To stabilize insulation performance of a contact and a shield efficiently by suppressing discharge occurring on the creepage of an insulation container in the voltage conditioning step of a vacuum valve, and to provide an inexpensive vacuum valve by shortening the voltage conditioning step thereby reducing the manufacturing cost.
The vacuum valve includes a pair of electrodes 4, 5 which hold a pair of contacts 43, 53 arranged oppositely in a vacuum container, respectively, via contact holding parts 42, 52 and making and breaking the pair of contacts, and a shield 7 formed to surround the pair of contacts and the contact holding parts facing each other and fixed to the vacuum container. A nickel plating layer 8 is provided at a part of at least one of the pair of contacts and contact holding parts facing the shield.
TSUKIMA MITSURU
ABE JUNICHI
YOSHIDA TOMOKAZU
| JP2008021590A | 2008-01-31 | |||
| JPS634519A | 1988-01-09 | |||
| JP2006318795A | 2006-11-24 | |||
| JPS6215716A | 1987-01-24 | |||
| JPH09171746A | 1997-06-30 |
| US4574169A | 1986-03-04 |
Masuo Oiwa
Keigo Murakami
Kenji Yoshizawa