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US 6,927,355 B2Granted
Circuit breaker
AssigneeABB AB
InventorsPer Olof Thuresson, Lars Hermansson, Tomas Roininen, Stefan Valdermarsson
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AssigneeABB AB
InventorsPer Olof Thuresson, Lars Hermansson, Tomas Roininen, Stefan Valdermarsson
Estimating the term…
The invention relates to a circuit breaker, preferably for high or medium voltage. The movable conact of each breaker pole is connected, via mechanical means for transmitting movement, to a movable part of an electric motor (6). The movable contact and the means for transmitting movement are arranged in a gas-tight apparatus chamber (31) surrounded by a gas-tight apparatus housing (9) of insulating material such as porcelain. In accordance with the invention the motor (6) is arranged entirely in the apparatus chamber (31). The invention also relates to an electric plant provided with the breaker claimed, uses of the breaker claimed and a method of breaking electric current in which the breaker claimed is used.
A circuit breaker for medium and high voltage, comprising:
An electric plant, comprising:
A method for breaking electrical current, the method comprising breaking the current with a circuit breaker comprising at least one moveable contact, at least one means for transmitting movement operatively connected to the at least one moveable contact, an electric motor operatively connected to the means for transmitting movement, and a gas-tight housing enclosing a gas-tight chamber, wherein the at least one moveable contact, the means for transmitting movement and the electric motor are entirely enclosed in the gas-tight chamber.
A method for manufacturing a circuit breaker, the method comprising:
Dependencies are inferred from the claim text.