WELDING TRANSFORMER Russian patent published in 1995 - IPC

FIELD: electrical engineering. SUBSTANCE: transformer has located in safety shell single legged with side yokes magnetic circuit, primary winding, made of main and additional parts with adjusting taps, secondary winding with adjusting welded leads and two switches of primary winding: main power circuit voltage switch and adjusting taps switch. Primary winding big number of adjusting welded leads, made of thin enamel wire, increases productivity, expands limits of adjustment of welding current and provides conditions to use standard electrodes of different diameter. Making magnetic circuit single legged with side yokes and floor by floor concentric location of all the windings on one leg decreases consumption of materials and losses in structure. Converter provides transformer normal operation during significant deviations of main power circuit voltage. EFFECT: welding transformer is used in electrical engineering. 4 cl, 3 dwg