Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Two-Stage Surge Protection Device with Varistor and LC Filter.

바리스터와 LC필터를 사용한 2단 서지보호장치

  • Lee, B.H. (Dept. of Electrical Engineering, Inha University) ;
  • Kim, J.H. (Dept. of Electrical Engineering, Inha University) ;
  • Lee, K.O. (Dept. of Electrical Engineering, Inha University)
  • 이복희 (인하대학교 전기공학과) ;
  • 김지훈 (인하대학교 전기공학과) ;
  • 이경옥 (인하대학교 전기공학과)
  • Published : 1996.11.16
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Abstract

This paper deals with the two stage surge protection device by using varistor and LC low pass filter. Recently varistor alone has been used with overvoltage protection devices for the AC power mains and has same problems associated with high remnant voltage and noise. In this work, in order to improve the cutoff performance of surge protection device, the lightning surge protection device having two stage hybrid circuit for an AC single phase mains was designed and fabricated. Operation characteristics and surge clamping performance of the surge protection device in an $8/20{\mu}s$ surge current are investigated. As a consequence, it is found that the proposed two stage surge protective device for AC power mains has a variety of advantages such as a smaller clamping voltage, high frequency noise reduction and large clamping capacity.

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