Composite polymer pin insulators in silicone rubber likes other composite insulators consists of an insulating fiber glass core, HTV silicone rubber and supporting and mounting fittings.

Composite polymer pin insulators in silicone rubber are used in high voltage overhead transmission and distribution lines with voltages range from 400V~36KV. The properties of hydrophobicity and corrosion-proof of the silicone keep the outer casing of the composite pin insulators clean. Composite polymer pin insulators in silicone rubber of the Orient Power, because of the hydrophobicity and elasticity of the coating give positive result without suffering drawbacks.

Some composite pin insulators made by other insulator manufacturers at - 25°C suffered the following drawback: the lower and the upper end fittings were short-circuited as a result of the ice. This drawback is caused by the roughness and scarce hydrophobicity of the insulating surface; consequently it keeps the water that at a low temperature forms stalactites of ice. This phenomenon doesn’t happen with Composite pin type insulator in silicone rubber of Orient Power, because the surface has hydrophobicity (like drops of mercury on the table forming small balls) and having sloping sheds the water slips away very easily. The ends of the Composite polymer pin insulators in silicone rubber sheds are covered only with light frost.

All marking shall be by embossing and marking on metal fittings shall be before galvanizing. The marking shall not affect the performance of the Composite polymer pin insulators in silicone rubber.