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3. GENERAL NOTICE OF OPERATION
3.1
Rated Duty Cycle
CAUTION
٨
Use this welding power source at or under the rated duty cycle. Exceeding the rated
duty cycle limitation may result in damage to the welding machine.
٨
The rated duty cycle of the welding power source is the following:
-
TIG WELDING: 40% (300 A)
-
STICK WELDING: 40% (250 A)
NOTE:
٨
When using a dust-proof fan filter as standard equipment, observe the duty cycle listed
above.
٨
Use of any other filter may lead to an excess of the duty cycle limitations or damage to
the welding power source. Be sure to use the specified dust-proof fan filter. (Part
number: 4519-031)
٨
The duty cycle of 40% means the machine must
be rested for 6 minutes after 4 minutes of
continuous welding at the rated current.
Operation cycle of 40% duty cycle
٨
Failure to observe duty cycle limitations may
cause the temperature inside the welding power
source to excess tolerance levels. This may
cause to premature welding power source failure
or product damage.
٨
The figure shown right indicates the relation
between welding current and duty cycle. Use
the welding power source within its usable
range, based on the appropriate duty cycle for
the welding current.
٨
The duty cycle of the welding power source is
also limited by the duty cycles of accessories
combined with it, such as welding torches. Use
the welding power source within the lowest
rated duty cycle of the accessories.
٨
Choking the filter by dust may cause decrease
duty cycle. And also it may cause damage to
the welding power source. So check the filter
periodically.
6 min.
4 min.
10 min.
ON
OFF
100
50
0
100
(190A or less)
Usable range
at TIG welding
Welding current (A)
100
200
300
40
(300A)
60
(245A)
D
ut
y
cy
cl
e
(%
)
100
50
0
100%(160 A or less)
Usable range
at STICK welding
Welding current (A)
100
200 250
40% (250 A)
60% (204 A)
D
ut
y
cy
cl
e
(%
)