On-load tap changer for stepped transformer - movable contact driven by shaft to switch load between fixed contacts

摘要

A selector arrangement switches between two fixed contacts by changing the direction of rotation of a drive shaft (1). An electrically conductive rocker switch (4) has a contact surface (42, 43) at both free ends and moves between two fixed contacts (61, 62). The rocker (4) has an elastic actuator (7) extending into the pivot region of rollers (3) connected to the shaft (1) to change the position of the rocker. The rocker is connected to a spring loaded locking member (5) which engages the rocker and only allows it two stable positions. USE/ADVANTAGE - Load selectors of step transformers. Switch over results directly from shaft rotation. Does not require additional complex and expensive mechanics.