true 3 phase transformers, 3 primary coils on a common iron core, softstart
untrue 3 phase Transformers, ( unit contending of 3 single Phase Transformers), softstart
- TSRL for 3 connected single phase transformers

Manufacturer and Contractor: http://www.fsm.ag

Example for a 3 phase car transformer, contend of 3 single Toroid core transformers, soft started with 3 TSRL.

TSRL Application samples for untrue 3 phase transformers