulGard system installed on switchgear. Some of operations below are to be performed on de-energized equipment and other after equipment is back in service! ALWAYS use appropriate safety practice to ensure safe work! StartUp Procedure Guideline does not replace InsulGard and its sensors Manuals. The procedures described below assume that InsulGard and the sensors are installed in accordance with their installation Manuals. InsulGards are generally not interchangeable devices. Sensors configurations can vary significantly from project to project. Be sure that the Insulgard device is designated for this particular project and to be connected to this particular set of sensors. Typically InsulGard comes preconfigured in accordance with available information on application and sensors configuration received from the customer (see Appendix). Switching InsulGard devices can require significant reprogramming of database software and InsulGard firmware settings and can lead to errors. Required Items The following items and set of documentation shipped with InsulGard are required for the functionality tests and start up: - InsulGard Manual - InsulGard Software Manual - Sensors manuals - Multi-meter to measure resistance from 0.5 Ohm to 10 kohm and AC/DC voltage up to 250V. - Laptop computer with Windows operation system and preinstalled InsulGard software with database file for this particular installation. - USB cable - A to B type. - Special PD calibration generator or other pulse generator with pulse width ns, repetition rate 1-10 khz and magnitude ~10V on 50 Ohm load. Calibration/verification procedure considered optional but highly recommended. - Print and use PD system installation checklist and PD sensors configuration table from Appendix as a guideline for StartUp and Commissioning procedures and a core of the installation report. 4

5 EATON ELECTRICAL 5 Predictive Diagnostics CIRCUITS INTEGRITY CHECK InsulGard and monitored object must be de-energized. The best way is to de-energize the power line coming to the InsulGard. Additionally for panel mount InsulGard open the fuse located on the DIN-Rail. Check InsulGard Power Supply Voltage The voltage between Line and Neutral contacts of the Insulgard power input must be 115 or 230 VAC +/-10% in accordance with voltage on InsulGard label. The voltage between Neutral and Ground contacts of the Insulgard power input must be near zero. Verify that wire to the closest Ground (Figure 2a) has good contact with Ground. The voltage between this Ground and InsulGard power input ground contact must be near zero. If insulating transformer is used check ground connections and voltage between Line and Neutral only. Using of autotransformer is not recommended, if used, be cautious neutral should have ground voltage. Don t use UPS power. Check PD sensors installation. Check that IPDS sensor is reliable grounded. Visually verify proper coax cable connections to IPDS sensors (Figure 1a).Swapped shield and central wire can be detected only after object was energized - too late to change. Check clearance between signal cable and HV conductors. Rule of thumb: maintain that distance same as IPDS height for given voltage class. Visually verify proper RFCT sensor installation: proper direction of the arrow on the sensor label to Ground and that the wires grounding feeder shields don t touch grounding surface before they go through the sensor (Figure 1b). Central conductor Shield This Direction to Ground From feeders' shields To the Ground Bus Coax Cable to a connection box These wires must not touch ground surface Additional short ground if original ground is 2' or longer To a closest frame ground point a. Coax cable connection to IPDS sensor Figure 1 b. RFCT sensor installation on 3 phase ground shield wires 5

6 EATON ELECTRICAL 6 Predictive Diagnostics Check PD sensor coax cables termination Provide easy access to InsulGard sensor interface board (Figure 2). In door mounted option you need only access the back of InsulGard, for InsulGard on back panel or mounted in an enclosure you need to disconnect and remove monitor from the panel. Before removing the monitor don t forget to disconnect flat ribbon cable from Sensor Interface Board and additional wire grounding the monitor back cover from DIN-Rail terminal. a. Sensor Interface Board of Door mount InsulGard with 9 coax cables from PD sensors. b. Sensor Interface Board on the Insulgard panel with 9 coax cables from PD sensors Short wire to the closest Ground H%/Ref Switch Figure 2 Visually verify good connection of coaxial cables to interface board (no shorts, connections are tight). An example of good (a) and inappropriate (b) coax cable terminations is shown on Figure 3 below. a Figure 3 b 6

