Device for switching electric current between poles e.g. for power distribution and transmission, uses current limiting inductances between GTO power semiconductors to provide link between inductances and terminal

摘要

A device for switching electric current between poles (5,6) has current limiting inductances (Lno1, Lno2) in series with the power semiconductors (3) and those between the GTO power semiconductors are switched and provide a link between the current limiting inductances and the terminal (8) and those switch-off units (11) arranged parallel to the power semiconductors (3), between which the terminal is formed, are connected to a potential point between the respective switch-off capacitor (Cs2, Cs3) and the switch-off diode (Don1, Don2) via an intermediate resistance (Ron).