Vacuum interrupter

Details Vacuum interrupter Vacuum interrupter

1982-09-30

1984-09-11

Hartary, Joseph W.

Electricity: circuit makers and breakers

Liquid contact

Time delay

252512, H01H 3300

Patent

active

044711840

ABSTRACT:
A vacuum interrupter has a capacity of breaking high voltage and large electric current, and excellent anti-welding characteristics, and prevents generation of harmful surges by current chopping and reignitions, and particularly prevents surges by multi-reignition and three-phase simultaneous breaking caused by the multi-reignition. The vacuum interrupter comprises a pair of electrodes (5a, 6a) which can close or separate from each other within an electric insulating hermetic vacuum vessel (4), each electrode (5a, 6a, 15 and 28) is made of a metallic material of a mean vapor pressure, the boiling point of the metallic material being 2700 to 3300K. (2427.degree. to 3027.degree. C.), such as, for example, chromium, or a chromium alloy including a content of more than 90% chromium.

REFERENCES:
patent: 2154700 (1939-04-01), Ruben
patent: 3372258 (1968-03-01), Porter
patent: 3818163 (1974-06-01), Robinson
patent: 3821505 (1974-06-01), Wood
patent: 3828428 (1974-08-01), Wayland
patent: 3960554 (1976-06-01), Gainer, Jr.
patent: 4048117 (1977-09-01), Emmerich
patent: 4293748 (1981-10-01), Sakuma et al.

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