7 EATON ELECTRICAL 7 Predictive Diagnostics NOTE: It is important to have phase A coupling capacitor on Channel #1 to obtain phase reference through InsulGard hardware and firmware features. Check that the sensors connected to the interface board are in sequence: coupling capacitors to first three channels then the rest of the sensors. It is not applicable to PD systems that do not using coupling capacitors. If necessary, reconnect sensors and make corresponding changes in software/firmware sensor configuration settings (see Appendix2). Measure resistance of each PD sensor across terminals on the Sensor Interface Board and fill out PD Sensors Configuration table from Appendix. For IPDS this resistance should be close to 3kOhm. For RFCT sensor this resistance should be ~2 ohms or less. Basically it is the resistance of the coax cable and depends on its length. Check external Temperature and Humidity sensors. Depend on ordered option you may have internal or external Temperature and Humidity sensors. Check that external sensors are properly wired to the Sensor Interface Board. Sensor Terminal # Sensor wires Temperature sensor 1 RTD common wire (white wire) 100 Ohm Platinum RTD 2 RTD signal wire (black wire) 3 RTD signal wire (red wire) 4 Cable shield (optional) Humidity sensor 10 Sensor common (white wire) VDC for the sensor (red wire) 12 Output signal (black wire) Check Temperature and Humidity signals Reinstall InsulGard monitor (for panel mount option), restore all connections and power monitor up. InsulGard will boot up, will display Firmware version and start showing parameters on display. Scroll display parameters using any arrow on InsulGard keypad. Check for Temperature and Humidity readings. They should reasonably reflect conditions at the sensors installation location. To measure humidity the switch H% /Ref (Figure 2) must be in H% position. 7

8 EATON ELECTRICAL 8 Predictive Diagnostics INSULGARD CONFIGURATION VERIFICATION InsulGard Software Installation Refer to the InsulGard Software Manual for software installation and database operation. InsulGard monitor(s) comes with installation CD with every order. The database is preconfigured for each particular application and reflects the monitored object structure and sensors configuration. If software is already installed on the PC one need uninstalling the existing software through Control panel/add or Remove Programs. Uninstalling will not remove any preexisting data. Read notes on the installation CD. Install the software from newly received CD. Use software manuals for additional information. Installation procedure will update the software version and will update database object structure for the project. At the first run InsulGard software will ask for Template.mdb file located on the installation CD and will add new objects into the existing database. Important: If you already had same customer in preexisting database, software will merge new location(s) and object(s) from Template.mdb on CD to existing InsulGard.mdb database. If your database does not have that customer the software will not update your database and new objects will not be added. In last case we would recommend removing or renaming the file Insulgard.mdb in Program Files/Insulgard/Data/ before installation. Then InsulGard software will copy Template.mdb file from installation CD to Program Files/Insulgard/Data/Insulgard.mdb. In Vista and Windows 7 data file can be found in C:\IG_DATA folder. For those who handle multiple customers or multiple locations, it is highly recommended to keep separate databases for each customer and each location of given customer under different names. Otherwise data base containing multiple objects and multiple locations will grow in size very fast and will slow down even a powerful computer. Consult to the Software manual for database issues. Establishing Communication with InsulGard from laptop Certain familiarity with InsulGard software is required to accomplish the procedures described below. Please refer to the manuals for InsulGard and InsulGard software. 1. Connect PC and InsulGard with the USB cable. Ethernet communication option is out of the scope of this procedure. USB connection has been chosen as the simplest and most reliable local communication. You may have to install communication software first. Refer to the corresponding paragraph of InsulGard User Manual. 2. Start InsulGard software and select appropriate object (you may have more then one InsulGard at the site). 3. In Unit Settings tab check InsulGard ModBus address and communication speed. Typically, each device is pre-configured to the best our knowledge based on the order and additional information received. InsulGard address is already configured in the device and in database and Baud rate set to default baud. Otherwise settings should be changed to be the same in software and hardware. 8

