Some remarks regarding the test cells used for electric strength measurements

Author

Mazzanti, G. ; Montanari, G.C. ; Peruzzotti, F. ; Zaopo, A.

Author_Institution

Dept. of Electr. Eng., Bologna Univ., Italy

Volume

2

fYear

1996

fDate

16-19 Jun 1996

Firstpage

474

Abstract

This paper deals with the influence of the test cell on the results of electric strength measurements performed on polymeric insulating materials. Two different types of electrodes are considered, i.e. rods and Pseudo-Rogosky configurations, surrounded by different media, that is, oil, SF₆, and epoxy resin. An ethylene-propylene-rubber (EPR)-based insulation was tested, in the form of flat specimens having different thickness. The results show that the scale and shape parameters of the two-parameter Weibull function employed to fit the breakdown data significantly changes when different specimen thickness, surrounding media and types of electrodes are used

Keywords

electric breakdown; electric strength; electrodes; ethylene-propylene rubber; insulation testing; test equipment; EPR; breakdown data; electric strength measurements; electrode types; ethylene-propylene-rubber insulation; insulation breakdown testing; polymeric insulating materials; scale parameters; shape parameters; specimen thickness; surrounding media; two-parameter Weibull function; Dielectrics and electrical insulation; Electric variables measurement; Electrodes; Epoxy resins; Insulation testing; Materials testing; Performance evaluation; Petroleum; Plastic insulation; Polymers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 1996., Conference Record of the 1996 IEEE International Symposium on

Conference_Location

Montreal, Que.

ISSN

1089-084X

Print_ISBN

0-7803-3531-7

Type

conf

DOI

10.1109/ELINSL.1996.549385

Filename

549385