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Entire station post insulator

 Entire station post insulator is attached to support and insulate the conductors from the ground. The Entire station post insulators provide necessary insulation between line conductors and supports and thus prevent any leakage current from conductors to earth.

Entire station post insulator

The properties of Entire station post insulator
◆ High mechanical strength in order to withstand conductor load, wind load etc.
◆ High electrical resistance of insulator material in order to avoid leakage current to earth
◆ The insulator material should be non-porous, free from impurities and cracks otherwise the permittivity will be lowered.
◆ High ratio of puncture strength to flashover
◆ High relative permittivity of insulator material in order that dielectric strength is high

According to insulator material, Entire station post insulator can be divided into
◆ Porcelain station post insulator
Polymer post insulator
◆ Glass post insulator

Entire station post insulator is normally used in substations and stations, also called solid core insulators and used for 10kv to 1100kv.

 

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