Title :
The ageing behaviour of epoxy resin at DC voltage
Author_Institution :
High Voltage Lab., Delft Univ. of Technol., Netherlands
Abstract :
The ageing behaviour is studied of samples of epoxy resin which contain an air filled void. Therefore ageing tests up to 2500 h were carried out. Weibull statistics are used for the evaluation. The measured distributions appeared to be bimodal. The early breakdowns are assumed to be caused by material defects. The electric life of the test samples has been found to be determined by some kind of electric ageing. The role of partial discharges in ageing is discussed
Keywords :
Weibull distribution; ageing; electric breakdown; epoxy insulation; insulation testing; life testing; partial discharges; voids (solid); 2500 hour; DC voltage; Weibull statistics; ageing behaviour; air filled void; bimodal distribution; breakdown; electric ageing; electric life; epoxy resin; material defects; partial discharges; Aging; Breakdown voltage; Electric breakdown; Epoxy resins; Insulation; Region 1; Region 2; Shape; Testing; Weibull distribution;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1995. Annual Report., Conference on
Conference_Location :
Virginia Beach, VA
Print_ISBN :
0-7803-2931-7
DOI :
10.1109/CEIDP.1995.483706
