Electric transformer or electric choke coil and method for operating the electrical transformer or electric choke coil

摘要

There is proposed an electrical transformer or a electrical choke and a method. The device comprises windings (4), which are by means of a train under clamping element (10) loaded with pressure. A strain of the clamping element (10) is substantially in the pulling direction (z) by means of an optical sensor (12) detected.