Title :
Influence of fog parameters on the surface resistance of HTV silicone rubber
Author :
Zhang, H. ; Hackam, R.
Author_Institution :
Dept. of Electr. Eng., Windsor Univ., Ont., Canada
Abstract :
Testing of outdoor insulators in a fog chamber is necessary and is universally used. Fog parameters such as the pressure of the compressed air and the water flow rate feeding the nozzles to form the fog as well as the size and the speed of fog droplets impinging on the surface of the insulators play a major role in the outcome of the electrical performance test. In the present paper relationships between the air pressure, water flow rate and the air speed which are related to the distributions and the speed of the fog droplets impinging on the surface of the insulator are determined as a function of distance from IEEE-IEC standard nozzles forming the fog. The influence of the compressed air pressure and the water flow rate forming the fog on the electrical surface resistance of HTV silicone rubber is investigated. Optimized fog conditions for testing of insulators are suggested
Keywords :
environmental degradation; fog; insulation testing; silicone rubber; surface conductivity; HTV silicone rubber; air speed; compressed air pressure; droplet size; electrical surface resistance; fog testing; nozzle; outdoor insulator; water flow rate; Aging; Dielectrics and electrical insulation; Electric resistance; Electric variables measurement; Electrical resistance measurement; Insulator testing; Plastic insulation; Polymers; Rubber; Surface resistance;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1998. Annual Report. Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5035-9
DOI :
10.1109/CEIDP.1998.733846
