Electric field relaxation shield, gas insulated bushing and manufacturing method of electric field relaxation shield

摘要

Problem to be solved: to obtain an electric field relaxation shield capable of securing insulation reliability and miniaturization.Solution: the electric field relaxation shield 10 is provided in a gas insulated bushing 1 having an insulator tube 4 in which an insulating gas is sealed and a central conductor 3 which is a conductor disposed inside the insulator tube 4.The field relaxation shield 10 has an insulator 11 having a cylindrical portion 13 having a cylindrical shape and a ring portion 14 having a shape opened from the end of the cylindrical portion 13 to the opposite side of the central axis of the cylindrical portion 13, and an outer peripheral surface 16 of the cylindrical portion 13 opposite to the central axis side and an outer peripheral surface of the ring portion A conductive layer 12 covering the entire portion of 6 is connected.Diagram