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Partial-discharge measuring device

  • US 5,804,972 A
  • Filed: 01/17/1996
  • Issued: 09/08/1998
  • Est. Priority Date: 03/01/1995
  • Status: Expired due to Term
First Claim
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1. A device for detecting partial discharges in a gas-insulated, high-voltage system, comprising:

  • a plate-shaped electrode inserted in an electrically insulated manner into a funnel-shaped opening of a metal enclosure, the opening defined by a flanged attachment of the metal enclosure;

    a flange arranged outside the metal enclosure, the flange being supported by the flanged attachment;

    an annular gap antenna arranged within an inner surface of the funnel-shaped opening;

    a coaxial measuring cable connected to a measuring device, the cable having a shield surrounding a shielded conductor; and

    a tapering adaptor conductor having a coaxially-arranged inner conductor and outer conductor, wherein the inner conductor is formed by a supporting body which supports the plate-shaped electrode and is connected to the shielded conductor, and the outer conductor is connected to the shield and includes a first portion formed by the inner surface of the flanged attachment;

    wherein the first portion of the outer conductor and a first portion of the inner conductor, formed by an outer surface of the supporting body, are curved such that the first portions have diameters which vary non-linearly.

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