Method and apparatus for ground fault detection

Details Method and apparatus for ground fault detection Method and apparatus for ground fault detection

2011-07-12

2011-07-12

Pham, Toan N (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S652000, C340S661000, C361S042000

Reexamination Certificate

active

07978089

ABSTRACT:
In one embodiment, the present invention is a method and apparatus for ground fault detection. One embodiment of a method for diagnosing a ground fault in a notification appliance circuit comprising a plurality of field wiring connections includes individually testing each of the plurality of field wiring connections until a source of the ground fault is detected and outputting a signal identifying the source of the ground fault.

REFERENCES:
patent: 3911323 (1975-10-01), Wilson et al.
patent: 4459582 (1984-07-01), Sheahan et al.
patent: 6144537 (2000-11-01), Boteler
patent: 7312964 (2007-12-01), Tchernobrivets
patent: 7529069 (2009-05-01), Weems et al.

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