Title :
Surface conductivity of epoxy specimens subjected to partial discharges
Author :
Hudon, C. ; Bartnikas, R. ; Wertheimer, M.R.
Author_Institution :
Dept. of Eng. Phys., Ecole Polytech., Montreal, Que., Canada
Abstract :
The surface conductivity of epoxy specimens was found to increase appreciably with the exposure time to partial discharges, the change being most pronounced during the initial stages on the exposure. No definite tendency could be detected in the mean partial discharge pulse amplitude with time. Surface degradation of the epoxy was characterized by the commonly observed occurrence of pitting and deposition of droplets and crystals
Keywords :
insulation testing; organic insulating materials; partial discharges; polymers; surface conductivity; surface discharges; crystals; discharge pulse amplitude; droplets; epoxy specimens; exposure time; partial discharges; pitting; surface conductivity; surface degradation; Circuit testing; Conducting materials; Conductivity measurement; Degradation; Electrodes; Insulation; Partial discharges; Physics; Surface discharges; Voltage;
Conference_Titel :
Electrical Insulation, 1990., Conference Record of the 1990 IEEE International Symposium on
Conference_Location :
Toronto, Ont.
DOI :
10.1109/ELINSL.1990.109729
