Vacuum circuit interrupter

Details Vacuum circuit interrupter Vacuum circuit interrupter

1987-09-22

1988-07-26

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3366

Patent

active

047602228

ABSTRACT:
A vacuum circuit interrupter comprising in a vacuum vessel at least a pair of a separable stationary electrode and a movable electrode, and a main shield concentrically surrounding the electrodes. The main shield has a large-diameter portion at the central portion and a small-diameter portion at opposite ends. The axial length L of the large-diameter portion of the main shield is the length expressed by: ##EQU1## where, .PHI..sub.2 =inner diameter of the large-diameter portion of main shield, and .PHI..sub.1 =outer diameter of the electrode. The taper angle from the large-diameter portion to the small-diameter portion is selected to be 80.degree..about.100.degree..

REFERENCES:
patent: 3903386 (1975-09-01), Yanagisawa
patent: 3920942 (1975-11-01), Yanagisawa
patent: 4231814 (1980-11-01), Watanabe
patent: 4440995 (1984-04-01), Lange et al.

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