load tap-changer, method for operating a load tap-changer and electrical installation with load tap-changer

摘要

The invention relates to a load shunt switch (1) for uninterrupted switching between winding shunts (n, n + 1) of a regulating winding comprising - a switch (2) comprising a first, a second and a third switching contact (2.1, 2.2, 2.3) and a first position in which the first and third switching contact are connected and which may assume an interconnecting position in which the switching contacts are connected; - a first fixed contact (4) which can be connected to a first winding tap; - a second fixed contact (5) which can be connected to a second winding tap; - a first movable contact (6) which can selectively contact each of the fixed contacts; - a second movable contact (7) m which can selectively contact each of the fixed contacts; - a main branch (8), which connects the first moving contact with the first switching contact, - an auxiliary branch (9), which connects the second moving contact with the second switching contact through a current limiting element. (11); - a switching element (11) which is connected between the main branch and the second switching contact.