Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Change of the Microstructure of ZnO Arrester block by Lightning Surge Current and Ageing test

뇌서지전류와 Ageing에 의한 산화아연형 피뢰기 소자의 미세구조변화

  • Lee, Bok-Hee (Dept. of Electrical Engineering, Inha University) ;
  • Kang, Sung-Man (Dept. of Electrical Engineering, Inha University)
  • 이복희 (인하대학교 전기공학과) ;
  • 강성만 (인하대학교 전기공학과)
  • Published : 2000.07.17
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Abstract

This paper deals with the change of the micro-structure of ZnO associated with lightning surge current and ageing test. In this work, a surge current generator which can produce 8/20 [${\mu}s$], 6 [kA] impulse current is designed and fabricated to simulate the lightning impulse current. The residual voltage and leakage current flowing to ZnO blocks are observed. Also a compensation circuit was used in resistive current measurement. The micro-structures of ZnO arrester block were significantly changed by lightning surge current and accelerated temperature ageing test.

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