| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a gas-insulated switching device, having a contact portion enabling full effects to expect on displacement in the radial direction of a high-voltage conductor with dimensions equivalent to those of the conventional ones. <P>SOLUTION: This gas-insulated switching device has a top end side internal projection 5 with a prescribed distance in a shaft direction of a sleeve-shaped holder 3, and a base portion side internal projection 6. The inside diameter of the base portion side internal projection 6, positioned at the base portion side, is made smaller than the inside diameter of the top end side internal projection 5 positioned at the top end side of the sleeve-shaped holder 3; and either of them is made larger than the outside diameter of a contact side edge portion 14a at a middle portion high voltage conductor 14. A gap is formed at the engagement portion, between the contact side edge portion 14a of the middle portion high voltage conductor 14 and the sleeve-shaped holder 3 in the axial direction. This gap is set at least two types of gaps in the axial direction, and contacts 4a, 4b, 4c, made by a plurality of contact pieces having a coil-typed spring action, are respectively accommodated in the respective ring-shaped accommodation portions 3a, 3b, 3c. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
