Duty Cycle And Overheating For Tig; Static Characteristics - Miller Multimatic 255 Owner's Manual

4-11. Duty Cycle And Overheating For TIG

60% Duty Cycle At 275A
100% Duty Cycle At 230A
Continuous Welding
Overheating

4-12. Static Characteristics

The static (output) characteristics of the welding power source can be described as flat during the GMAW process and drooping during the
SMAW and GTAW processes. Static characteristics are also affected by control settings (including software), electrode, shielding gas, weldment
material, and other factors. Contact the factory for specific information on the static characteristics of the welding power source.
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Complete Parts List is available at www.MillerWelds.com
0
15
Minutes
Duty Cycle is percentage of 10 minutes that
unit can weld at
overheating.
If unit overheats, output stops. Wait fifteen
minutes for unit to cool. Reduce amperage or
duty cycle before starting to weld again.
NOTICE – Exceeding duty cycle can damage
unit and void warranty.
A or V
OR
Reduce Duty Cycle
rated load without