Grounding and short circuit fault indicator

Grounding and short circuit fault indicator

  • CN 2,501,061 Y
  • Filed: 10/22/2001
  • Issued: 07/17/2002
  • Est. Priority Date: 10/22/2001
  • Status: Active Grant
First Claim
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1. ground connection and short circuit line fault detector is characterized in that it comprises:

  • Microprocessor is used to receive the signal that following each circuit is sent, and produces the drive signal of control indicating device;

    Sudden change amount signal circuit is used for the unexpected variation of detection line electric current, and its output connects the data input pin of microprocessor;

    The current signal circuit is used for having or not of detection line electric current, and its output connects the data input pin of microprocessor;

    Voltage signal circuit is used for the size variation of detection line voltage, and its output connects the simulated data input end of microprocessor;

    The harmonic signal circuit is used for the size variation of detection line harmonic current, and its output connects the simulated data input end of microprocessor;

    Indicating device is used for indication fault, and its input connects the output of microprocessor;

    Power supply is for above circuit provides power supply.

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