3. duty cycle and overheating – Miller Electric 350 VS User Manual

Page 16

OM-2251 Page 12

6 Minutes Welding

4 Minutes Resting

3-3. Duty Cycle And Overheating

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.

60% Duty Cycle

Overheating

A or V

Reduce Duty Cycle

Minutes

Ref. 216 568-A

Notes