Title :
Epoxy/mica insulation condition assessment using AC current method
Author :
Hao, Yanpeng ; Wang, Guoli ; Xie, Hengkun
Author_Institution :
State Key Lab. of Electr. Insulation for Power Equip., Xi´´an Jiaotong Univ., China
Abstract :
In this paper, accelerated multistresses aging tests in the laboratory have been conducted on electric machine stator epoxy/mica insulation. In different aging stages, AC current tests and breakdown tests were performed. The characteristics of AC current of stator insulation were analyzed and the voltage Upi2, at which the second point of current rapid increase appears, was investigated. The correlation between the voltage Upi2 and the residual breakdown voltage was also analyzed
Keywords :
ageing; electric machines; epoxy insulation; insulation testing; life testing; machine insulation; machine testing; mica; stators; AC current tests; Upi2 voltage; accelerated multistresses aging tests; aging stages; breakdown tests; electric machine stator epoxy/mica insulation; residual breakdown voltage; Accelerated aging; Dielectrics and electrical insulation; Electric breakdown; Electric machines; Insulation testing; Laboratories; Life estimation; Performance evaluation; Stators; Voltage;
Conference_Titel :
Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on
Conference_Location :
Himeji
Print_ISBN :
4-88686-053-2
DOI :
10.1109/ISEIM.2001.973775
