Electrical circuit breaker with two vacuum cartridges in series

Details Electrical circuit breaker with two vacuum cartridges in series Electrical circuit breaker with two vacuum cartridges in series

1992-10-15

1994-09-13

Scott, J. R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200144B, 200146R, H01H 3366

Patent

active

053470966

ABSTRACT:
Inside a sealed enclosure (10) filled with sulphur hexafluoride there are housed main contacts (17,19) and an auxiliary circuit comprising two vacuum cartridges (20,21) electrically connected in series with each other and in parallel with the main contacts. The vacuum cartridges (20,21) are operated by a single mechanism to open and close simultaneously and serial connection enables the voltage withstand to be increased. The invention can be applied to medium or high voltage gas-insulated installations or substations.

REFERENCES:
patent: 3671696 (1972-06-01), Brunner
patent: 4550234 (1985-10-01), Steinemer
patent: 4814559 (1989-03-01), Stegmuller
patent: 5155315 (1992-10-01), Malkin et al.
patent: 5239150 (1993-08-01), Bolongeat-Mobleu et al.

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