FIELD: electric engineering. SUBSTANCE: device has magnetic circuit with high-voltage and low- voltage windings, additional winding which is designed as two serial sections. Coils of first section embrace rods of magnetic circuit; coils of second section are located on either ends of corresponding coaxial centers of low-voltage and high-voltage windings or between surface of magnetic circuit rod and inner surface of coaxial center of transformer winding or on additional magnetic circuit. EFFECT: increased functional capabilities. 5 cl, 5 dwg
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