Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1990-07-05
1992-07-28
Picard, Leo P.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
H02B 701
Patent
active
051345420
ABSTRACT:
A gas-insulated switchgear comprises a sealed enclosure filled with an electrically insulating gas, isolators of three phases for making/breaking a main circuit, and earthing switches of the three phases for grounding the main circuit. The isolators and the earthing switches are disposed in the sealed enclosure, with the isolator of each phase including oppositely disposed stationary and movable side contacts, and a movable contact for turning on or off electrical connection between them. The earthing switch of each phase includes an earth stationary contact connected to one of the movable side conductors and an earth movable contact for connection with or disconnection from the earth stationary contact. The components of the isolators of the three phases and the components of the earthing switches of the three phases are respectively situated on two virtual planes, which are adjacent to each other and disposed substantially along a longitudinal direction of the sealed enclosure.
REFERENCES:
patent: 3780354 (1973-12-01), Sharp
patent: 4827088 (1989-05-01), Oakes et al.
patent: 5003427 (1991-03-01), Reichl et al.
Mikami Osamu
Sakaguchi Minoru
Suzuki Yoshirou
Suzuyama Hiroshi
Hitachi , Ltd.
Phillips Michael W.
Picard Leo P.
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