Surface flashovers on metal-oxide varistor blocks

被引：0
|
作者：
Darveniza, M [1 ]
Saha, TK [1 ]
机构：
[1] Univ Queensland, St Lucia, Qld 4072, Australia
来源：
PROCEEDINGS OF THE 1998 IEEE INTERNATIONAL CONFERENCE ON CONDUCTION AND BREAKDOWN IN SOLID DIELECTRICS - ICSD '98 | 1998年
关键词：
D O I：
10.1109/ICSD.1998.709311
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Extensive studies have been made of surface flashovers on varistor blocks using multipulse (MP currents which simulate multiple stroke lightning ground flashes. The MP results are compared with those obtained with single-pulse (SP) currents and with high temporary overvoltages (TOV) at 50Hz. The blocks used were mostly of 5kA rating as commonly used in distribution surge arresters. MP can cause flashovers not evident with standard SP tests; they are very dependent on the quality of the dielectric on the surface and are independent of the surrounding gas.
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页码：406 / 409
页数：4
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