| 摘要 |
PROBLEM TO BE SOLVED: To provide a system interconnection inverter device capable of exactly determining a DC ground fault and positively performing protection from a DC ground fault accident.SOLUTION: The system interconnection inverter device 3, converting DC power into AC power and performing interconnection to a system, a ground fault current detector 7 that detects a ground fault current running through a resistance component and determines whether or not a ground fault state exists on the basis of a ground fault current value, and a controller 8 that controls to stop an operation of an inverter circuit 5 for converting AC power into DC power on the basis of the determination of the ground fault current detector 7. |
