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Protection - GFCIErr - Leakage Current High

Fault Description / Instruction:

  1. Turn OFF AC switch to disconnect from grid.
  2. Open fuse holders to isolate PV strings. Test strings with string test set
  3. Add one PV string at a time, and start up inverter to see if alarm occurs.
  4. If no alarm, turn OFF AC switches to disconnect grid, add in the next string. Start inverter again
  5. Continue until the string that triggers the alarm is identified. Trace back the faulted string to find any leakage to Earth Ground.

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