Dreiphasentrafos sanft einschaltenthree phase transformers softstarttransfos triphasé demarrer en douce
Manufacturer and Contractor: http://www.fsm.ag

TSR for 3 phase transformers are named: TSRD or TSRDF

TSRD in the cabinet of a 50kVA separation transformer, switch on the transformer with a current peak not higher than only the no load current.
three phase transformers softstart