GAS INSULATION TYPE ON-LOAD TAP SWITCHING DEVICE

摘要

PROBLEM TO BE SOLVED: To improve a pressure resistance of a gas insulation type on-load tap switching device by preventing a local electric field concentration.;SOLUTION: A gas insulation type on-load tap switching device 2 includes: a gas container 2c in which an opening part is formed in an upper end part, a switching circuit breaker 2a is arrange, and an insulation gas is sealed; a head part lid 6 that is fitted to the opening part of the gas container 2c; a sealing member 8 that seals between the gas container 2c and the head part lid 6; a seal pressing ring 7 that is a seal pressing member for pressing a seal member 8; an inner part sealed member 14 that cover a lower end part of the seal pressing ring 7 and provides a curve surface part 14b at a lower side; and a supporting insulation plate 22 that is attached to an external part of the switching circuit breaker 2a, of which the upper end part is arranged adjacent to the inner sealed member 14, and in which a notch 22a forming a predetermined space of the curve surface parts 14 of the inner part sealed member 14 is provided.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT