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THREE-PHASE FAULTED CIRCUIT INDICATOR

  • US 20090251308A1
  • Filed: 04/03/2009
  • Published: 10/08/2009
  • Est. Priority Date: 04/04/2008
  • Status: Active Grant
First Claim
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1. A faulted circuit indicator for sensing a fault current within a three-phase power cable having a plurality of conductors and an exterior conductive layer, the faulted circuit indicator comprising:

  • i) a flexible holder adapted to mount on the exterior conductive layer;

    ii) four or more magnetic sensors disposed periodically along the length of the flexible holder, the magnetic sensors adapted to monitor current flow within an internal conductor of the three-phase power cable and to generate a voltage indicative of the monitored current; and

    iii) a logic circuit coupled to the magnetic sensors, the logic circuit generating a fault signal when the voltage generated by one or more of the magnetic sensors exceeds a predetermined level.

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