High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Air-current blowout
Patent
1999-01-27
1999-11-02
Donovan, Lincoln
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Air-current blowout
218 48, 218 60, 218 65, H01H 3318, H01H 3370, H01H 3382
Patent
active
059775025
ABSTRACT:
The gas circuit breaker has a configuration such that a stationary contact section and a movable contact section are arranged in an arc-extinguishing gas sealed container, to face each other, and the movable contact section includes a hollow operating rod having an exhaust hole at its rear portion, a movable cylinder arranged around the rod, a hollow movable arc contact provided on the movable cylinder and an insulating nozzle surrounding the movable arc contact. The movable contact section further includes a stationary piston portion insertable/removable inside the movable cylinder, and the space formed by the movable cylinder and the current collecting cylinder fixed to the stationary piston portion is partitioned by a parting plate into a thermal pressure elevation room space at front side and a compression room space at rear side. During the electrode opening operation, the compression room space is compressed by the interaction between the movable cylinder and the piston portion, thus increasing the pressure in the space, and the speed of the movement of the operating rod is slowed down just before the completion of the electrode opening operation.
REFERENCES:
patent: 4992634 (1991-02-01), Thuries et al.
patent: 4996398 (1991-02-01), Dufournet et al.
patent: 5898150 (1999-04-01), Gallix et al.
Kawano Hiromichi
Mizoguchi Hitoshi
Mori Tadashi
Suzuki Katsumi
Toyoda Mitsuru
Donovan Lincoln
Kabushiki Kaisha Toshiba
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