Technical Data; Explanation Of The Term "Duty Cycle; Special Voltages - Fronius TPS 270i C Operating Instructions Manual

Technical data

Explanation of Duty cycle (D.C.) is the proportion of time in a 10-minute cycle at which the device may be
the term "duty cy- operated at its rated output without overheating.
cle"
NOTE!
The D.
C. values specified on the rating plate are based on an ambient temperature of 40°C. If the
ambient temperature is higher, either the D.C. or output must be reduced accordingly.
Example: Welding at 150 A at 60% D.C.
-
-
-
150 A
If the device is to be continuously operated without stopping:
1
2

Special voltages

For devices designed for special voltages, the technical data on the rating plate applies.
For all machines with a permitted mains voltage of up to 460 V: The standard mains plug
allows the user to operate with a mains voltage of up to 400 V. For mains voltages up to
460 V fit a mains plug permitted for such use or install the mains supply directly.
Welding phase = 60% of 10 minutes = 6 minutes
Cooling phase = remaining time = 4 minutes
After the cooling phase, the cycle begins anew.
60 %
6 Min.
0 A
0 Min.
look in the technical data for a D.C. value of 100% for the reigning ambient tempera-
ture.
Reduce the output or amperage in line with this value so that the device can remain in
use without observing a cooling phase.
4 Min.
6 Min. 10 Min.
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