Title :
Polymer insulator test evaluation
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
Nonceramic insulators consist of a fiberglass core rod, metal end fittings, and weathershed housing. The weathershed homing is made of a polymeric material. Since the weathershed materials may be subject in service to degradation of aging due to harsh environmental conditions, laboratory tests are used to evaluate their performance. The use of fog chambers is one of the most commonly used laboratory tests. A test program was designed to study the joint effects of fog salinity and pre-deposited contamination on polymer insulators in a fog chamber. The paper reviews the evaluation aspects of test data related to leakage current pulses, cumulative charges and pre-deposit flashover voltages.
Keywords :
ageing; flashover; insulator contamination; insulator testing; leakage currents; polymer insulators; cumulative charges; fiberglass core rod; fog chambers; fog salinity; harsh environmental conditions; insulator aging; insulator performance tests; leakage current pulses; metal end fittings; nonceramic insulators; polymer insulator test evaluation; pre-deposit flashover voltages; pre-deposited contamination; weathershed housing; weathershed materials; Aging; Contamination; Degradation; Insulator testing; Laboratories; Materials testing; Metal-insulator structures; Optical fiber testing; Plastic insulation; Polymers;
Conference_Titel :
Electric Power Engineering, 1999. PowerTech Budapest 99. International Conference on
Conference_Location :
Budapest, Hungary
Print_ISBN :
0-7803-5836-8
DOI :
10.1109/PTC.1999.826555
