To provide a vacuum switch type on-load tap changer which can prevent deterioration of an insulation oil.
The on-load tap changer 1 includes a tap selector 2 and a vacuum switch type changeover opening and closing device 3. An opening and closing device body 4 of the vacuum switch type changeover opening and closing device 3 is housed in the container 7 of changeover opening and closing device wherein an insulation oil 6 is stored, and a vacuum switch 5 is provided in the opening and closing device body 4. A conservator 8 is fitted to the container 7 thereof to replenish the insulation oil 6 to the container 7 thereof. A space isolated from air wherein the insulation oil 6 is stored in a closed state is formed in the conservator 8. A space volume 8c within a conservator 8 is filled with a gas including no oxygen such as an inert gas or the like, nitrogen, for example. The conservator 8 and the container 7 thereof are connected by an oil pipe 9.
JPS62116523U | 1987-07-24 | |||
JPS62116523U | 1987-07-24 | |||
JPH0414804A | 1992-01-20 | |||
JPS5726829U | 1982-02-12 | |||
JPH05250946A | 1993-09-28 |
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Nobuo Arakawa
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