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2) DESCRIPTION
Origo™ Arc is a welding rectifier for craftsmen or industry. Permits welding with a large number of different
types of electrode including basic.
Origo™ Arc is a fan cooled three phase rectifier connected to a power socket between three phases.
The welding current is continuously adjustable with a crank at the front panel. A scale on the front panel
shows the set welding current.
The rectifier has a movable leakage core. By varying the magnetic field by means of this leakage core.
The rectifier case is made of galvanized sheet steel and is so designed that the rectifier can be used
outdoors irrespective of the weather whitout extra protection.
High-temperature — in the case an internal over heating, the source does not provide welding current and
the fan keeps on. When the internal temperature of the source goes back to its normal value the welding
operation can be restarted.
3) DUTY CYCLE
Duty cycle is the ratio of the time that a welding machine can provide the maximum welding current (charge
time) to a reference time; in according to international standards, reference time is 10 minutes.
Example:The nominal duty cycle of 60% means that a machine can repeatedly provide its nominal welding
current during periods of 6 minutes (charge), followed by a 4 minute rest (the machine does not provide
welding current) (6+4=10 min.). This process is repeatedly done so that the temperature of its internal
components does not exceed the limits stated in the project.The same goes for any value of duty cycle.
The duty cycle of 100% means that the machine can provide specified welding current non-stop, in other
words, with no need to rest.
In a welding machine, the allowed duty cycle increases up 100 % as the used welding current decreases;
inversely, the allowed duty cycle decreases as the welding current increases up to its maximum range.
4) TECHNICAL DATA
TABLE 4.1
EQUIPMENT
Current range
Nominal current (A) / Voltage (V)
Duty cycle
Duty cycle (%)
Current (A)
Voltage (V)
Power supply (V-Hz)
Rating for 60% duty cycle (KVA)
Thermal class (°C)
Dimensions (W x D x H - mm)
Weight (kg)
16
Origo™ Arc 251/301/401
Origo™ Arc 251
50A / 22V - 250A / 30V
50A / 21V - 300A / 32V
78
35
60
200
170
28
30
220/380/440 - 60 or 230/400/460 - 50
30 KVA
H (180° C)
600 x 1200 x 730
98
Origo™ Arc 301
55A / 22V - 400A / 36V
81
35
60
300
240
400
32
29,5
33.5 KVA
H
(180° C)
600 x 1200 x 730
600 x 1200 x 730
130
Origo™ Arc 401
80
35
60
300
36
32
35 KVA
H
(180° C)
160
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