33KV pin type composite insulators have good performance on anti-aging, anti-corrosion, anti-pollution and so on, for the superior materials and construction of this type polymer pin insulator.

33KV pin type composite insulators materials and construction:
The polymer pin insulator shall be pin type moulded in one single piece and supplied complete with metal end fittings. Metal fittings shall be galvanized to ISO 1461 to suit service conditions specified in clause 4.1.

The 33KV composite pin insulators shall be made of composite materials of high resistance to moisture, ultraviolet radiation, high temperatures and tropical sunshine conditions. The core shall be made of resin-impregnated glass fibres free from defects. The housing of the polymer pin insulator shall be manufactured from high quality silicone rubber.

The under surface and grooves of sheds or skirts shall be easy cleaning. 33KV pin type composite insulators Sheds shall be substantially symmetrical in shape without appreciable warping. The polymer pin insulator shall be suitable for both vertical and horizontal applications. The composite pin type insulator shall be suitable for both bare and protected conductors.

The 33KV pin type composite insulators bottom metal end fitting shall be suitable for mounting on steel cross arm. The top and side grooves shall be designed to accept conductor sizes in the range 7 –18.2mm overall diameter.

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