Is the copper belt on the high voltage line good for the human body?
Similarly, the gap between the insulating surface and the sheath may also exist. It is a factor causing partial discharge. Therefore, a shielding layer of semi conductive material is added to the surface of the insulating layer, which is shielded from the insulation
Mainly to improve the electric field distribution: the conductor of the cable is twisted by a plurality of wires, and the air gap is easy to form between the insulating layer and the insulating layer. The surface of the conductor is not smooth, and the electric field can be concentrated.
