VACUUM SWITCH WITH TOGGLE ASSEMBLY OPERATING MECHANISM

摘要

A load tap changer having vacuum switches driven by a uniformly rotated drive shaft. The shaft is coupled to a reciprocating yoke which directly drives a spur gear and a drive plate. The drive plate drives a toggle assembly after a predetermined dwell angle. The toggle assembly quickly rotates a slotted cam after an additional dwell period. The vacuum switches are attached to the slotted cam and are opened and closed in the proper sequence as determined by the shape and position of the cam slots.