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Method and a device for detecting an internal arc in a metal-clad electrical link

  • US 6,581,462 B2
  • Filed: 07/01/2002
  • Issued: 06/24/2003
  • Est. Priority Date: 11/25/1998
  • Status: Expired due to Fees
First Claim
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1. A device for detecting an internal arc in a metal-clad electrical link, the device comprising at least a first one-way detection unit for detecting a rising edge of an internal pressure surge generated by the internal arc and propagating inside a cladding of the electrical link, the one-way detection unit including a pressure sensor disposed outside the cladding and a tapered horn-shaped duct connected to the inside of the cladding and sloping in a direction relative to a longitudinal axis of the cladding, the horn-shaped duct having a mouth opening in the cladding, and a tip connected to the pressure sensor, wherein the one-way detection unit detects the rising edge of the internal pressure surge propagating only in the direction of sloping of the horn-shaped duct.

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