Fault electric arc protection circuits and method for...

Details Fault electric arc protection circuits and method for... Fault electric arc protection circuits and method for...

2007-02-21

2008-11-11

DeCady, Albert (Department: 2121)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Product assembly or manufacturing

Reexamination Certificate

active

07451012

ABSTRACT:
The present invention relates to an fault electric arc protection circuits which comprising a power source, a signal sampling device, a signal processing module, an arc detection control device and a power cut-off module. This invention also provides a method for detecting arc-fault, comprising the steps of S1, sampling the current signal of the circuits to be protected in real time, and outputting the sampled signal; S2, processing the sampled signal, then outputting the processed result; S3, detecting the processed result, and then determining whether an arc symbol has occurred based on the detected result. The advantages of the present invention is, when using the electric equipment, once a continuous fault electric arc occurred in the wires, the protection circuits can detect the fault electric are and cut off the power, thus to prevent the fire caused by the fault electric arc.

REFERENCES:
patent: 6621677 (2003-09-01), Amundsen
patent: 7021950 (2006-04-01), Borrego Bel et al.
patent: 7236338 (2007-06-01), Hale et al.
patent: 7317598 (2008-01-01), Magnier
patent: 2007/0133134 (2007-06-01), Kilroy et al.

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