| 摘要 |
<p>PROBLEM TO BE SOLVED: To stabilize insulation performance by making three stopping positions, which are switching-on, disconnecting, and grounding positions, accurate.SOLUTION: A switch gear comprises: an aerial insulation ground disconnector 6 that is able to switch among switching-on position, disconnecting position and a grounding position; and a vacuum valve 5 that turns on and turns off a current in a vacuum container electrically connected to the aerial insulation ground disconnector and vacuum therein. An operating device for the aerial insulation ground disconnector transmits the driving force of a motor to the aerial insulation ground disconnector via an operating force transmission part. The operating force transmission part comprises: an operation rod connected and fixed to the movable electrode of the aerial insulation ground connector; a lever moved in an arc together with a shaft rotated and driven by the motor; a connection pin connecting the lever and the operation rod; and a limit switch 22 that operates the operation rod according to the arc motion of the lever, thereby driving the connection pin, and detecting the switching-on, disconnecting, and grounding positions of the aerial insulation ground disconnector.</p> |
