To provide an on-load tap changer which suitably control opening/closing operation of a contact and eliminates a fault caused by sludge production.
The on-load tap changer includes a container 23 filled with insulating oil and a changeover opening/closing unit 22 arranged at the container 23. The changeover opening/closing unit 22 has a contact 60 where a load current flows, and makes and breaks the contact 60. The changeover opening/closing unit 22 further has a movable portion 67 which rotates as the contact 60 is made and broken and a dummy metal portion 71 fixed to the movable portion 67. The dummy metal portion 71 is formed of a metal material which reacts with a sulfur compound contained in the insulating oil, and captures a sulfide produced through the reaction.
JP2022079254 | TAP SWITCHER AT LOAD |
JP7291639 | on-load tap changer |
JPH0250405A | 1990-02-20 | |||
JPS57193219A | 1982-11-27 |
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Nobuo Arakawa