DC GROUND FAULT DETECTION CIRCUIT AND DC GROUND FAULT DETECTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a DC ground fault detection circuit capable of improving the detection sensitivity of a DC ground fault when a DC electric circuit is long.;SOLUTION: The DC ground fault detection circuit 1, provided for detection of a DC ground fault generated in a DC electric circuit, includes: current detection means that detects an electric current running through a detection point on the DC electric circuit when a DC ground fault occurs, and a resonance circuit 3 provided to compensate for a ground electrostatic capacity on the upstream side of the detection point for the purpose of accommodating an increase in the ground electrostatic capacity on the upstream side.;COPYRIGHT: (C)2013,JPO&INPIT