International Journal of the Society of Materials Engineering for Resources
Online ISSN : 1884-6629
Print ISSN : 1347-9725
ISSN-L : 1347-9725
Effects of a Small Cavity on the Flashover Phenomenon
Makoto NISHIDAM. S. A. A. HAMMAMNoboru YOSHIMURA
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1995 Volume 3 Issue 1 Pages 115-124

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Abstract
The flashover characteristics of the polymer insulator and the effects of a small cavity on the discharge column are investigated. It is observed that the cavity had no noticeable effect on the flashover phenomenon under positive polarity. On the other hand, for negative polarity there seems to be a relationship between the flashover voltage and the needle electrode position away from the cavity opening. It is confirmed that the cavity near high voltage electrode decreases the flashover voltage with negative polarity application.
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© The Society of Materials Engineering for Resources of JAPAN
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