Electrical characteristics of environmentally friendly insulating oils

Author

Arazoe, S. ; Saruhashi, D. ; Sato, Y. ; Yanabu, S. ; Okabe, S. ; Ueta, G.

Author_Institution

Dept. of Electr. Eng., Tokyo Denki Univ., Tokyo, Japan

fYear

2010

fDate

17-20 Oct. 2010

Firstpage

1

Lastpage

4

Abstract

In a search for mineral oil substitutes, we investigated the characteristics of environmentally friendly silicone oil and ester oil. The electrical performance was assessed in terms of the breakdown, streaming electrification characteristics and the volume resistivity. The burning characteristics of each oil were also investigated. The temperature dependence of the breakdown voltage in an oil unit and the surface breakdown characteristics in a composite insulating system comprising an insulating oil and an immersed insulator were determined. We also investigated the temperature dependence of the charge density in oil. The charge density in silicone and mineral oils increased with temperature, with maximum values at ~100°C and ~60°C, respectively. By contrast, the charge density in ester oil decreased with increasing temperature and was maximum at ≤ 30°C.

Keywords

combustion; electric breakdown; electrical resistivity; insulating oils; silicone insulation; temperature; breakdown voltage; burning characteristics; charge density; composite insulating system; electrical characteristics; electrical performance; electrification characteristics; environmentally friendly insulating oil; ester oil; immersed insulator; mineral oil substitute; oil unit; silicone oil; surface breakdown; temperature dependence; volume resistivity; Electrodes; Ignition; Minerals; Oils; Petroleum; Temperature; Temperature dependence;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena (CEIDP), 2010 Annual Report Conference on

Conference_Location

West Lafayette, IN

ISSN

0084-9162

Print_ISBN

978-1-4244-9468-2

Type

conf

DOI

10.1109/CEIDP.2010.5723944

Filename

5723944