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Ceramic pin type insulator distribution insulator

Distribution pin insulators include porcelain pin insulators and silicone rubber pin insulators at present. Ceramic pin type insulator distribution insulator can be divided into 3 kinds, such as ANSI C29.5, ANSI C29.5 and IEC-BS insulator.

Ceramic pin type insulator arc requirement:
In service care must be given to protecting the end fittings of Ceramic pin type insulators from the melting effects of power arc currents. If an arc is allowed to root on the end fitting of a Ceramic pin insulator, adjacent to the porcelain coating, the heat of arc is likely to cause sufficient damage to allow water ingress. This will result in failure of the porcelain pin insulator and the ceramic pin insulator should be replaced. Accordingly all porcelain pin insulators should be fitted with carefully designed arc protection devices.

Ceramic pin type insulator                 distribution insulator

Ceramic pin type insulator distribution insulator flashover voltage:
A flashover arc is a breakdown and conduction of the air around or along the surface of the insulator, causing an arc along the outside of the electrical insulator. They are usually designed to withstand this without damage.Flashover voltage is the voltage that causes a flash-over arc.

Most high voltage ceramic pin insulators are designed with a lower flashover voltage than puncture voltage, so they flash over before they puncture, to avoid damage.

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