Magnetic actuator circuit for high-voltage switchgear
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United States of America Patent
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Oct 29, 2013
Grant Date -
Dec 29, 2011
app pub date -
Mar 9, 2010
filing date -
Mar 10, 2009
priority date (Note) -
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Abstract
A magnetic actuator circuit for high-voltage switchgear for a vacuum circuit breaker, including at least one permanent magnet and at least one coil connected in series with a transistor switch, and an electromechanical switch connected in series with the transistor switch and the coil. The first electromechanical switch and the transistor switch have an open default state, such that the electromechanical switch closes at an instant that precedes an instant of closing of the transistor switch, and such that it is returned to the open state once the transistor switch has returned to the open state. Such a magnetic actuator circuit may find application for putting a medium and/or high voltage apparatus into and out of circuit.
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