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What material is the best insulator?

The insulator can be made by porcelain, glass and silicone rubber used for high voltage power lines. With the economic developing, silicone rubber insulator gradually replaces porcelain and glass insulator, which become the best insulator in this century.

best insulator

silicone rubber insulator

Silicone rubber insulator is also called composite insulator and composite designs generally employ a fiberglass rod or hollow core for mechanical strength, with an outer housing made from either silicone rubber, EPDM, FRP or EPR.

Compared to traditional insulator, the advantages of best insulator-silicone rubber insulator have
◆ Lighter weight
◆ Less breakage
◆ Improved seismic performance
◆ More flexibility in design
◆ Lower Installation cost
◆ Greater durability
◆ And more aesthetically pleasing line design

For example, composite suspension insulator has lighter weight and lower cost than porcelain suspension insulator used for high voltage transmission and distribution lines.

According to these reasons, I think silicone rubber insulator is the best insulator.


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