Title :
Effect of gas impregnation in silicone rubber on electrical tree initiation
Author :
Kamiya, Y. ; Muramoto, Y. ; Shimizu, N.
Author_Institution :
Meijo Univ., Nagoya
Abstract :
We consider that electrical tree initiation is caused by collision impact of electrons which are accelerated in polymer free volume by electric field. It is expected that gas in free volume in SiR affects the electrical tree initiation characteristics. The electrical tree initiation voltage is increased by vacuum evacuation, SF6 impregnation, and air re-impregnation after vacuum evacuation. It is important to investigate the influence of gas impregnation for the improvement of the electrical tree resistance in SiR. In this paper, we will report the effect of gas impregnation on electrical tree initiation in SiR.
Keywords :
electric field effects; polymers; silicone rubber; trees (electrical); collision impact; electrical tree initiation; gas impregnation; polymer; silicone rubber; vacuum evacuation; Dielectrics and electrical insulation; Electrodes; Needles; Petroleum; Power cable insulation; Power cables; Rubber; Sulfur hexafluoride; Trees - insulation; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2007. CEIDP 2007. Annual Report - Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4244-1482-6
Electronic_ISBN :
978-1-4244-1482-6
DOI :
10.1109/CEIDP.2007.4451513
