Title :
Characterisation of epoxy resin bushings under aggravated service conditions
Author :
Purushottam, Y. ; Udayakumar, K. ; Dharmalingam, K.
Author_Institution :
Coll. of Eng., Anna Univ., Madras, India
Abstract :
It has been identified that highly humid operating conditions known as `aggravated service conditions´ are one of the contributory factors in the degradation of organic insulation in medium voltage switchgear components. This paper quantifies the deterious effects of relative humidity and voltage stress on the behavior of Bisphenol epoxy resin cast switchgear components. Short term and long term endurance tests were conducted using loss factor and leakage current as degradation parameters. The data generated is used to develop a generalised system model to predict the endurance of epoxy resin cast equipment under humid conditions
Keywords :
bushings; dielectric loss measurement; electric breakdown; electric current measurement; epoxy insulation; epoxy insulators; flashover; insulator contamination; insulator testing; leakage currents; surface discharges; switchgear insulation; switchgear testing; Bisphenol epoxy resin cast components; aggravated service conditions; degradation; endurance; endurance tests; epoxy resin bushings; leakage current; loss factor; medium voltage switchgear components; organic insulation; relative humidity; voltage stress; Epoxy resins; Humidity; Insulation; Insulators; Leakage current; Medium voltage; Stress; Switchgear; Testing; Thermal degradation;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1994., Proceedings of the 4th International Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-1307-0
DOI :
10.1109/ICPADM.1994.414068
