Effect of oil quality and field configuration on steep-front breakdown strength of processed pressboard

Author

Lin, Ding ; Raghuveer, M.R. ; McDermid, W.

Author_Institution

Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, Man., Canada

Volume

1

Issue

1

fYear

1994

fDate

2/1/1994 12:00:00 AM

Firstpage

82

Lastpage

88

Abstract

The surface and puncture strength of flat processed pressboard samples have been measured under application of steep fronted short duration pulses in uniform and nonuniform field configurations. With the latter configuration the strengths have also been measured with new, field aged and reclaimed mineral oil. Tests have also been conducted to simulate retrofilling of transformers in the field with reclaimed oil. It is shown that with the exception of tests conducted with new mineral oil, a similar strength is obtained under all of the above conditions; with new oil higher strengths are obtained

Keywords

composite insulating materials; electric strength; impulse testing; insulating oils; insulation testing; power transformers; transformer insulation; transformer testing; field aged mineral oil; flat processed pressboard samples; nonuniform field configuration; oil quality; puncture strength; reclaimed mineral oil; steep fronted short duration pulses; steep-front breakdown strength; surface strength; test assembly; transformer insulation; transformer retrofilling; uniform field configuration; Dielectrics and electrical insulation; Electric breakdown; Electrodes; Minerals; Petroleum; Power system reliability; Power transformer insulation; Pulse measurements; Pulse power systems; Testing;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.300235

Filename

300235