TRANSFORMER TAPPING ARRANGEMENT AND METHODS OF OPERATION OF SAME

摘要

A tapping arrangement for a transformer, the arrangement comprising a plurality of fixed contacts, a movable rotary contact, a transition rotor with pairs of transition contacts, an interrupter coupling assembly and driving motor(s) are compacted into a single vacuum chamber

主权项

1. A tapping arrangement for a transformer, the arrangement comprising a plurality of fixed contacts and a movable rotary contact upon a main axle, the movable rotary contact movable to engage an original fixed contact and a destination fixed contact upon the main axle by lifting, rotation and depression of the main axle using a lift mechanism, a transition rotor arm associated with the main axle and arranged to rotate with the movable rotary contact, the transition rotor arm having two ends with transition contacts in a pair arranged to engage in turn as the rotor end rotates the original fixed contact, and to bridge the original fixed contact and the destination contact with a transition contact of the pair engaging each and then the destination fixed contact only during a tap change-over, the transition contacts connected through at least one transition resistor.