9 EATON ELECTRICAL 9 Predictive Diagnostics 4. Device setting may be modified by third party if it was an indirect shipment. Or devices assigned for different projects or for different locations for the same project could be switched. Verify that the proper Insulgard device has been installed. Commonly there is a sticker on an InsulGard face plate with name of the object and device address. 5. In Configuration Tab check appropriate InsulGard ModBus address and correct communication speed. 6. In Communications Tab set correct COMM port for your PC. You may find your Gadget Serial port number in Control Panel/System/Device Manager/Ports. Port number represents virtual serial port number assigned during installation of the communication software. 7. Verify communication by clicking Get Device Time or Get Number of Records in Communications Tab. Will also see sign * on InsulGard display, meaning that the device is communicating. Correct date/time if necessary. Verifying/Correcting Configuration Verify that the proper InsulGard device has been installed by sticker on the InsulGard face and comparing serial numbers in software and on the monitor label. 1. Go to Unit settings tab and save the existing settings by clicking BackUp Settings. One can always retrieve those settings if faced a problem. 2. Press the Get Settings from Device button located on the Communications Tab. If downloaded settings do not coincide with database settings it is an evidence of possible modification by third party or switched InsulGard devices. 3. If you have different settings in the device, database software will display warning message and list parameters that are different. Write down the differences it will help to change settings wisely afterwards. Scroll through to the end of the list some lines may be out of the window. Click Update Database with Device Settings if you are sure that working with proper object and device and changes must be made. 4. Verify channels activation and sensors IDs in software Unit Settings. If the existing database configuration does not match actual sensors configuration in the monitored object, change software configuration to reflect the actual sensors configuration (see Appendix). 5. After correcting settings in software press Backup Settings in Unit Settings tab. 6. Send correct settings by pressing Send Settings to Device button in Communications Tab. 9

10 EATON ELECTRICAL 10 Predictive Diagnostics Set Correct Date and Time The time and date on the InsulGard was set in Minneapolis, Minnesota. Local time and date must be entered. Also if a device has spent too much time on a shelf, backup clock battery can be discharged and date/time corrupted: 1. Go to the Communications Tab. 2. If the time and date on you computer is the same as the local time and date, press "Apply PC Time" button. 3. Can make any changes to the time and date in the Device Time field to reflect local time. 4. Click "Set Device Time" button. Erase device memory Erase all data might be stored in the InsulGard memory by clicking Erase Device Memory in Communications tab. PD CHANNEL CALIBRATION/VERIFICATION (Optional but highly recommended.) Perform calibration/verification by injecting Pulse Signal to the sensors from a calibrating generator and recording data with InsulGard monitor. It is the only 100% reliable way to verify proper sensors connections and functioning through out the whole InsulGard/Sensors system. Errors like wrong sensor cable labeling, switched central wire and shield of coax cables can t be verified with ohmmeter. Have PD calibrator or pulse generator with pulse width ns, repetition rate ~1-10 khz and magnitude ~10 V (@50 Ohm load). Prepare Settings for calibration/verification 1. Copy database file from Program Files/InsulGard/Data/Insulgard.mdb with new name CalibrationXX.mdb into the same directory. 2. Start InsulGard software, go to File/Open menu, navigate to CalibrationXX.mdb file and Open it. 3. Chose the object to be calibrated and click on Update This Equipment 4. Go to Unit Settings tab and BackUp Settings. 5. Change Power Frequency Cycles per Acq. to 5, uncheck Noise Filter box and change Data Storage Mode to Test Mode by clicking on Normal Mode/Test Mode toggle button. 6. Send setting to the device. 10

11 EATON ELECTRICAL 11 Predictive Diagnostics Calibration/Verification procedure Use GKI-2 pulse generator by Eaton to inject pulse in common mode between the HV conductor and ground using cable with alligator clips. If different pulse generator used, set the generator pulse parameters: Pulse Magnitude ~10 Volt, Pulse Width 100 nanoseconds, Pulse repetition rate ~ 1-10 khz. Magnitude and pulse repetition parameters are not critical. Pulse width should not exceed 500 ns. Preparation 1. Connect the output of the pulse generator between either end of the jumper cable of an IPDS sensor and ground (Figure 4). Make sure the ground connection is as short as possible. It is suitable to connect directly to the closest point on the frame as in the picture below: 2. In case of RFCT senor, signal should be injected to the feeder terminal(s). Use only phase B if one RFCT sensor per all three phases installed. If one RFCT per each phase used, test every phase in order. If feeders are not terminated and RFCT sensors not installed over cables shield grounds, one can test connections and sensor functioning by shortening the generator leads through RFCT opening. RFCT GKI-2 test generator connected to IPDS HV contact Connect test generator to phase B feeder terminal Figure 4 11

