Duty Cycle And Overheating - Miller Syncrowave 250 DX Technical Manual

3-4. Duty Cycle And Overheating

40% Duty Cycle At 250 Amperes
4 Minutes Welding
Overheating
Syncrowave 250 DX
6 Minutes Resting
0
15
Minutes
Duty Cycle is the percentage of 10
minutes that the unit can weld at
rated load without overheating.
If unit overheats, output stops, front
panel voltmeter/ammeter displays
a HLP3 or HLP5 message (see
Section 6-2), and cooling fans run.
Wait fifteen minutes for unit to cool.
Reduce amperage or duty cycle be-
fore welding.
Y Exceeding duty cycle can
60% Duty Cycle At 200 Amperes
6 Minutes Welding
A
OR
Reduce Duty Cycle
damage unit and void war-
ranty.
4 Minutes Resting
duty1 4/95 / 116 198
TM-359 Page 9