Device and method for avoiding pressure responsive resistor failure and earth-fault circuit breaker

Device and method for avoiding pressure responsive resistor failure and earth-fault circuit breaker

CN
  • CN 1,815,658 A
  • Filed: 02/05/2005
  • Published: 08/09/2006
  • Est. Priority Date: 02/05/2005
  • Status: Active Application
First Claim
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1. , a kind of device of avoiding pressure responsive resistor failure comprises:

  • A piezo-resistance, an end connects the input of a power line, and the other end connects another power line by the disconnect of tripper;

    The failure detection device of a piezo-resistance comprises a detector that detects the piezo-resistance leakage current, when piezo-resistance leakage current that described detector detected reaches predetermined value, exports a triggering signal;

    A tripper connects the trigger end of the failure detection device of described piezo-resistance, under the excitation of described triggering signal, disconnects described disconnect;

    A pressure responsive resistor failure display unit comprises indicator light switch and indicator light by described tripper control.

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