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Troubleshooting & repair – Lincoln Electric VANTAGE 400 User Manual

Page 132

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NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM (115VAC SUPPLY)

MACHINE LOADED TO 300 AMPS AT 27 VOLTS

TROUBLESHOOTING & REPAIR

F-84

F-84

VANTAGE® 400

This is the typical DC output voltage
generated 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 300 amps at 27
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

0 volts

20V

1ms

Trig +15V

CH1

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