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OwnerFreddy Magnussen, Philip Kjaer +1inventors
InventorsFreddy Magnussen, Philip Kjaer, Stefan Valdemarsson
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The invention relates to an electric circuit breaker. The circuit breaker comprises at least one mobile contact with operating means (2) for operating the same. An electric motor (6) is arranged for driving the operating means (2). The motor (6) is powered from a current source (50) via a current converter (40). According to the invention, the motor (6) and/or current converter (40) are greatly under-dimensioned in relation to the output the current converter is designed to deliver. This is possible because the operating duration is so brief. Under-dimensioning results in extensive cost-savings. The invention also relates to an electric plant equipped with such a circuit breaker. The invention further relates to the use of such a circuit breaker and a method for breaking electric current in the corresponding fashion.
An electric circuit breaker comprising at least one mobile contact (5), means (2) for operating the mobile contact (5), a rotating electric motor (6) for driving the operating means (2), a current source arranged for brief connection to the motor (6) and a current converter (40) arranged between the motor (6) and the current source (50), said current source being arranged for brief delivery of sufficient power for operating the mobile contact is a short period of time, characterized in that at least one of the motors (6) and the current converter (40) have a much lower rated output than the power the current source (50) is devised to deliver.
A method for breaking an electric current in which a mobile contact's contact with a second contact is broken by an operating means, said operating means being driven by an electric motor, whereby the electric motor is connected during breaking to a current source by a current converter, said current source being arranged for brief delivery of an output sufficient for operating the mobile contact in a short period of time, characterized in that at least one of the motor and the current converter is subjected to a heavy electric overload.
Dependencies are inferred from the claim text.