Arc fault detection apparatus, method and system for an...

Details Arc fault detection apparatus, method and system for an... Arc fault detection apparatus, method and system for an...

2008-01-15

2008-01-15

Sherry, Michael (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

C361S005000, C361S006000, C361S009000, C361S010000, C340S286110

Reexamination Certificate

active

07319574

ABSTRACT:
A non-invasive underground arc fault detection apparatus is for an underground electrical conductor. The apparatus includes an electric circuit having an opening for admitting the electrical conductor therethrough. The electric circuit includes one or two transducers adapted to output a first signal representative of current flowing in the electrical conductor and a second signal. An arc fault detection circuit cooperates with the electric circuit to output a third signal derived from the first signal. The third signal is representative of an arc fault of the electrical conductor. An audible annunciator cooperates with the arc fault detection circuit to annunciate the third signal. A power supply cooperates with the electric circuit and is adapted to power the arc fault detection circuit and the annunciator from the second signal.

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