International Conference on Electrical and Electronics Engineering (ELECO 99), Turkey, pp.84-87
Electrical aging of insulators is associated with a wide variety of phenomena such as breakdown, discharges, treeing, electron interactions with charges, phonons, matters, etc. Several test methods have been developed to examine the performance of polymeric materials, however usually they exhibit too many random factors associated with them, which reduce their reliability. Surface tracking is one of the severe degradation mechanisms observed on polymeric insulators.
In this study, by using the ASTM D 2303 Inclined Plane Tracking Test method the effects of longitudinal compressive and tensile stress, ultraviolet (UV) radiadion and wind pressure from different positions with respect to the surface of the sample under test have been investigated in detail. The structure and topography of surface tracking patterns generated on the surface of polyester resin have been examinated using fractal dimension model.