Stator Short Circuit & Ground Test - Lincoln Electric VANTAGE 400 Service Manual

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STATOR SHORT CIRCUIT & GROUND TEST
Service and repair should be performed by only 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 there are undesirable electrical connections between the stator
windings and chassis ground, or between individual windings within the stator.
This test should be performed if flashing voltage is present at the rotor slip rings, Rotor
resistance, field bridge rectifier, field capacitor and all associated wiring are proven to be
good, but the stator output voltage fails to build-up to normal levels, or is too high in one
or more, but not all, of the windings.
MATERIALS NEEDED
Miscellaneous hand tools
Ohm meter
TROUBLESHOOTING & REPAIR
WARNING
VANTAGE® 400
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