Abstract: This paper presents experimental work conducted on polymeric insulators. The inclined plane test IEC-60587 method using to determine the characterization of polymeric (HTV Silicone rubber and silicone rubber) insulating materials. The constant voltage method used for testing. Testing under AC, positive DC and negative DC voltages are according to standard. The comparative performance of the two materials and the effect of different voltage application ware investigated. In Silicone rubber material showed more erosion comparable to the HTV silicone Rubber. Mass loss reduction is found by calculating the weight difference of samples before and after IPTET. After the experiment compare the mass loss reduction of both materials at different voltage level condition.

Keywords: HTV Silicone rubber, Silicone rubber, tracking, erosion, IEC 60587, Inclined plane test.