Duty Cycle And Overheating - Miller XMT 350 VS Auto-Line w/WCC Owner's Manual

4-4. Duty Cycle And Overheating

Overheating
Notes
60% Duty Cycle
6 Minutes Welding
0
Minutes
4 Minutes Resting
15
OR
Reduce Duty Cycle
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
If unit overheats, output stops, a
Help message is displayed and
cooling fan runs. Wait fifteen min-
utes for unit to cool. Reduce amper-
age or voltage, or duty cycle before
welding.
.
Single Phase Operation: The
unit is supplied with a 8 AWG
power cord. The rated output
with 8 AWG is 300 amps, 32
volts at 40% duty cycle. To
achieve 60% duty cycle
change cord to 6 AWG.
NOTICE − Exceeding duty cycle
can damage unit and void warranty.
A or V
Ref. 216 568-A
OM-252 340 Page 13