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Outdoor Anti-Pollution Electrical Post Ceramic Insulators
The main cause of failure of the overhead line insulator is flashover, which occurs between line and earth during abnormal overvoltage in the system. During this flashover, the huge heat produced by arcing causes puncher in the insulator body. Viewing this phenomenon the materials used for electrical insulator has to possess some specific properties.
The materials generally used for the insulating purpose is called insulating material. For successful utilization, this material should have some specific properties as listed below-