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http://dx.doi.org/10.5207/JIEIE.2007.21.1.118

Effects of the Injected Number and Amplitude of 8/20 [μs] Impulse Current on the Life of ZnO Varistors  

Lee, Bok-Hee (인하대학교 전기공학과)
Li, Feng (인하대 대학원 전기공학과)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.21, no.1, 2007 , pp. 118-124 More about this Journal
Abstract
This paper presents the effects of the injected number and amplitude of impulse current on the service life of ZnO varistors for low voltages. To analyze the effects of lightning impulse currents on the performance of ZnO varistors, the measurements of resistive leakage current and power dissipation at the power frequency ac voltage before and after the injections of the $8/20[{\mu}s]$ impulse currents were made. As a consequence, the duration and amplitude of resistive leakage current flowing through ZnO varistor were increased with increasing the number of injections of the $8/20[{\mu}s]$ impulse currents. It is desirable that the service life of ZnO varistors should be evaluated as a function of the number and amplitude of lightning impulse current.
Keywords
Zinc oxide(ZnO) varistor; Leakage current; $8/20[{\mu}s]$ impulse current; Surge simulator system; Life of ZnO varistor;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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