Load-tap changer with power storage spring e.g., for variable transformers, has power storage spring as pressure spring supported on end by fixed spring abutment

摘要

A load-tap changer has a power store for interruption-free switching between different winding tappings of a variable/tapped transformer under load, in which the load tapped changer has an insulation cylinder in the wall of which are arranged tap contacts. At least one power storage spring is a pressure spring (17,18), which is supported at one end on the fixed spring abutment (19). A traction bar is arranged on the drive crank, and at least one movable spring abutment (20, 21) is arranged on the traction rod/bar.