Duty Cycle And Overheating - Miller AlumaPower 350 MPa Auto-Line CE Owner's Manual

4-5. Duty Cycle And Overheating

500
425
400
350
300
250
200
150
100
10
Overheating
Notes
15 20 25 30 40
% DUTY CYCLE
60% Duty Cycle
6 Minutes Welding
0
15
Minutes
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.
NOTICE − Exceeding duty cycle
can damage unit and void warranty.
THREE PHASE
OPERATION
50 60 70 80 90 100
4 Minutes Resting
A or V
OR
Reduce Duty Cycle
Ref. 219 523-A
OM-245 182 Page 15