Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1978-08-29
1980-11-25
Truhe, J. V.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200148A, H01H 3370
Patent
active
042360536
ABSTRACT:
A puffer type gas circuit breaker in which a stationary arcing contact constituting the stationary part of a breaking unit is surrounded by an envelope including an annular shield element acting to relieve the electric field around the free end of the stationary arcing contact, and a gas passage extending in the axial direction of the stationary arcing contact is formed in the side portion of the envelope so that the greater portion of an arc extinguishing gas puffed toward the stationary arcing contact can be discharged through the gas passage. In the circuit breaker, a gas-shielding hood is disposed around the envelope for preventing the gas stream discharged from the gas passage from flowing directly straight.
REFERENCES:
patent: 3941962 (1976-03-01), Thaler
patent: 4131775 (1978-12-01), Meyer et al.
Asai Yoshihito
Sasaki Koji
Ginsburg Morris
Hitachi , Ltd.
Truhe J. V.
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