Apparatus arranged to break an electrical current
AssigneeABB Technology AG
InventorsJesper Magnusson, Lars Liljestrand, Robert Saers
Life of this patent
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Abstract
An apparatus is arranged to break an electrical current. The apparatus includes: a mechanical switch leg including a first winding of a mutual inductor and a mechanical switch connected in series; a semiconductor switch leg including a second winding of the mutual inductor and a semiconductor switch connected in series; and an overvoltage protection circuit. The mechanical switch leg and the semiconductor switch leg are connected in parallel and a self inductance of the second winding is lower than a self inductance of the first winding. A corresponding DC circuit breaker and AC current limiter are also presented.
Claims20
An apparatus arranged to break an electrical current, the apparatus comprising:
- a mechanical switch leg comprising a first winding of a mutual inductor and a mechanical switch connected in series;
- a semiconductor switch leg comprising a second winding of the mutual inductor and a semiconductor switch connected in series;
- and
- an overvoltage protection circuit,
- wherein the mechanical switch leg and the semiconductor switch leg are connected in parallel and a self inductance of the second winding is lower than a self inductance of the first winding.
Dependencies are inferred from the claim text.