3 Installation
3.3 Mounting
50 DC1-S…20…, DC1-S…OE1 Variable Frequency Drives 05/21 MN040058EN www.eaton.com
When variable frequency drives with internal fans are installed vertically over
each other, an air baffle must be placed between the devices. Failure to do
so may expose the device on top to a thermal overload caused by the guided
air flow (device fan).
Figure 22: Deflector due to increased circulation caused by device fan
Table 3: Recommended values for minimum clearances and required cooling air (see fig. 21,
22)
The values specified in ￫ Table 3 are recommended values for an ambient
temperature of up to +50 °C with an IP20 degree of protection or +40 °C
with an IP66 degree of protection, an installation altitude of up to 1000 m,
and a switching frequency of up to 8 kHz.
￫
Devices with high magnetic fields (e. g. reactors or
transformers) should not be installed close to the variable
frequency drive.
Frame size a b c Airflow
1)
mm in mm in mm in m
3
/h ft
3
/min
For degree of protection IP20
FS1
50 1.97 33 1.3 50 1.97 18.69 11
FS2 50 1.97 46 1.81 75 2.95 37.38 22
For degree of protection IP66
FS1 10 0.39 12.5 0.49 200 7.87 – –
FS2 10 0.39 12.0 0.47 200 7.87 – –
1) ft
3
/min = CFM (cubic foot per minute)
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