Title :
Multistress aging of epoxy-mica insulation system
Author :
Srinivas, M.B. ; Ramu, T.S.
Author_Institution :
Dept. of High Voltage Eng., Indian Inst. of Sci., Bangalore, India
Abstract :
Proposes a novel empirical multifactor stress model which involves an additional mechanical (vibrational or fatigue) stress. The model is based on data obtained on epoxy-mica-insulated high-voltage generator coils. The possible degradation mechanisms under combined stress are discussed, highlighting those under fatigue stress based on Miner´s cumulative damage concept. It is concluded that the empirical model presented here can be employed to estimate the insulation life under service conditions with a reasonable degree of accuracy
Keywords :
ageing; coils; composite insulating materials; insulation testing; life testing; machine insulation; Miner´s cumulative damage concept; ageing; degradation mechanisms; empirical multifactor stress model; epoxy-mica insulation system; high-voltage generator coils; insulation life; mechanical stress; service conditions; Aging; Conducting materials; Equations; Fatigue; Frequency; Insulation; Power system modeling; Thermal stresses; Vibrations; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1992. Annual Report. Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0565-5
DOI :
10.1109/CEIDP.1992.283201
