ESAB EMP235ic - Duty Cycle

5 OPERATION
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© ESAB AB 2017
5.9 Duty cycle
The EMP235ic and EM235ic both have a welding current output of 235A at 40% duty cycle
(230V). A self-resetting thermostat will protect the power source if the duty cycle is
exceeded.
Example: If the power source operates at a 40% duty cycle, it will provide the rated
amperage for a maximum of 4minutes out of every 10minute period. The remaining time,
6minutes, the power source must be allowed to cool down.
4 minutes 6 minutes
A different combination of duty cycle and welding current can be selected. Use the graphs
below to determine the correct duty cycle for a given welding current.
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Duty cycle on 120V AC
Welding current (AMPS)
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