ET 220I AC/DC
INTRODUCTION
Manual 0-5346
2-2
2.06 Transporting Methods
!
WARNING
Disconnect input power conductors from de-energized supply line before moving the welding
Power Source.
Lift Power Source with handle on top of case. Use handcart or similar device of adequate ca-
pacity. If using a fork lift vehicle, secure the Power Source on a proper skid before transporting.
2.07 Packaged Items
ET 220i AC/DC Inverter Power Source (Part No. W1009300)
• ET 220i AC/DC Inverter Power Source
• Two male 50mm Dinse connectors
• Operating Manual
2.08 Duty Cycle
The rated duty cycle of a Welding Power Source, is a statement of the time it may be operated at its rated welding current output with-
out exceeding the temperature limits of the insulation of the component parts. To explain the 10 minute duty cycle period the follow-
ing example is used. Suppose a Welding Power Source is designed to operate at a 40% duty cycle, 170 amperes at 26.8 volts. This
means that it has been designed and built to provide the rated amperage (170A) for 4 minutes, i.e. arc welding time, out of every 10
minute period (40% of 10 minutes is 4 minutes). During the other 6 minutes of the 10 minute period the Welding Power Source must
idle and be allowed to cool. The thermal cut out will operate if the duty cycle is exceeded.
Art # A-12840
ET 220i AC/DC
SMAW (STICK)
GTAW (TIG)
SAFE OPERATING REGION
(TIG & STICK)
Figure 2-1: ET 220i AC/DC Duty Cycle
