GE Industrial Solutions EntelliGuard G Digital Test Kit - Manual (Page 6)

DEH-4568A Rev. 02 (08/09)
RECORD ALL TRIP UNIT
SETTINGS PRIOR TO TESTING
1.4 Detailed Instructions, Continued
EntelliGuard TU trip unit test procedure
Initial trip unit set-up
Set Long Time Pick-Up to 50% (allows test signal to cause O/L trip without extremely long time delay)
Set Long Time Delay to any of the lower bands
Set Short Time Pick-Up to 9X (set above expected test current)
Set Short Time Delay to any of the intermediate bands or set to OFF
Set Instantaneous Pick-Up > 5X (to prevent instantaneous trip with test kit input)
Set Ground Fault Pick-Up to 0.20
Set Ground Fault Delay to any of the upper delay bands
Clear all events in the Event Log
Scroll to EVENT tab on main screen
Press UP and DOWN arrows simultaneously
Verify Event 0 is blank
Metering Test
Scroll to METER tab on the main screen. Press right arrow to view phase currents
Press PHASE CURRENT button. LED turns ON
Verify ~100A current on Phase A, B, C
Press PHASE CURRENT button again to turn off phase current input. LED turns OFF
Verify 0A current on Phase A, B, C
Breaker Trip Test
Charge and Close Breaker
Press TRIP BREAKER button
Breaker trips
No bell alarm operation and no event reported in Event Log
Ground Fault Test
Charge and Close Breaker
Press OVERLOAD / GROUND FAULT button
Breaker trips
Bell alarm operates, if available
Event log (Event 0) registers ground fault trip with magnitude of approx 1.5 times the sensor
Overload (Long Time) Test
Reset Bell Alarm
Charge and Close Breaker
Press DISABLE GROUND FAULT button - verify LED is ON
Press and hold OVERLOAD / GROUND FAULT button - may take several seconds depending on LT Delay
setting. To accelerate time to trip, adjust the Long Time Pick-up to 50%.
Breaker trips
Bell alarm operates, if available
Event log (Event 0) registers long time trip with magnitude of approx 1.5 times the sensor
RESTORE ALL TRIP UNIT SETTINGS AFTER TESTING IS COMPLETE AND REPLACE RATING PLUG WITH ORIGINAL