Title :
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
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;
Conference_Titel :
Electrical Insulation, 1996., Conference Record of the 1996 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-3531-7
DOI :
10.1109/ELINSL.1996.549385
