Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A Study on the Microstructral Uniformity and Surge Energy Capability of ZnO Varistor

ZnO 바리스터 미세조직 균일화와 새지 에너지 내량 향상에 관한 연구

  • 한세원 (한국전기연구소 신소재응용연구그룹) ;
  • 조한구 (한국전기연구소 신소재응용연구그룹) ;
  • 서형권 (고려애자(주), APK(주) 삼영중앙연구소) ;
  • 정세영 (고려애자(주), APK(주) 삼영중앙연구소)
  • Published : 1999.11.01
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Abstract

ZnO varistors have been widely used to protect power system and electronic system against overvoltages based on their excellent nonlinearity. In order to increase their protection capability, ZnO varistors are chosen by several electrical parameters according to their applications, namely 1mA DC voltage, 1eakage currents, impulse residual voltages, withstanding capability to impulse surge, and energy absorption capability. But these Parameters have scattering properties due to the nonuniformity of electrical characteristics. In this study, the effect of the microstructrual nonuniformity on the surge absorption capability of ZnO varistors.

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