Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1998.07d
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- Pages.1459-1461
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- 1998
The Study on the Aging Characteristics of the Arrester Block(ZnO)
피뢰기 소자(ZnO)의 열화특성에 관한 연구
- Kim, Chan-Young (Korea Electric Power Research Institute(KEPRI)) ;
- Song, Il-Keun (Korea Electric Power Research Institute(KEPRI)) ;
- Kim, Ju-Yong (Korea Electric Power Research Institute(KEPRI)) ;
- Jeoung, Nyeon-Ho (Korea Electric Power Research Institute(KEPRI))
- Published : 1998.07.20
Abstract
This paper provides the results of analysis of lightening arrester failed in the field. XRD was used for qualitative analysis and SEM for microstructure analysis of zinc oxide (ZnO) block. The failure of lightening arrester might occur due to the following reasons: the uneven size of zinc oxide grains and cement layers. the re-crystallization of zinc oxide grains resulting from electrical stress around impurities, and the presence of too large pores(
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