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A Trip Coil Fault Detection of Circuit Breaker

차단기 트립코일 이상감지 장치

  • 윤주혁 (경성대학교 메카트로닉스공학과) ;
  • 이종헌 (경성대학교 공대 메카트로닉스공학과) ;
  • 박노식 (세웅테크) ;
  • 이동희 (경성대학교 메카트로닉스공학과)
  • Received : 2010.10.09
  • Accepted : 2010.12.11
  • Published : 2011.02.28

Abstract

The circuit breaker of power distribution board is essential part for the protection of electrical disaster from load short, trouble of power system. For the normal operation of circuit breaker, trip coil of the circuit breaker can cut the mechanical contact of circuit breaker from the detection of power system troubles. This paper presents a design and experimental results of trip coil fault detection system for the real time monitoring of the circuit breaker. The designed system is consisted by the trip coil fault detector which is connected to the each circuit breaker and remote monitoring unit. The trip coil fault detector can detect the impedance and operating voltage of the trip coil, and the detected values are compared with the normal state. And the remote monitoring unit can be connected to the 32 channels of trip coil fault detectors by serial communication. From the designed system, the fault and normal states of the trip coil can be remotely monitored in real time. The designed system is verified by the practical circuit breaker of power distribution board. And the results shows the effectiveness of the designed system.

Keywords

References

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