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Overvoltage protection device with a measuring device for monitoring overvoltage protection elements

  • US 9,312,679 B2
  • Filed: 08/10/2012
  • Issued: 04/12/2016
  • Est. Priority Date: 08/12/2011
  • Status: Active Grant
First Claim
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1. An overvoltage protection device comprising:

  • one or more overvoltage protection elements, including a gas-filled overvoltage arrester, which can be short-circuited, as an overvoltage protection element; and

    a measuring arrangement for monitoring the overvoltage protection elements, wherein the measuring arrangement comprises;

    a temperature-measuring arrangement, which is in thermal contact with the gas-filled overvoltage arrester, which can be short-circuited;

    an evaluating arrangement, which identifies whether the short-circuit spring has been triggered on the basis of a measured first temperature value and a second temperature value, which are measured by the measuring arrangement at a first moment in time and a second moment in time, which is different from the first moment in time, respectively; and

    an alarm arrangement, which provides indication as to whether the short-circuit spring has been triggered, wherein the evaluating arrangement is adapted to generate the indication;

    wherein the measuring arrangement is adapted for indirectly monitoring triggering of a short circuit spring of the gas-filled overvoltage arrester.

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