Theory of operation, Weld winding, reactor, and range switch, Output bridge, choke, and output terminals – Lincoln Electric EAGLE SVM192-A User Manual

Page 36

THEORY OF OPERATION

E-4

EAGLE™ 10,000

NOTE: Unshaded areas of Block Logic

Diagram are the subject of discussion

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 rotated, dif-

ferent amounts of reactor coil are brought into the cur-

rent 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.

OUTPUT BRIDGE, CHOKE, AND

OUTPUT TERMINALS

The AC voltage developed in the stator weld winding is

delivered, through the reactor and range switch, to the

output bridge. The DC output current path is from the

Output Bridge, where the AC voltage is rectified to a

DC voltage, and then through the choke, where the DC

output is filtered and on to the Output Terminals.

STARTER

ENGINE

BATTERY

IDLER

SOLENOID

OUTPUT

CONTROL

MECHANICAL

ROTAT ION

FIELD
CAPACITOR

ROTOR

SLIP

RINGS

115 & 230VAC

RECEPTACLES

ROTOR

STAT OR

REACTOR

RANGE

SWITCH

OUTPUT

BRIDGE

CHOKE

TERMINAL

FLYWHEEL
ALTERNATOR

PRINTED CIRCUIT

BOARD

TOROID

POSITIVE

NEGATIVE

FIGURE E.4 – WELD WINDING, REACTOR, AND RANGE SWITCH