FIELD: electrical and power engineering.
SUBSTANCE: proposed unit has main three-phase lead-in group, at least two winding-and-core assemblies of which first one is made in the form of autotransformer incorporating at least first and second windings and second assembly in the form of transformer incorporating primary, secondary, and phase-shifting windings; first and second autotransformer windings are connected so that first-phase starting lead of first winding is connected to second-phase finishing lead of second winding, second-phase starting lead of second winding, to third-phase finishing lead of first winding, and first-phase finishing lead of first winding, to third-phase starting lead of second winding.
EFFECT: simplified mechanical design and circuit arrangement, reduced size and mass.
6 cl, 3 dwg
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