Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2003.07b
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- Pages.744-746
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- 2003
A Study on the Improvement of ZnO Varistor for Distribution Class Surge Arrester(18kV, 5kA)
배전급 피뢰기(18kV, 5kA)용 산화아연바리스타의 성능향상에 관한 연구
- Yoo, Deok-Son (APK) ;
- Yoon, Han-Soo (APK) ;
-
Kim, Suk-Soo
(KERI)
;
- Choi, Yeon-Gyu ;
- Jang, Sung-Do (APK)
- Published : 2003.07.10
Abstract
A ZnO varistor with reference voltage 250V/mm was fabricated through the control of particle size in slurry and the variation of sintering conditions. It was found that to measure the flatness of the V-I characteristic curve in the small-current region and the flatness of the V-I characteristic curve in a large-current region was improved nonlinearity of the fabricated ZnO varistor. According to the IEC 60099-4 was measured the accelerated aging test and high current test of the distribution class surge varistor which is excellent in respect to the property of ZnO varistor.
Keywords
- ZnO varistor;
- Surge arrester;
- Reference voltage;
- Residual voltage;
- High-current impulse current;
- Accelerated aging test