Evaluation of 23 kV insulator profiles with different pollution levels

Insulators used for 23 kV distribution lines working under high pollution conditions were removed from field. These insulators were evaluated in a fog chamber. The results showed that the insulator profile has a strong effect on the performance of the insulator under very heavy pollution and humidity conditions. Insulators having a simple profile electrically failed under light pollution conditions. While, insulators having a complex profile did not fail under very heavy pollution conditions. The results obtained for each insulator evaluated are presented in This work.