Arc fault detector

Details Arc fault detector Arc fault detector

2007-08-21

2007-08-21

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

C324S509000

Reexamination Certificate

active

11295277

ABSTRACT:
An arc fault detector, as a stand alone device or in combination with a circuit interrupting device such as a ground fault interrupter (GFCI), protects from potentially dangerous arc fault conditions. The device utilizes a line side or load side series connected inductance having an air or magnetic core to generate the derivative di/dt signal of the arc current in the conductor. The derivative signal is fed to an arc fault detector where it is analyzed for the presence of arcing. The device can have two series connected inductors inductively coupled to each other such that the signal from one inductor is inductively coupled into the other inductor for coupling to the arc fault detector.

REFERENCES:
patent: 4356443 (1982-10-01), Emery
patent: 5432455 (1995-07-01), Blades
patent: 6373257 (2002-04-01), Macbeth et al.
patent: 6417671 (2002-07-01), Tiemann
patent: 6426634 (2002-07-01), Clunn et al.
patent: 6433977 (2002-08-01), Macbeth

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