Electrical insulating characteristics of polymeric materials under wetting and contaminated conditions-results of CIGRE round robin test

Author

Maekawa, Y. ; Mizuno, Y. ; Naito, K. ; Koshino, H. ; Shinokubo, H. ; Ishiwari, M.

Author_Institution

Nagoya Inst. of Technol., Japan

fYear

1998

fDate

27-30 Sep 1998

Firstpage

615

Lastpage

618

Abstract

Polymer insulators are considered to have a higher withstand voltage under contaminated conditions compared with porcelain or glass ones. In the case of polymer insulators with silicone rubber (SIR) sheds, it is said that hydrophobicity of the surface is maintained for a long period because of migration of low molecular weight silicone from the bulk of SIR to the surface. However, the characteristics of polymer insulators after a long period of use have not been well evaluated. Fourth (4th) round robin test (RRT) has been conducted under the direction of CIGRE WG15.04 in order to investigate the long term reliability of polymeric materials under wet and contaminated conditions. Seven institutes participated including us to the RRT in the world. This paper reports the results of the RRT of our group

Keywords

ethylene-propylene rubber; insulator contamination; wetting; CIGRE round robin test; EPDM; contamination; electrical characteristics; polymer insulating material; reliability; silicone rubber shed; surface hydrophobicity; wetting; withstand voltage; Dielectrics and electrical insulation; Glass; Materials testing; Plastic insulation; Polymers; Porcelain; Round robin; Rubber; Surface contamination; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 1998. Proceedings of 1998 International Symposium on

Conference_Location

Toyohashi

Print_ISBN

4-88686-050-8

Type

conf

DOI

10.1109/ISEIM.1998.741818

Filename

741818