Lincoln Electric SVM188-A Welder User Manual


 
This is the typical DC open circuit
voltage waveform generated from a
properly operating machine. Note
that each vertical division represents
20 volts and that each horizontal divi-
sion represents 2 milliseconds in
time. The machine was loaded with a
resistance grid bank. The grid bank
meters read 650 amps at 44 VDC.
Note: Scope probes connected at
machine output terminals: (+) probe
to positive terminal, (-) probe to nega-
tive high inductance terminal.
SCOPE SETTINGS
Volts/Div.....................20V/Div.
Horizontal Sweep .....2 ms/Div.
Coupling.............................DC
Trigger .........................Internal
TYPICAL OUTPUT VOLTAGE WAVEFORM - MACHINE LOADED
CONSTANT VOLTAGE INNERSHIELD MODE
0 volts
2ms20V
TROUBLESHOOTING AND REPAIR
F-35 F-35
DC-600
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