Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1983-05-24
1985-06-25
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200148B, 335195, H01H 3318
Patent
active
045256128
ABSTRACT:
A gas insulated switch including a tank filled with an insulating gas, wherein fixed and moving main current carrying contactors are positioned opposite each other, each including respectively fixed and moving arc electrodes installed therein and extending therefrom towards each other. According to a preferred embodiment, the fixed arc electrode includes an arc-proof end piece mounted adjacent and electrically connected to one end of an electric coil and an end ring mounted adjacent and electrically connected to the other end of the electric coil. During operation, upon opening and closing of the electrical connection between the fixed and moving arc electrodes, an arc is generated therebetween and a resultant current flows through the coil to generate a magnetic field. The magnetic field produces a force on the arc tending to rotate the arc circumferentially, whereby the arc is extinguished.
REFERENCES:
patent: 4032736 (1977-06-01), Ruffieux et al.
patent: 4410778 (1983-10-01), Weston
patent: 4414450 (1983-11-01), Moll et al.
"About the SF6 Gas Circuit Breaker of rated 3.6/7.2 kV" Ref. 1, Japan Electric Commity published on 1970, Ono Shunichiro Fujiwara Kazushi et al., (Yasukawa Electric Works).
"Arc Behavior & Breaking Characteristic of SF6 Gas Circuit Breaker of Rotary Arc Extinguishing System: Japan Electric Commity published on 1981 Ref. 2, Fujiwara Kazushi et al., (Yasukawa Electric Works).
Macon Robert S.
Tokyo Shibaura Denki Kabushiki Kaisha
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