DEVICE FOR DETECTING A DEFECT IN INSULATION

摘要

The invention relates to a device for detecting a defect in insulation in a continuous voltage source, including: first and second input terminals (47, 48); first and second impedors (41, 42) connected, in series, between the first and second input terminals; and a current-detecting circuit (45) connected between an electric ground and an intermediate point (49) between the first and second impedors. The current-detecting circuit (45) includes a microcontroller (453) comprising an input terminal for receiving a voltage proportional to the insulation-defect current, said input terminal being connected, via a third impedor (456), to a power supply at a voltage level at least ten times lower than the voltage level of the DC voltage source, said input terminal being further connected to the electric ground (93) via a fourth impedor (457), wherein the microcontroller (453) is configured to determine the amplitude of an insulation defect.