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What role does the composite insulator FRP core play?

What is a composite insulator?
Composite insulator is also called polymer silicone rubber insulator, its main structure by the FRP core, silicone rubber housing, silicone rubber shed and with the end fittings of four parts. The silicone rubber shed is made from high temperature vulcanization silicone rubber, FRP core is glass fiber reinforced material and glass fiber reinforced plastic composite materials of epoxy resin as matrix, and with the end fittings is the surface coated galvanized layer of carbon steel or carbon structural steel.

composite insulator              composite long rod insulator
   composite insulator                                                                composite long rod insulator 

Composite insulator FRP core function:
FRP core is internal insulation of composite insulator, is designed to ensure its mechanical properties, core rod is usually made up of immersed in resin fiber glass, has reached the maximum tensile strength, have the effect of bending. For example, generally 30KN is 300KN 400KV composite insulator mechanical bending strength, which is composite insulator FRP core function.

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