Breakdown characteristics of oil-polymer composite insulation under AC and DC voltages

Author

Nagao, M. ; Jayaram, S. ; Sugio, M. ; Kosaki, M.

Author_Institution

Toyohashi Univ. of Technol., Japan

fYear

1999

fDate

1999

Firstpage

140

Lastpage

143

Abstract

The breakdown characteristics of silicone oil-polyethylene composite insulation under ac and dc voltages has been studied using the needle-plane electrode system. Higher breakdown voltages have been observed with LDPE film as a barrier for both polarities, although the effect was more significant under positive polarity. Breakdown voltages under ac voltages were significantly lower than those measured under dc with both polarities; however, breakdown voltages with LDPE film were higher than those with oil alone

Keywords

composite insulating materials; electric breakdown; insulating oils; polyethylene insulation; polymer films; silicone insulation; AC voltages; DC voltages; LDPE film; breakdown characteristics; breakdown voltages; needle-plane electrode system; oil-polymer composite insulation; positive polarity; silicone oil-polyethylene composite insulation; Breakdown voltage; Electric breakdown; Electrodes; Needles; Oil insulation; Petroleum; Polyethylene; Polymer films; Silicon on insulator technology; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Dielectric Liquids, 1999. (ICDL '99) Proceedings of the 1999 IEEE 13th International Conference on

Conference_Location

Nara

Print_ISBN

0-7803-4759-5

Type

conf

DOI

10.1109/ICDL.1999.798889

Filename

798889