Translations:Ground fault protection device/5/en

1. A fault occurs on a DC ungrounded conductor of a system.
2. The current from the fault follows the equipment grounding conductor (EGC) back to the busbar for the grounded conductor to complete the circuit. Current surges from the PV source.
3. The current of the GFPD on the connection between ground and the grounded conductor is exceeded. The device disconnects the DC system ground, opens the PV source circuit, and the fault is disabled.