HV ELECTRICAL SYSTEM_MR & LR 53 8. Check isolation of individual cable in between cable Shield & conductor for both +ve and -ve terminal. 9. If Isolation in cable found ok then cable is ok & if not ok then isolation failure is in cable . 10.Then check E Compressor IR individually between it’s body & +ve terminal, body and –ve terminal. 11.If Isolation in E Compressor is found ok then E Compressor is ok & if not ok then isolation failure is in E Compressor. Note: Follow same procedure for checking PTC Heater isolation resistance. b. Isolation Resistance checking for E Drive: Procedure - E Drive: 1. Remove 3IN1 side E Drive HV connector. 2. Connect +ve terminal of Isolation tester to +ve terminal of removed connector & -ve terminal of Isolation tester to 3IN1 body. 3. Check Isolation resistance on Isolation tester display.IR value should be more than 0.25 M Ohm and voltage should build 520 to 550 V. 4. Connect +ve terminal of Isolation tester to -ve terminal of removed connector & -ve terminal of Isolation tester to 3IN1 body. 5. Check Isolation resistance on Isolation tester display.IR value should be more than 0.25 M Ohm and voltage should build 520 to 550 V. 6. If the isolation resistance value is acceptable limit then reconnect the connector. If Value is less than acceptable limit. 7. Remove E Drive side HV connector 8. Check isolation of individual cable in between cable Shield & conductor for both +veand - veterminal. 9. If Isolation in cable found ok then cable is ok & if not ok then Isolation failure is in cable. 10.Then check E Drive IR individually between it’s body & +ve terminal, body and –ve terminal. 11.If Isolation in E Drive is found ok then E Drive is ok & if not ok then isolation failure is in E Drive. c. HV Battery cable IR checking: Procedure - HV Battery cable 1. Remove 3IN1 side HV battery connector. 2. Connect +ve terminal of Isolation tester to +ve terminal of removed connector & -ve terminal of Isolation tester to 3IN1 body. 3. Check Isolation resistance on Isolation tester display.IR value should be more than 0.25 M Ohm and voltage should build 520 to 550 V. 4. Connect +ve terminal of Isolation tester to -ve terminal of removed connector & -ve terminal of Isolation tester to 3IN1 body. 5. Check Isolation resistance on Isolation tester display.IR value should be more than 0.25 M Ohm and voltage should build 520 to 550 V. 6. If the isolation resistance value is acceptable limit then reconnect the connector. If Value is less than acceptable limit. 7. Remove HV battery side connector. 8. Check isolation of individual cable in between cable Shield & conductor for both +veand - veterminal. 9. If Isolation in cable found ok then cable is ok & if not ok then Isolation failure is in cable. 10.Then check HV battery IR individually between it’s body & +ve, body and –ve terminal. 11.If Isolation in HV battery is found ok then HV battery is ok & if not ok then isolation failure is in HV battery.
RkJQdWJsaXNoZXIy MTIwNTUz