Method of detecting a leak in any one of the vacuum interrupters

Details Method of detecting a leak in any one of the vacuum interrupters Method of detecting a leak in any one of the vacuum interrupters

1975-01-30

1976-09-28

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

317 11R, 317 62, 307136, H01H 3366

Patent

active

039833453

ABSTRACT:
Discloses a method of detecting a leak in any one of the vacuum-type circuit interrupters of a high voltage vacuum circuit breaker comprising a plurality of normally series-connected interrupters located within a tank of the circuit breaker containing pressurized gas. Through small openings in the wall of the tank, a first set of conductive rods are inserted to make electrical connection with predetermined terminals of the interrupters. Through other small openings in the tank wall, a second set of conductive rods, insulated from the tank wall, are inserted to make electrical connection with predetermined other terminals of the inrterrupters. These predetermined terminals are such that the interrupters are connected electrically in parallel between the first and second sets of rods. Between said first and second sets of rods a test voltage is applied to the interrupters in parallel that is of sufficient value to produce a high probability of dielectric breakdown within any interrupter stressed by said voltage that has lost its vacuum, thus providing an indication of such a loss of vacuum.

REFERENCES:
patent: 1972362 (1934-09-01), Sorensen
patent: 3403297 (1968-09-01), Crouch
patent: 3472981 (1969-10-01), McCarty et al.
patent: 3626125 (1971-12-01), Tonegawa
patent: 3641359 (1972-02-01), McCarty
patent: 3814885 (1974-06-01), Sofianek
patent: 3839612 (1974-10-01), Badey et al.

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