| 摘要 |
PROBLEM TO BE SOLVED: To provide a tap switching device that can be made compact. SOLUTION: A changeover switch 22 of the tap switching device 101 includes an output member 89 which rotates on a predetermined axis 71, a plurality of fixed contacts 63 electrically connected to different taps, respectively, a movable contact 81 which operates as the output member 89 rotates to selectively connect with the plurality of fixed contacts 63, a first vacuum valve VSR connected between a predetermined node and a current limiting resistance R, and a second vacuum valve VSM connected between the predetermined node and the movable contact 81, wherein the movable contact 81, the plurality of fixed contacts 63, the first vacuum valve VSR, and the second vacuum valve VSM are provided crossing the same plane orthogonal to the predetermined axis 71, and the movable contact 81 is provided inside the plurality of fixed contacts 63, the first vacuum valve VSR, and the second vacuum valve VSM in a radial direction centering on the predetermined axis 71. COPYRIGHT: (C)2011,JPO&INPIT
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