| 摘要 |
PURPOSE:To make it possible to detect ground fault positively without feeding short circuit current by interrupting between a feeder and the body of vehicle through a capacitor while furthermore detecting variation of impedance due to ground fault. CONSTITUTION:The ground fault detecting circuit comprises a network(C1, C2, R1, Rx1, Rx2) having impedance variable upon occurrence of ground fault and including capacitors(C1, C2) for interrupting between feeders(B1, B2) in DC sense, and impedance variation detecting circuits (1, 2) for detecting variation of impedance in the network thereby detecting occurrence of ground fault. |