12 EATON ELECTRICAL 12 Predictive Diagnostics Calibration Verification steps 1. Switch the generator ON and run Single Measurement from Communications tab of the InsulGard software. A measurement time is proportional to the number of active channels and will take approximately 1.5 minutes for maximum 15 active channels. 2. Download data from InsulGard by pressing Read the Latest Device Records button. Observe phase-resolved data from this measurement from the Graphs and Report Tab. An example of expected data is shown in the Figure below. ~2V output signal on IPDS on phase C 3. Click on Copy button and Paste the picture into a word document for the records. 4. Write down in PD sensors configuration table (see Appendix) approximate magnitude measured in the channel connected to the sensor under the test. You can expect to see higher magnitudes for the sensor where the signal injected and lower magnitudes for the rest of channels reflecting pulse cross-coupling and attenuation. Typical magnitudes for IPDS sensor is ~ 1-2V, for RFCT with pulse injection to feeder termination is ~0.5-1 V. Those magnitudes can differ significantly depending on size and number of feeders connected to the termination. This measurement process should be repeated by injecting signals to every sensor. Response for similar sensors and similar geometry should be similar. 5. Switch Off and remove the calibrating generator. 6. Click Recall BackUp in Unit Settings Tab and send settings to the device to restore the proper settings. 7. We would recommend saving calibration data (Calibration XX.mdb) for the records. 8. Erase all data stored in the InsulGard by clicking Erase Device Memory in Communications tab. 12

13 EATON ELECTRICAL 13 Predictive Diagnostics BASE LINE MEASUREMENT ON ENERGIZED OBJECT At this point all signal cables are connected and the InsulGard is powered up, the equipment energized and running and the software is installed on the PC. Data base configuration is verified and corresponds to the application. Note: If Calibration/Verification procedure (see above) hasn t been performed and the equipment already energized, it is possible to verify what PD sensors are connected to the Sensor Interface Board: - Check that PD sensor coax cables is not shorted at its termination on the Sensor Interface Board (see Figure 3 above) - Measure AC voltage across coax cable terminations. The output voltage for IPDS sensor should be ~0.7VAC for 13.8 kv systems (for different system change that value proportionally). - Then measure output resistance of the cables which have AC voltage near zero. For RFCT sensor this resistance should be ~ 2 Ohms or less. Basically it is the resistance of the coax cable and depends on its length. For the shorted coax cable this resistance can be as for RFCT sensor. For IPDS sensor this resistance should be close to 3kOhm and there is no AC output voltage because shield and central wire of coaxial cable were swapped at connection to the sensor. For broken coax cable this resistance should be indefinite. Phase Shift Measurement In order to provide a phase-resolved data, InsulGard uses phase synchronization signal. InsulGard monitor has the internal connection from power supply AC voltage to the synchronization circuitry. Synchronous option (default) works on monitored objects powered from a regular power system (60/50Hz) in the area. Phase shift between InsulGard AC power and HV phase in the monitored object should be determined to get proper phase resolved PD patterns and increase diagnostic capabilities. If this phase shift is known or determined by any other means (oscilloscope or any phasemeter), it can be manually entered in the monitor settings from key pad or through the software. InsulGard allows automated detection of phase shift between control power supplied to the device and phase reference signal coming from phase A coupling capacitor connected to channel #1. If there is no coupling capacitors a reference signal can be taken from a corresponding Potential Transformer or from any source with known phase shift to HV system voltage see Appendix 7 of InsulGard User Manuals. Reference signal must not exceed 5VAC RMS use appropriate divider to bring reference signal into preferable range of VAC. This operation should be performed one time considering that InsulGard power and system voltage connections have not been changed during monitoring. Automated phase shift measurement can be done only from InsulGard keypad: 1. Press Set key to enter the setup mode. The password prompt should appear on the display as shown: Enter Setup Password: Enter the password 5421 by using and to move to different digits and and to change the values. Then press Enter key. Wait about 20 seconds for the display to change from dashed lines to Set date before pressing any other key. If the wrong password is entered the 13

14 EATON ELECTRICAL 14 Predictive Diagnostics dashed lines remain on the display until another key is pressed. When InsulGard is in Set mode, the Set LED will be on. 2. Using and keys scroll to Set Phase Shift and Press Enter: Manual Input Phase Shift 3. Use any arrow key to switch from Manual Input to Auto Detect mode: Auto Detect Phase Shift 4. Move H%/Ref switch at the bottom of the Sensor Interface Board to Ref position. Then press Enter to start phase angle shift measurements. Display will update every 15 seconds. Detecting Phase 5. Observe changing readings for 1-2 minutes and calculate average of the displayed values. Note: Typically measured value deviates within the range of +/ Below are some hints that may help to identify phase angle measurement problems: - Phase angle varies on more than +/-10 0 (low reference signal magnitude or high noise). On display??? (reference signal is likely close to zero). On display continuously 357 (reference signal magnitude is too high). 6. Press Enter any time to stop phase measurements. Set Phase Shift will be displayed. Press Enter twice and manually enter averaged phase shift angle, press Enter again. Note: If using other source of phase reference signal rather then the internal connection to the coupling capacitor on channel #1, correct obtained phase shift value according to the table below: Phase Reference source Additional Phase Shift Channel 1 (Coupling Capacitor on Phase A ) 0 PT Phase A 0 PT Phase B -120 PT Phase C -240 PT Phase A-B +30 PT Phase C-B Press Esc to save changes and leave Set mode. 14

