| 摘要 |
A gas insulated switchgear includes stationary contacts, movable contacts contactable with or uncontactable from the stationary contacts, an insulation case housing the stationary contacts and the movable contacts so as to support the same, the insulation case having a shape of a pipe, flanges disposed at an inner circumferential surface of the insulation case in a circumferential direction, each of the flanges having an annular shape, and a collection groove portion formed at the flanges and collecting metal particles generated during contact or separation operation between the stationary contactors and the movable contactors. Under this configuration, the metal particles can be collected and laid in the collection groove portion provided at the flanges, accordingly, the metal particles cannot be stuck on an insulation member or other components of the insulation case, resulting in obviating occurrence of insulation breakdown within the switchgear and improving reliability of a product.
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