Shunt trip control circuits using shunt trip signal accumulator and methods of operating the same
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United States of America Patent
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Feb 21, 2017
Grant Date -
Jun 18, 2015
app pub date -
Dec 16, 2013
filing date -
Dec 16, 2013
priority date (Note) -
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Abstract
Some embodiments of the inventive subject matter provide an apparatus for driving a shunt trip actuator for a circuit breaker or other switch. The apparatus includes an energy storage device and an accumulator circuit configured to store energy in the energy storage device responsive to a shunt trip control signal. The apparatus further includes a detector circuit configured to generate a detection signal responsive to a state of the energy storage device meeting a predetermined criterion and a driver circuit configured to drive the shunt trip actuator using the energy stored in the energy storage device responsive to the detection signal.
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