15 EATON ELECTRICAL 15 Predictive Diagnostics 8. Return H%/Ref switch into H% position. 9. After finishing with phase shift measurement and exiting setting mode in InsulGard go to Unit Settings Tab in the software and type final phase shift angle value in Phase Reference Shift box or go to Communications Tab in the software and Get Settings from Device to synchronize settings in the monitor and software. Click Update Data base with Device settings when phase shift settings discrepancy will be displayed. 10. In InsulGard Unit Settings Tab save new configuration by clicking BackUp Settings button. Note: Older versions of Insulgard hardware and firmware have deviation from the described above procedure consult to the Manuals that came with that device or consult to EE PD. Base Line Measurements The final steps include taking phase resolved data records in Test mode and analyzing the data. 1. Erase any pre-existing data in the device memory by pressing Erase Device Memory button in the right top on Communications window. It will take about a minute for the device to accomplish. 2. Go to the Unit Settings tab and change the Data Storage Mode from "Normal" (Brief) to "Test (Full). 3. Go to the Communications Tab on the InsulGard software and press "Send Settings To Device" button to update the current configuration. 4. On the Communications window press the "Single Measurement" button. This should force the InsulGard to make a measurement. You should see " " across the InsulGard display. This process can take as long as 6 minutes. After finishing measurements InsulGard will return to scrolling mode and will be ready for the next measurement. 5. Repeat step 4 three more times. 6. Once all measurements are complete, press the "Read The Latest Device Records" button on the Communications window. This will upload all data to the computer. 7. Go to the Unit Settings screen and change the Data Storage Mode from "Test" to "Normal". 8. Go to the Communications Tab and press the "Send Settings To Device button" to update monitor configuration. Failing to return to Normal mode will lead to storing excessive information in the device memory and wasting flash memory resource. 9. Analyze the data. Reasonable changes can be made to settings based on data obtained. Send database to EEPD if any questions. InsulGard can be left for monitoring 15

16 EATON ELECTRICAL 16 Predictive Diagnostics APPENDIX PD System Installation Checklist: # Procedure Result Installation: 1 Unpack InsulGard and sensors, verify packing lists and equipment condition 2 Verify that it is the system designated for the object. Temporal label on the front panel of an InsulGard shows the object name. S/N on the InsulGard label should coincide with InsulGard S/N in database software for this object. 3 Verify power voltage designated on the InsulGard label. (Don t use UPS power, beware of autotransformers, use insulating transformer instead if needed.). 4 Identify place and way of the sensors and Insulgard installation. The places of PD sensor installation must coincide with sensor configuration in Insulgard data base made in accordance with Questionnaire from a customer. Fill out PD Sensor Configuration table. Object name: Object nameplate information: Insulgard S/N U= PD sensors configuration table 5 Proceed with installation and cable termination in accordance with corresponding Manuals and PD Sensor Configuration table. Circuits Integrity Check 6 Check External Ground being brought to the Insulgard (right to the Door-mount unit or to InsulGard panel / enclosure). 7 Measure power supply voltage. (If insulating transformer was used for power supply, check voltage only between Line and Neutral) U (line to neutral) = U (neutral to ground) = 8 Check IPDS sensor installation. They must be reliable grounded. Visually verify proper coax cable connections to IPDS sensors. Check clearance between signal cable and HV conductors. Rule of thumb: maintain this distance same as IPDS height for given voltage class. 9 Check RFCT sensor installation: proper direction to Ground the arrow on the sensor label and that the wires grounding feeder shields don t touch grounding surface before they go through the sensor. 10 Check proper connection of PD sensors to the Sensor Interface Board. Measure resistance of each PD sensor across board terminals and write down in the table. PD sensors configuration table 16

