Self fault-detection circuit for ground fault circuit...

Details Self fault-detection circuit for ground fault circuit... Self fault-detection circuit for ground fault circuit...

2011-05-17

2011-05-17

Fureman, Jared J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

Reexamination Certificate

active

07944653

ABSTRACT:
A self fault-detection circuit for a ground fault circuit interrupter comprising: (i) a Metal Oxide Varistor (MOV) fault detection unit for detecting a fault condition of the MOV, and sending a first trigger signal if a fault condition of the MOV is detected, (ii) a trip circuit fault detection unit for detecting a fault condition of a trip circuit, and sending a second trigger signal if a fault condition of the trip circuit is detected; and (iii) a fault reaction unit for receiving at least one of the first trigger signal and the second trigger signal, and responding to the first and second trigger signals with an action, when at least one of the first and the second trigger signals is received by the fault reaction unit, the fault reaction unit indicates that at least one fault condition exists in the ground fault circuit interrupter.

REFERENCES:
patent: 5418678 (1995-05-01), McDonald
patent: 5661623 (1997-08-01), McDonald et al.
patent: 6807036 (2004-10-01), Baldwin
patent: 2002/0008950 (2002-01-01), Kim et al.
patent: 2004/0004801 (2004-01-01), Bonilla et al.
patent: 2006/0198066 (2006-09-01), Chen et al.
patent: 2007/0164750 (2007-07-01), Chen et al.

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