WELD WINDING, REACTOR AND
RANGE SWITCH
The stator weld winding is connected to the reactor
and range switch. The inductance in the reactor offers
an impedance to current flow. The reactor coil is
tapped at various points. As the range switch is rotat-
ed, different amounts of reactor coil are brought into
the current path. As more turns of reactor are brought
into the circuit, the more impedance there is to current
flow. Simply stated, the more reactor in the circuit, the
lower the welding current.
If a constant voltage is desired for wire feeding, then
the reactor is bypassed, and the range switch is con-
nected to one of four taps on the stator weld winding
to provide a lower but “stiffer” output voltage.
THEORY OF OPERATION
E-4 E-4
RANGER 300 D AND 300 DLX
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC
FIGURE E-4
WELD WINDING, REACTOR AND RANGE SWITCH
NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion.
