| 摘要 |
PURPOSE:To enable pulling out of a breaker unit of a change-over switch to the outside of a separation chamber by separating the change-over switch from a tap selector and installing the tap selector in a tank of a transformer and the change-over switch in the separation chamber in the tank of the transformer. CONSTITUTION:Only a change-over switch 6 is separated from a transformer proper and a tap selector 8 is contained in the same chamber as the transformer proper. A cover 26 mounted on an opening of a tank of the transformer supports an isolation chamber 21 made of isulators, which contains the change-over switch 6 and a breaker unit 7. A support stand 22 installed in the isolation chamber 21 supports the tap slector 8 at the upper and lower sides. A through bushing 24 for electrically connecting the breaker unit 7 with the tap selector 8 is airtightly fitted to the isolation chamber 21. A part at which a transmission shaft 25 for connecting the breaker unit 7 with the tap selector 8 passes through the isolation room 21 is sealed to cause the breaker unit and the tap selector to change-over in fixed sequence. Furthermore, a roller device for drawing the breaker unit 7 is equipped. In drawing it, a door 20 is removed from the cover 26. |
