FIELD: electrical engineering. SUBSTANCE: device has three-legged transformer, each leg carrying three windings of each phase; first like polarity leads of first and second windings are connected to supply mains of power system; first leads of third winding are connected in star; second leads of first winding are connected to capacitor bank; second leads of second winding are connected to reactor; second leads of third winding are connected to resistor; ratio of second-to-first winding turns is to be chosen from equation given in description of invention. EFFECT: reduced power loss. 1 dwg
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