6.5 Condensation
Condensation must be avoided.
Therefore, the temperature of the coolant must be kept higher than the dewpoint in the electrical room. Use Figure 54 to determine if
the drive operating conditions (combination of room temperature, humidity, and coolant temperature) are safe. The graph can also be
used to select the temperature for the coolant. The coolant temperature must be higher than the dewpoint.
Increasing the temperature of the coolant above the data in the loadability charts decreases the nominal output current of the drive. The
data of the graph is valid at sea level altitude (1013 mbar).
-15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60
B [°C]
0
5
10
15
20
25
30
35
40
45
50
55
60
A [°C]
Figure 54: Relative humidity 100...10%
A Dewpoint temperature B Ambient temperature
The Danfoss cooling module has an automatic condensation prevention system.
6.6 Air Cooling Requirements
iC7 Series Liquid-cooled System Modules are liquid-cooled, but in a liquid-cooled drive system, there are always some heat losses to
the air. The heat losses come from the busbars, fuses, and other auxiliary components. When installing the system modules and other
components to an enclosure, ensure that there is sufficient airflow in each section.
The ambient conditions in each enclosure section must be in line with the specifications for the drive. Make sure that the temperature of
the cooling air does not become higher than the maximum ambient temperature or lower than the minimum ambient temperature of
the drive.
The structure of the enclosure must be such, that the air can move freely through the enclosure, and the air flow is directed to the
components which require cooling.
62 | Danfoss Drives Oy © 2024.03 AJ475942178716en-000101 / 172K2848A
Design Guide | iC7 Series Liquid-cooled System Modules
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