single phase transformers softstart: EMEKO, Michael Konstanzer

TSRL Data Sheets
TSRLF Data Sheets etc.
Application sample sheets for the TSRL until 32A current
Application samples with TSRL or TSRLF for currents bigger than 32 Amps
TSRL for separation transformers
Trenntrafos für Weichenheizen mit dem Trafoschaltrelais schalten
TSRL for Industrie Control Transformers
TSRL for halogen light transformers
Transformer feed with pulse groups, fast switching
Voltage dip reaction of a transformer.
short cirquit proof of TSR
further applications with TSR
Trafo ohne Einschaltstromstoss, zum Patent angemeldet

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

4kVA car-Transformer produce no inrush currents, because he is connected with a Transformer-switching relay, TSRL, for currents until 32A. For higher currents than 32A, use a TSRLF together with a random switching Solid state relay. When needed also together with a bypasscontactor.

For single phase Transformers you can use two diffent types of Transformer Switching relays: TSRL and TSRLF.

TSRL means:
Transformer Switching Relay Low-cost. = all in one unit, thyrister is bridged internally, need no additional elements.

TSRLF means:
Transformer Switching relay Low-cost Fast-switching. = Modul to control an external random switching solid state relay or a thyristor modul in the TSR manner. TSRLF can control en external bypass contactor. This is a TSRLF with Option: with control relay to switch an external Bypass contactor on and off, in the correct time window.