FIELD: electrical engineering. SUBSTANCE: in case of phase failure in circuit faulty phase is connected to adjacent one by means of make contact of undervoltage relay and correcting capacitor and reactors of remaining phases reduce voltage unbalance in device affording phase shift of voltage vectors in three-wire mains through 30 deg. counter-clockwise. EFFECT: reduced voltage unbalance in case of phase failure. 2 dwg
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Authors
Dates
1994-01-15—Published
1991-07-04—Filed