17 EATON ELECTRICAL 17 Predictive Diagnostics 11 Check external Temperature and Humidity sensors connections if used. Verify reasonable reading of the temperature and humidity on InsulGard display. T = H= Insulgard Configuration Verification 12 Software and database corresponding to the object have been installed 13 Communication with the InsulGard through local port verified. Correct date and local time were set. 14 Configuration of the database changed to the actual sensors configuration 15 Updated configuration uploaded to the InsulGard and saved as Back Up 17 PD sensors configuration table PD Channel Calibration/Verification (Optional but highly recommended). 16 Prepare monitor by setting calibration configuration 17 Perform calibration/check of the sensors and InsulGard functionality by injecting signal to every sensor from pulse generator. Write down measured signal magnitudes in the table. Save calibration data records. 18 Restore monitor configuration and erase device memory. This will conclude installation procedure 19 StartUp: Base Line Measurements on Energized Equipment 1. Software installed, database corresponds to the object - 2. Phase reference measurement performed - 3. Settings downloaded to the database software - 4. InsulGard memory cleared 20 Base Line measurements: 1. Base line measurements performed in Test Mode 2. Data downloaded into database 3. Data analyzed, necessary changes to the settings have been made - 4. InsulGard set in Normal Saving Mode and left for monitoring 21 Customer training 1. Install software to the customer computer 2. Synchronize databases by copying your database to PD sensors configuration table Calibration data records

18 EATON ELECTRICAL 18 Predictive Diagnostics the customer computer or downloading settings and data to a customer computer from the Insulgard 3. Train customer to operate InsulGard from his computer 4. Teach how to transfer data for analysis 22 Prepare and submit the installation/commissioning report PD sensors configuration table The table below helps to avoid errors at PD sensor installation, their cables termination and for report preparation. Ch # Sensor designation in database 1) Sensor measured resistance 2) Pulse Magnitude recorded by InsulGard 3) Vertical section (Cubicle) original name# Cubicle/Bus/Feeder information 1) Sensor designation in database in accordance with information in Questionnaire received from customer. Correct it if sensor locations were changed. 2) For IPDS this resistance should be close to 3kOhm. For RFCT sensor this resistance should be ~2 Ohms or less. Basically it is the resistance of the coax cable and depends on its length. 3) Pulse Magnitude recorded by InsulGard at system calibration (Optional). 18

19 EATON ELECTRICAL 19 Predictive Diagnostics PD Sensors Configuration and Designation in database. Typically InsulGard monitor comes preconfigured in accordance with available information on application and sensors configuration in a Questionnaire received from a customer. Switching InsulGard devices can require significant reprogramming of database software and InsulGard firmware settings and can lead to errors. An example of information for PD sensors configuration in a Questionnaire received from a customer: InsulGard #1. Switchgear Line ID is: SG Channel # Sensor Type connected to Channel # CC Coupling Capacitor (IPDS) CT- Radio Frequency CT (RFCT) (Delete inappropriate) Cubicle Position from left to right Write index 1 for Top or 2 for Bottom compartment (if applicable) Phase: (A / B / C/ N) or (A1 / B1 / C1/ N1) for Top or (A2/ B2 / C2/ N2) for Bottom compartment (rule #4) Sensor designation 1 CC 2 2 A2 CC_02 A2 2 CC 2 2 B2 CC_02 B2 3 CC 2 2 C2 CC_02 C2 4 CC 5 2 A2 CC_05 A2 5 CC 5 2 B2 CC_05 B2 6 CC 5 2 C2 CC_05 C2 7 CC 7 2 A2 CC_07 A2 8 CC 7 2 B2 CC_07 B2 9 CC 7 2 C2 CC_07 C2 10 CT 1 2 N2 CT_01 N2 11 CT 2 2 N2 CT_02 N2 12 CT 3 2 N2 CT_03 N2 13 CT 6 2 N2 CT_06 N2 14 CT 7 2 N2 CT_07 N2 15 CT 8 2 N2 CT_08 N2 TOTAL: 9 TOTAL: 6 Sensor designations in this table indicate: type of the sensor (CC - IPDS), place of installation (02 line up vertical section-cubicle position counted from left to right), bus or feeder phase (A), (For RFCT sensors (CT) installed on all three feeder shield ground wires its phase designated as N neutral) part of the vertical section if applicable (2 - bottom part). 19

20 EATON ELECTRICAL 20 Predictive Diagnostics Insulgard Settings for Channels in database have same designations of the sensors as in the above table. If at installation the sensors positions were changed the sensor designation in the database must be changed correspondingly. 20