公开(公告)号：US20200083678A1

公开(公告)日：2020-03-12

申请号：US16608410

申请日：2018-05-14

Applicant: Hitachi, Ltd.

Inventor： Hirokazu FURUI ,  Jun NUKAGA ,  Makoto HIROSE

IPC: H02B13/045 ,  H02B13/055

Abstract: An insulating spacer and a gas insulation shutoff apparatus each having a high dielectric strength against adhesion of a metal foreign substance are provided without increasing size or complicating a shape of the insulating spacer. In an insulating spacer of a gas insulation shutoff apparatus including a grounded tank filled with an insulating gas, a high-voltage conductor provided within the grounded tank, and the insulating spacer supporting and fixing the high-voltage conductor within the grounded tank, the insulating spacer includes a conductor to be connected to the high-voltage conductor, an insulating structure supporting and fixing the conductor within the grounded tank, and a nonlinear resistance layer provided on a creepage surface of the insulating structure, and the nonlinear resistance layer is provided in a portion to be a high-field portion of the creepage surface of the insulating structure.