S
PECIFICATION
P
RODUCT
S
PECIFICATION
AND
C
ONFIGURATION
C
HAPTER
2
14
2.1.3
External dimensions
This section explains the external dimensions of the welding power source.
2.1.4
Rated duty cycle
This section explains the rated duty cycle of the welding power source.
CAUTION
• Use this welding power source at or under the rated duty cycle.
Exceeding the rated duty cycle may result in deterioration and damage to the welding
power source.
• Periodically blow moisture-free compressed air to clean dust and dirt accumulated on
the transistor and radiation fin of the diode.
If dust and dirt accumulate on the radiation fin, it may not only reduce the duty cycle
but also result in degradation or burnout of the welding power source.
•
The rated duty cycle of the welding power source is the following
：
<Operation cycle at duty cycle of 60 %>
400 A 60% (for DC, DC TIG, three phase)
400 A 50% (for DC PULSE, three phase)
300 A 80% (for DC STICK, three phase)
250 A 60% (for DC, DC TIG, DC STICK, single phase)
200 A 40% (for DC PULSE, single phase)
(Rated duty cycle of 60% means the power source must be rested
for 4 minutes after 6 minutes of continuous welding at the rated
current.)
•
Use the welding power source within its usable range by observing
the duty cycle for the welding current.
•
Use the welding power source within the lowest rated duty cycle of
combined accessories such as welding torches.
18.1" (460 mm)
3.9" (100 mm)
28.0" (710 mm)
31.9" (810 mm)
15.6" (395 mm)
12.6" (320 mm)
Energized
Stop
6 minutes
4 minutes
10 minutes
