Title :
Evaluation of surface degradation of polymer insulating materials related to leakage current
Author :
Homma, Hiroya ; Takahashi, Takeshi ; Taniguchi, Takeshi ; Izumi, Kiyotaka
Author_Institution :
Yokosuka Res. Lab., Kanagawa, Japan
Abstract :
Artificial aging tests are performed using test rods made of silicone rubber (SR) and ethylene propylene diene monomer (EPDM), based on the rotating wheel dip test (RWDT) method and the salt chamber test (SFCT) method. Aspects of surface degradation are evaluated. It is concluded that the surface degradations of polymer insulating materials are directly related to the partial discharge, and that the cumulative charge of leakage current on the surface of test specimens is useful in evaluating degradation aspects. It is also determined that the RWDT is useful in comparing certain materials regarding their resistance to tracking and erosion, and that the SFCT is competent for evaluating surface characteristics
Keywords :
polymers; EPDM; artificial ageing tests; cumulative charge; erosion resistance; ethylene propylene diene monomer; leakage current; partial discharge; polymer insulating materials; rotating wheel dip test; salt chamber test; silicone rubber; surface characteristics; surface degradation; test rods; test specimens; tracking resistance; Aging; Performance evaluation; Plastic insulation; Polymers; Rubber; Strontium; Surface discharges; Surface resistance; Testing; Thermal degradation;
Conference_Titel :
Electrical Electronics Insulation Conference and Electrical Manufacturing & Coil Winding Conference, 1993. Proceedings., Chicago '93 EEIC/ICWA Exposition
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-0847-6
DOI :
10.1109/EEIC.1993.631305
