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Arcing fault detector with multiple channel sensing and circuit breaker incorporating same

  • US 5,805,397 A
  • Filed: 09/29/1997
  • Issued: 09/08/1998
  • Est. Priority Date: 09/29/1997
  • Status: Expired due to Term
First Claim
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1. Apparatus for detecting arcing faults in an electric power system subject to power line carrier signals, said apparatus comprising:

  • sensing means sensing current in said electric power system and generating a sensed current signal;

    multichannel bandpass filtering means bandpass filtering said sensed current signal with assigned, distinct non-overlapping passbands; and

    output means generating an arcing fault signal only when all channels of said multichannel bandpass filtering means detect a signal in the assigned, distinct non-overlapping passbands simultaneously.

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