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Suspension insulator is one main of insulator for using on overhead transmission line with high voltage, which is made from silicone rubber or porcelain. Polymer insulator is made from siliocne rubber.

The properties of porcelain suspension insulator
The high-pressure porcelain suspension insulator suitable for industrial dust, chemicals, salinity, coastal and foggy areas, insulation for high-voltage overhead transmission and distribution wires on the road and fixed conductors generally assembled into insulator string for different voltage levels, filthy power lines.

The properties composite suspension insulator
This advanced weathershed material resists tracking and erosion caused by surface leakage for lower energy losses, longer life and improved contamination performance. The steel end fittings are heat treated for consistent material characteristics which facilitates development of high tensile strength in the crimped attachment to the fiberglass rod.

 the performance of polymer insulators is better than porcelain insulator, but the life of porcelain insulators is longer.

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