| 摘要 |
<p>The present invention provides gas-insulated switchgear in which insulation reliability is improved by minimizing the formation of foreign metallic particles caused by the sliding of a movable element and a contactor when a switching action occurs in the gas-insulated switchgear. This gas-insulated switchgear is arranged so that a moving part and a fixed part face each other inside a metallic container (1) in which an arc-extinguishing gas is sealed, the moving part comprising a movable element (8) and a movable-side contactor (5b), and the fixed part comprising a fixed-side contactor (5a). The movable element (8) includes a current-carrying sliding part (8b) by which the movable element (8) slides against the movable-side contactor (5b) and the fixed-side contactor (5a) while applying electric current to the two contactors during a switching action, and also includes a current-carrying fixed part (8a) in current-carrying contact with the movable-side contactor (5b) and the fixed-side contactor (5a) in a closed-pole state. A film is formed from a first material on the current-carrying fixed part (8a), and a film is formed from a second material, which has an electric resistivity higher than that of the first material, on the current-carrying sliding part (8b).</p> |
