Apparatus and method for continuously monitoring grounding condu

Details Apparatus and method for continuously monitoring grounding condu Apparatus and method for continuously monitoring grounding condu

1992-05-15

1994-01-11

Wieder, Kenneth A.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of ground fault indication

324708, 324711, G01R 3114, G01R 2726

Patent

active

052785122

ABSTRACT:
A method and apparatus is disclosed for continuously monitoring the resistance of a grounding conductor to neutral conductor circuit of a power distribution system. The apparatus compares a parameter of a damped sinusoidal waveform from a shock excited resonant circuit coupled to the grounding conductor and neutral conductor at a branch circuit outlet of the power distribution system with a predetermined parameter from the same resonant circuit discharging into an external circuit having a predetermined resistance. The apparatus indicates an undesired grounding conductor resistance.

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