WELDING TRANSFORMER Russian patent published in 1994 - IPC

FIELD: electrical engineering. SUBSTANCE: device is welding transformer having a spatial magnetic circuit with L-shaped cores and L-shaped magnetic shunt. The primary winding and part of the secondary winding with taps are positioned on the one L-shaped core, part of the secondary winding with taps is positioned on the other L-shaped core. To obtain a drooping external characteristic, use is made of the L-shaped magnetic shunt. Both parts of the secondary winding are connected in series. Varying the number of turns of the first and second parts of the secondary winding and the magnetic resistance of the magnetic shunt it is possible to vary the behavior of the external characteristic and the strength of the short-circuit current. EFFECT: facilitated procedure. 5 dwg