Now it presents a valid alternative for the booster heating systems : the VOLTAGE SHIELD REGULATOR (VSR).

THE VSR IS NOT AN INDUCTION REGULATOR (motor with the rotor stuck) ,IS NOT A REGULATOR WITH ROLLER OR SKID INSIDE , IS NOT A STATIC REGULATOR , BUT WORK ONLY ACTING ON THE LINKAGE FLUX.

VSR is similar to standard transformers because the only moving material is a shield (by simple mechanism, completely reliable). So the life of shield regulator is the same of normal transformer

The overload is possible because inside the shield regulator there is not local over heating due to rollers, skids or other material with low thermal constant.

All our regulators are working with the full satisfaction of clients from many years, being the most innovative product and technology in this moment comparing with traditional ones. It also permits to save energy and losses with best application.

It is possible to make a VSR for any power required ( from 10 up to 10.000 kva), configuration (3-3/2-3/1-1 phase) , input voltage ( from 30 kv or more) and output voltage.

STEM TRAFO/Stimamiglio srl produces any other special transformers for to satisfy in any case the necessity of every type of furnaces heating system, and for more furnace transformers, oil filled and dry type, cast resin, for rectifiers, reactors, up to 50 MVA 170 KV.