Duty Cycle And Overheating; Volt-Ampere Curves - Miller Axcess 300 Owner's Manual

3-3. Duty Cycle And Overheating

100% Duty Cycle At 225 Amperes
Continuous Welding
Overheating

3-4. Volt-Ampere Curves

8 0
7 0
6 0
5 0
4 0
3 0
2 0
1 0
0
0 1 0 0
OM-216 967 Page 10
0
15
Minutes
CV MODE
20 0 3 0 0 40 0
A M P E R A G E
60% Duty Cycle At 300 Amperes
6 Minutes Welding
OR
Reduce Duty Cycle
5 00 6 00
Duty Cycle is percentage of 10
minutes that unit can weld at rated
load without overheating.
If unit overheats, thermostat(s)
opens, output stops, and cooling
fan runs. Wait fifteen minutes for
unit to cool. Reduce amperage or
duty cycle before welding.
Y Exceeding duty cycle can
damage unit and void
warranty.
4 Minutes Resting
A/V
duty1 4/95 − 178 651
Volt-ampere curves show minimum
and maximum voltage
amperage output capabilities of
unit. Curves of other settings fall
between curves shown.
.
This volt-ampere curve
represents the dynamic output
of the unit with a static load.
va_curve1 4/95
and