| 摘要 |
PROBLEM TO BE SOLVED: To provide a tap selector wherein maintainability and operating reliability are superior without causing malfunction nor a wiring trouble, voltage setting working and its confirming working can be performed easily, structure is simple and economical efficiency is superior. SOLUTION: The tap selector is arranged in a transformer apparatus which includes a transformer immersed in insulating oil, and a voltage is set by switching a wire winding tap of the transformer. The tap selector is constituted by installing a substrate which is attached in the transformer apparatus through a support; a tap-changing shaft which is pivotally disposed upright on the substrate, almost columnar or cylindrical fixed terminals which are disposed upright on circumference of the substrate centering on the tap-changing shaft by a plurality of regular intervals, and to which the wire winding tap is connected, a roller terminal support whose proximal end side is fixed and linked to the tap-changing shaft; and a roller terminal which is arranged electrically insulated at the tip side of the roller terminal support, and made to abut against and engaged with a part between shafts of the fixed terminals, which are adjacent to each other through a booster member, and electrically connects the parts between the fixed terminals. COPYRIGHT: (C)2005,JPO&NCIPI
|
