Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Lightning Surge Response Characteristics of Non-tripping Type Earth Leakage Breakers for Impulse

충격파 부동작형 누전차단기의 뇌써지 응답 특성

  • Lee, J.B. (Korea Electrotechnology Research Institute) ;
  • Myung, S.H. (Korea Electrotechnology Research Institute) ;
  • Cho, Y.G. (Korea Electrotechnology Research Institute) ;
  • Chang, S.H. (Korea Electrotechnology Research Institute) ;
  • Kim, J.S. (Korea Maritime University) ;
  • Kil, G.S. (Korea Maritime University)
  • Published : 2002.07.10
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Abstract

The unpredictable threat of lightning surge is ever increasing in today's low-voltage power supplies. Thus Surge protection devices for AC mains are more widely used. The false-tripping of the earth leakage breaker (ELB) can be caused by the installation of surge protection devices with MOV. In order to examine the cause of malfunction, the malfunction characteristics of ELBs applied by lightning surge were investigated experimentally. As a result, all of them brought about malfunctions under 7 kV of the impulse voltage. The suitable position of MOV and use of zener diode were suggested to eliminate the problems.

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