Stator Voltage Test - Lincoln Electric RED-D-ARC DX450 Service Manual

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Service and repair should only be performed by Lincoln Electric factory trained personnel.
Unauthorized repairs performed on this equipment may result in danger to the technician
or machine operator and will invalidate your factory warranty. For your safety and to avoid
electrical shock, please observe all safety notes and precautions detailed throughout this
manual.
If for any reason you do not understand the test procedures or are unable to perform the
test/repairs safely, contact the Lincoln Electric Service Department for electrical trou-
bleshooting assistance before you proceed. Call 1-888-935-3877.
TEST DESCRIPTION
This test will determine if the stator is able to produce the correct voltages from its wind-
ings. It will only yield meaningful data if the engine high idle speed is correct, (1810 RPM),
and approximately 160 VDC is present across the rotor slip rings.
NOTE: The slip ring voltage will most likely be correct if at least one of the AC output volt-
ages is correct. Also check to make sure that the stator windings are not internally
grounded to the stator frame. See Wiring Diagram.
MATERIALS NEEDED
Miscellaneous hand tools
Voltmeter
Test pins
TROUBLESHOOTING AND REPAIR
STATOR VOLTAGE TESTS
WARNING
DX450
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