ADJUSTABLE WELDING TRANSFORMER Russian patent published in 2005 - IPC

FIELD: electrical equipment of arc-welding plants including welding rectifier power supply transformers.

SUBSTANCE: proposed transformer has magnetic circuit assembled of legs and their closing yokes, primary and secondary windings disposed on legs, and pair of magnetic shunts disposed between windings. Shunt length is not shorter than yoke length; shunts are mounted outside magnetic circuit between primary and secondary winding coils. Gap between magnetic circuits of shunts and legs is equal on both ends and is adjusted by means of special device, for instance by means of two screws, each having left- and right-hand thread, both rotating simultaneously and in phase. This is afforded by pair of sprockets mounted on screw extensions and by chain transmission joining them. Laminations of legs are interleaved perpendicular to those of yokes and shunts.

EFFECT: provision for symmetry of magnetic fields of leakage.

2 cl, 3 dwg