Electrodes of vacuum switch

Details Electrodes of vacuum switch Electrodes of vacuum switch

1985-10-24

1987-10-06

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3366

Patent

active

046984674

ABSTRACT:
An electrode structure disposed in a vacuum switch generally comprises a pair of relatively separable electrodes and a pair of contacts provided on the opposing surfaces of the electrodes and surface areas of the contacts are selected to be smaller than the surface areas of the electrodes. The vapor pressure P.sub.0 and specific resistance .rho..sub.0 of the electrode material and the vapor pressure P.sub.1 and specific resistance .rho..sub.1 of the contact material are held in a relation ##EQU1## and values representing specific heat, heat of fusion and heat of evaporation of the contact material are 100.+-.20% of those of the electrode material except a portion on which the contact material is provided.

REFERENCES:
patent: 4430536 (1984-02-01), Kurosawa et al.
patent: 4471184 (1984-09-01), Sanu et al.
patent: 4508945 (1985-02-01), Zuckler
patent: 4513186 (1985-04-01), Thomas
patent: 4584445 (1986-04-01), Kashiwagi et al.

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