DC ground fault detection with resistive centering

Details DC ground fault detection with resistive centering DC ground fault detection with resistive centering

2006-05-23

2006-05-23

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of ground fault indication

Reexamination Certificate

active

07049825

ABSTRACT:
A method for determining the nature of a ground fault in a floating direct voltage load powering context includes measuring the load voltage and the current at a nominal balance point, both before and after closing a circuit to the load. The fault resistance and the fault voltage are determined as the solution to an equation in two unknowns given the conditions before and after application of load voltage or at least precharge.

REFERENCES:
patent: 4947469 (1990-08-01), Vokey et al.
patent: 6833713 (2004-12-01), Schoepf et al.

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