| 摘要 |
<p>This operating means comprises a circuit-breaker closing spring, a rotatable spring-controller mounted for rotation between first and second dead-center positions with respect to said spring, and means for transmitting charging forces to the spring in response to rotation of the springcontroller in a forward direction from said second toward said first dead-center position. The spring acts to discharge and thereby further rotate said spring-controller in a forward direction when the spring-controller has been rotated in a forward direction past said first deadcenter position. Discharge of the spring drives the spring-controller into said second dead-center position, following which the spring-controller oscillates about said second dead-center position to dissipate excess energy then remaining in the parts. Means is provided for closing the circuit breaker in response to said forward rotation of the spring-controller into said second dead-center position, and this means comprises: a mechanically trip-free operating mechanism coupled to the movable contact of the circuit breaker and a linkage interconnecting said spring-controller and said operating mechanism through a pin and slot coupling. The pin and slot coupling (i) transmits closing force between the spring controller and the operating mechanism during spring-discharge, (ii) allows the spring-controller to oscillate about said second dead-center position without actuating the operating mechanism, and (iii) allows the spring-controller to be moved from said second to said first dead-center position during spring-charging without actuating said operating mechanism.</p> |
