Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1987-12-14
1988-11-29
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200148A, 200148B, 200148F, H01H 3354
Patent
active
047883928
ABSTRACT:
A tank type gas circuit breaker for a three-phase alternating current, comprises: three hollow members spaced in parallel with each other; a single stationary side end plate air-tightly fixed to first ends of the three hollow members; a single mechanism side end plate fixed to second ends of the three hollow members; three stationary contacts each supported to the stationary side end plate and extending in the three hollow members; three movable contacts each supported to the mechanism side end plate and extending in the three hollow members; insulated rods extending in the three hollow members while passing through the mechanism side end plate for interrupting contacts between the movable contacts and the stationary contacts; an operational rotary shaft mechanism disposed adjacent to the mechanism side end plate and connected to the insulated rods for driving each of the insulated rods; an actuator for driving the operational rotary shaft mechanism; two bushing porcelain insulators located on a top surface of each of the hollow members; current transformers arranged in lower sides of the bushing porcelain insulators; conductors disposed within the bushing porcelain insulators and connected to the movable and stationary contacts, and arc-extinction gas filled in the hollow members.
REFERENCES:
patent: 4434332 (1984-02-01), Yanabu et al.
patent: 4440998 (1984-04-01), McConnell et al.
patent: 4467158 (1984-08-01), Kobayashi et al.
patent: 4697055 (1987-09-01), Walter et al.
Hitachi , Ltd.
Macon Robert S.
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