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Dielectric Strength of Macro Interface between Epoxy and Rubber According to the Interface Condition  

Oh, Yong-Cheul (광운대학교 전기공학과)
Bae, Duck-Kweon (충주대학교 안전공학과)
Kim, Jin-Sa (광운대학교 전기공학과)
Kim, Chung-Hyeok (광운대학교 교양학부)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.55, no.12, 2006 , pp. 581-585 More about this Journal
Abstract
Macro interfaces between two different bulk materials which affect the stability of insulation system exist inevitably in the complex insulation system using in extra high voltage (EHV) electric devices. In this paper, Interface between epoxy and ethylene propylene diene terpolymer (EPDM) was selected as an interface in electrical insulation system and the AC dielectric strength of the interface was investigated. Air compress system was used to give pressure to the interface. Specimens were prepared in various ways to generate different surface conditions for each type of interface. Increasing interfacial pressure, decreasing surface roughness and spreading oil over surfaces improve the AC interfacial dielectric strength. Especially, the dielectric strength was saturated at certain interfacial pressure.
Keywords
Macro interface; Dielectric strength; Epoxy; EPDM; Oil;
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