Intelligent earth-fault circuit breaker

Intelligent earth-fault circuit breaker

  • CN 1,324,627 C
  • Filed: 07/15/2005
  • Issued: 07/04/2007
  • Est. Priority Date: 07/15/2005
  • Status: Active Grant
First Claim
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1. intelligent earth-fault circuit breaker comprises:

  • The actuating mechanism of an intelligent earth-fault circuit breaker comprises;

    a permanent magnet (202) is positioned at the position contiguous with a soft magnetic bodies (312);

    A soft magnetic bodies (312) is positioned at a sleeve, and this soft magnetic bodies (312) drives moving contact (305) and moves up and down under the effect of magnetic force;

    A closing coil (310) is wrapped in an end of the nearly permanent magnet (202) of sleeve;

    A broken coil (311) is wrapped in an end of the permanent magnet far away (202) of sleeve;

    The balanced adjusting device of contact static pressure, its balance adjustment rack (308) forms one with soft magnetic bodies, by the adjustment piece (309) that sets within it, adjusts moving contact and contacts with the reliable of fixed contact;

    A self-diagnosis system is used for inner each component capabilities of self diagnosis ground-fault interrupter;

    An overvoltage protection is used for when the input supply voltage overrate disjunction ground-fault interrupter;

    An automatic reset device is used for after earth fault is eliminated ground-fault interrupter being automatically reset;

    A pressure responsive resistor failure protective device is by detecting the inefficacy leakage current of piezo-resistance, the power line loop that cuts off piezo-resistance.

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