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Series arc fault diagnostic for aircraft wiring

  • US 6,882,158 B2
  • Filed: 01/23/2002
  • Issued: 04/19/2005
  • Est. Priority Date: 01/24/2001
  • Status: Expired due to Term
First Claim
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1. A device for locating a series arc fault at one or more series connections having a first end and a second end, the first end of the connections being coupled to a source of common-mode voltage and the second end of the connections being coupled to a wire, the wire having a conductive layer and a insulation layer for sheathing the conductive layer, the device comprising:

  • an electrode electrically coupled to the source of common-mode voltage at a first node, thereby providing a reference based on the common-mode voltage;

    a probe adapted for clamping to the wire at a second node, thereby forming a coupling capacitance to electrically couple the probe to the wire; and

    a measuring circuit being coupled to the probe and being coupled to the electrode so as to measure an AC voltage between the first node and the second node to detect and locate the series arc fault.

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