MULTIFUNCTION SERIES EQUIPMENT
Summary
1.4 Specifications O241/O251
Description
Weight
Power Source Dimensions
H395mmxW180mmxD370mm
Cooling
Welder Type
Inverter Power Source
European Standards
EN 60974-1 / IEC 60974-1
Number of Phases
Nominal Supply Voltage
Nominal Supply Frequency
Welding Current Range
(DC STICK Mode)
Welding Current Range
(DC TIG Mode)
Welding Current Range
(CUT Mode)
Effective Input Current
Maximum Input Current
Single Phase Generator
Requirement
170A @ 60%, 26.8V
STICK (MMA)
Welding Output, 40ºC, 10 min.
132A @ 100%, 25.3V
TIG (GTAW)
170A @ 60%, 16.8V
Welding Output, 40ºC, 10 min.
124A @ 100%, 15V
40A @ 60%, 96V
CUT
Welding Output, 40ºC, 10 min.
31A @ 100%, 92.4V
Open circuit voltage (MMA/TIG)
Open circuit voltage(CUT)
Protection Class
NOTE
Note 1: The Effective Input Current should be used for the determination of cable size &
supply requirements.
Note 2: Generator Requirements at the Maximum Output Duty Cycle.
Note 3: Motor start fuses or thermal circuit breakers are recommended for this application.
Check local requirements for your situation in this regard.
Due to variations that can occur in manufactured products, claimed performance, voltages,
ratings, all capacities, measurements, dimensions and weights quoted are approximate
only. Achievable capacities and ratings in use and operation will depend upon correct
installation, use, applications, maintenance and service.
86
O241
O251
20.9 kg
31 kg
H540mmxW270mmxD450mm
Fan Cooled
Fan Cooled
Inverter Power Source
EN 60974-1 / IEC 60974-1
1
1
230V +/- 15%
230V +/- 15%
50/60Hz
50/60Hz
10 - 170A
10 - 200A
10 - 170A
10 - 200A
15 - 40A
20 - 40A
26.2A
29.5A
33.9A
41.7A
14.4KVA
11.7kVA
200A @ 50%, 28V
141A @ 100%, 25.6V
200A @ 50%, 18V
141A @ 100%, 15.6V
40A @ 60%, 96V
31A @ 100%, 92. 4V
66V DC
66V DC
236V DC
270V DC
IP23
IP23
MULTIFUNCTION SERIES EQUIPMENT
1.5 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 50% duty cycle, 200 amperes at 28 volts. This means that it has been designed and
built to provide the rated amperage (200A) for 5 minutes, i.e. arc welding time, out of
every 10 minute period (50% of 10 minutes is 5 minutes). During the other 5 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.
1 0 0
1 0 0
9 0
9 0
8 0
8 0
O241 CUT
7 0
7 0
6 0
6 0
5 0
5 0
O241 TIG
4 0
4 0
3 0
3 0
Safe
Safe Operating Region
Operating
(TIG&STICK)
2 0
2 0
Region
(CUT)
1 0
1 0
0 0
25
25
75
75
100
100
1 25
1 25
0 0
50
50
Welding Current(AMPS)
Welding Current(AMPS)
1 0 0
1 0 0
9 0
9 0
8 0
8 0
7 0
7 0
6 0
6 0
O251 CUT
5 0
5 0
4 0
4 0
3 0
3 0
Safe
Safe Operating Region
Operating
2 0
2 0
Region
(CUT)
1 0
1 0
0 0
100
100
25
25
75
75
0 0
50
50
125
125
Welding Current(AMPS)
Summary
O241 STICK
150
150
175
175
2 0 0
2 0 0
2 25
2 25
2 5 0
2 5 0
275
275
O251 STICK/TIG
(TIG&STICK)
150
150
175
175
2 0 0
2 0 0
2 25
2 25
2 5 0
2 5 0
275
275
3 00
3 00
3 00
3 00
87
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