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Arc fault circuit interrupter

  • US 8,599,523 B1
  • Filed: 07/29/2011
  • Issued: 12/03/2013
  • Est. Priority Date: 07/29/2011
  • Status: Active Grant
First Claim
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1. A circuit interrupter device comprising:

  • a device current path comprising;

    a phase conductive path having a line side and a load side;

    a neutral conductive path having a line side and a load side;

    a differential sensor, communicatively arranged and configured to read a current differential between the phase and neutral conductive paths and to output a differential sensor signal representative of a value of the current differential;

    a high frequency sensor communicatively arranged and configured to read a high frequency signal along one of the phase and neutral conductive paths and to output a high frequency sensor signal representative of a presence of the high frequency signal;

    a current sensor communicatively arranged and configured to read a current level along one of the phase and neutral conductive paths and to output a current level sensor signal representative of a value of the current level; and

    a processor configured to;

    (i) receive the differential sensor signal, the high frequency sensor signal, and the current level sensor signal,(ii) increment a count in a counter based on at least in part on the high frequency sensor signal, and(iii) detect a presence of an arc fault condition based on the count in the counter.

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