Our ATT three-phase autotransformers are an efficient and preferred solution where minimal voltage regulation is needed and are used in power supplies of industrial systems and devices where no electrical insulation between the windings is necessary. Autotransformers have lower loss characteristics compared to the ordinary transformers with the same power rating.

Standards 61558
Rated power 0.5 – 250 kVA
Rated input voltage < 690 V
Rated output voltage < 690 V
Rated frequency 50/60Hz
Insulation class H /180оС/
Protection index IP 00