Earth-fault circuit breaker life termination detecting-protecting method and its circuit

Earth-fault circuit breaker life termination detecting-protecting method and its circuit

  • CN 1,815,252 A
  • Filed: 12/26/2005
  • Published: 08/09/2006
  • Est. Priority Date: 12/26/2005
  • Status: Active Application
First Claim
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1. ground-fault interrupter GFCI life-span stop detection holding circuit comprises:

  • The square-wave signal generation unit, the square-wave signal of generation analogue ground fault during the alternation;

    The dropout partial status generates and dropout part current path unit, during the square-wave signal of described analogue ground fault, generates the corresponding status signal of dropout partial status with ground-fault interrupter GFCI;

    Fault display unit receives the status signal that described dropout partial status generates and dropout part current path unit generates, and sends fault display signal according to described status signal.

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