DocumentCode :
1848493
Title :
Study on surface degradation of polymer insulating materials caused by leakage current
Author :
Homma, H. ; Takahashi, T. ; Taniguchi, T. ; Izumi, K.
Author_Institution :
Dept. of Electr. Eng., Central Res. Inst. of Electr. Power Ind., Yokosuka, Japan
fYear :
1994
fDate :
23-26 Oct 1994
Firstpage :
373
Lastpage :
378
Abstract :
Some artificial aging tests were performed using test rods made of Silicone Rubber (SR) and Ethylene Propylene Rubber (EPDM), based on the Rotating Wheel Dip Test (RWDT) method and the Salt Fog Chamber Test (SFCT) method, and aspects of the surface degradation were evaluated. Following the tests, it was concluded that the surface degradation of polymer insulating materials is directly related to the partial discharge and that measurement of the cumulative charge of the leakage current is useful in evaluating the degradation. Moreover, an energized exposure test using prototype composite insulators was carried out for five years. The accelerating factor from the artificial aging test for actual use was estimated by comparing the amounts of cumulative charge in the artificial aging test and in the exposure test
Keywords :
silicone rubber; accelerating factor; artificial aging tests; composite insulators; cumulative charge; energized exposure test; ethylene propylene rubber; leakage current; partial discharge; polymer insulating materials; rotating wheel dip test; salt fog chamber test; silicone rubber; surface degradation; test rods; Aging; Performance evaluation; Plastic insulation; Polymers; Rubber; Strontium; Surface discharges; Testing; Thermal degradation; Wheels;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1994., IEEE 1994 Annual Report., Conference on
Conference_Location :
Arlington, TX
Print_ISBN :
0-7803-1950-8
Type :
conf
DOI :
10.1109/CEIDP.1994.591793
Filename :
591793
Link To Document :
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