Normal Weld Voltage Waveform (Wire Cv - Lincoln Electric RANGER 250 SVM150-A Service Manual

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NORMAL WELD VOLTAGE WAVEFORM (WIRE CV)

TROUBLESHOOTING & REPAIR
MACHINE LOADED TO 250 AMPS AT 28 VOLTS
20V
This is the typical DC voltage gener-
ated from a properly operating
machine. Note that each vertical divi-
sion represents 20 volts and that
each horizontal division represents 1
millisecond in time.
The machine was loaded with a resis-
tance grid bank to 250 amps at 28
volts.
NOTE: Scope probes are connected
at weld output terminals.
SCOPE SETTINGS
Volts/Div.....................20V/Div.
Horizontal Sweep .....1 ms/Div.
Coupling.............................DC
Trigger.........................Internal
RANGER 250
0 volts
1ms
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