| 摘要 |
PROBLEM TO BE SOLVED: 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.SOLUTION: 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. |
