The Insulating Cover Of The Insulator Has Good Insulation Performance.

The insulating shield of composite tension insulator is usually made of high dielectric strength polymer or silicone rubber. These materials have high resistivity and low polarization loss, which makes it difficult for electric field to accumulate charge on the surface and inside the insulating shield of high voltage transmission line insulators. The shape design of the insulating shield of overhead power line insulators effectively increases the leakage path along the surface, reducing the tendency for surface corona and flashover to a lower level. The covering structure of the insulating shield of tension insulator improves the electric field distribution of the originally exposed parts and significantly alleviates the local field enhancement phenomenon caused by the surrounding air and moisture.

The installation of an insulating cover to cover the exposed parts of the dead end insulators makes it more difficult for rainwater, dust, and other pollutants to directly contact its insulating surface, indirectly affecting the formation of the insulating water film.