INTRODUCTION 2-4 0-5492
2.09 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 without exceeding the temperature limits of the insulation of the component parts. To
explain the 10 minute duty cycle period the following example is used. Suppose a Welding Power Source is
designed to operate at a 15% duty cycle, 90 amperes at 23.6 volts. This means that it has been designed and
built to provide the rated amperage (90A) for 1.5 minutes, i.e. arc welding time, out of every 10 minute period
(15% of 10 minutes is 1.5 minutes). During the other 8.5 minutes of the 10 minute period the Welding Power
Source must idle and allowed to cool.
2.10 Specifications
Description
WeldSkill 155 WeldSkill 185
Part Number W1008155 W1008185
Power Source Dimensions H371mmxW205mmxD478mm H371mmxW205mmxD478mm
Power Source Weight 13.7 KG 13.7 KG
Cooling Fan Cooled Fan Cooled
Welder Type Multi Process Inverter Power
Source
Multi Process Inverter Power
Source
Australian Standard AS 60974.1-2006 / IEC 60974-1 AS 60974.1-2006 / IEC 60974-1
Number of Phases Single Phase Single Phase
Nominal Supply Voltage 240V AC ± 15% 240V AC ± 15%
Nominal Supply Frequency 50/60 Hz 50/60 Hz
Welding Current Range (MIG
mode)
30 - 155 A 30 - 185 A
Nominal DC Open Circuit Voltage
MIG Weld Mode
69 V
(Trigger Switch Depressed when
not Welding)
69 V
(Trigger Switch Depressed when
not Welding)
Open Circuit Voltage (VRD
On) Stick Weld Mode
<35 V <35 V
Open Circuit Voltage (VRD
Off) Stick Weld Mode
69 V 69 V
Effective Input Current (I
1eff
)
refer Note 2
10 Amps 10 Amps
Maximum Input Current (I
1max
) 35 Amps 40 Amps
Minimum Single Phase
Generator Recommendation
(refer Note 4)
8.0 kVA (at 0.8 Power Factor)
6.0 kW (at 1.0 Power Factor)
10.0 kVA (at 0.8 Power Factor)
8.0 kW (at 1.0 Power Factor)
MIG (GMAW) Welding Output,
40ºC, 10 min.
155 A @15%, 21.8V 185 A @10%, 23.3 V
85 A @ 60%, 18.3V 85 A @60%, 18.3 V
66 A @ 100%, 17.3V 66 A @100%, 17.3 V
STICK (MMAW) Welding Output,
40ºC, 10 min.
135 A @ 15%, 25.4 V 160 A @ 10%, 26.4 V
67 A @ 60%, 22.7 V 65 A @ 60%, 22.6 V
52 A @ 100%, 22.1 V 50 A @ 100%, 22 V
TIG (GTAW) Welding Output,
40ºC, 10 min.
135 A @ 25%, 15.4 V 160 A @ 20%, 16.4 V
86 A @ 60%, 13.4 V 93 A @ 60%, 13.7 V
67 A @ 100%, 12.7 V 72 A @ 100%, 12.9 V
Protection Class IP21S IP21S
Table 2-1: Specifications
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