Patent ID: 8735760
Filing Date: 2014-05-27
Classification: H01H

Abstract:
1. A gas insulated switchgear comprising: a stationary contact; a moveable contact contactable with or uncontactable from the stationary contact; an insulation case being sized to include the stationary contact and the moveable contact, wherein the insulation case is shaped to define a pipe, and wherein the insulation case is formed with electrically non-conductive material; a flange positioned along an entire inner circumferential surface of the insulation case in a circumferential direction to form an annular shape, wherein the flange includes a horizontal portion formed with a width in a lengthwise direction of the insulation case, and a vertical portion extending from one end of the horizontal portion by a length in a radial direction of the insulation case, wherein the vertical portion includes an end that faces the radial direction and forms a surface configured to contact and support the stationary contact; a collection groove portion formed at the flange and configured to collect metal particles generated during contact or separation operation between the stationary contact and the movable contact, wherein the collection groove portion is formed in the horizontal portion of the flange.