Device, system and method for automatic self-test for a...

Details Device, system and method for automatic self-test for a... Device, system and method for automatic self-test for a...

2009-03-20

2011-12-20

Nguyen, Hoai-An D (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of ground fault indication

C324S424000, C361S042000

Reexamination Certificate

active

08081001

ABSTRACT:
A self-test circuit is provided that includes a signal circuit adapted to periodically output a circuit inhibitor signal to inhibit a breaking signal from a ground fault detector. The signal circuit is also adapted to periodically output a test signal simulating a ground fault. The self-test circuit also includes an alarm circuit adapted to receive an output signal from the ground fault detector in response to detecting the ground fault, and adapted to output an alarm when the ground fault detector is not operative. The signal circuit may be further adapted to periodically output a second test signal simulating a grounded neutral condition. A ground fault circuit interrupter system and a method are also provided.

REFERENCES:
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patent: 7525402 (2009-04-01), Gao
patent: 7986501 (2011-07-01), Kamor et al.
patent: 2007/0146945 (2007-06-01), Chen
patent: 2010/0295568 (2010-11-01), Ostrovsky et al.
patent: 0649207 (1994-09-01), None
Fairchild RV414 Low Power Ground Fault Interrupter, Rev. 1.0.6 Jun. 30, 2005, www.fairchildsemi.com.

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