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High voltage porcelain disc suspension insulator

High voltage porcelain disc suspension insulator is composed of Insulator shells, metal parts, cotter keys.

High voltage porcelain disc suspension insulator

High voltage porcelain disc suspension insulator, insulator shells: it is made of wet-process porcelain or toughened glass. Shells shall be sound and free from defects that might adversely affects the insulator. Shell surface: the surface of shells exposed after the assembly, which shall be glazed for porcelain insulators, shall be relatively smooth and free of imperfections.

High voltage porcelain disc suspension insulator shall be furnished with a hump-type cotter key, which can prevent the cotter bolt being pulled out of the insulator cap during the normal handling and use. So the material of the cotter key is critically important. The material of the cotter key is usually bronze, brass, austenitic stainless, or aluminum.

High voltage porcelain disc suspension insulator, Low-frequency dry flashover test, Low-frequency wet flashover test, Critical impulse flashover tests-positive and negative, radio-influence voltage tests.

 

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