Spring-operated mechanism having delay circuit
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United States of America Patent
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Jun 21, 2016
Grant Date -
Aug 2, 2012
app pub date -
Feb 3, 2012
filing date -
Aug 3, 2009
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Abstract
A hydromechanical stored-energy spring mechanism is provided for operating at least one switching contact of a circuit breaker, for example, in a high-voltage switching system. The hydromechanical stored-energy spring mechanism includes a hydraulically operated close-open (CO) delay circuit configured to delay triggering of a switching process of the circuit breaker, and an electromechanical actuator provided in place of a hydraulic operation of the CO delay circuit. The electromechanical actuator generates a mechanical time delay or acceleration over an extended temperature range.
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