Gas-blask load-break switch

Electricity: circuit makers and breakers – Liquid contact – Time delay

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Details

200148R, H01H 3388

Patent

active

048291501

ABSTRACT:
In a gas-blast load-break switch, a nozzle is formed to have a cylindrical trunk part (21b) and a bottom part (21b); the cylindrical trunk part has a predetermined inner diameter large enough to withstand a recovery voltage generated between the fixed arc contact and a movable arc contact in breaking current, so that an inner surface of the nozzle is isolated from the arc space and undesirable discharge to the nozzle, flashover through the nozzle and/or reignition outside the nozzle are prevented.

REFERENCES:
patent: 3769479 (1973-10-01), Leeds
patent: 4163131 (1979-07-01), Perkins
patent: 4256940 (1981-03-01), Kii
patent: 4276456 (1981-06-01), Cromer et al.
patent: 4475018 (1984-10-01), Arimoto et al.
patent: 4489226 (1984-12-01), Holgren et al.
patent: 4565911 (1986-01-01), Slamecka

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