Siemens SINAMICS S120 Equipment Manual page 239

Vertical installation
Note
Notes for installation in control cabinets
No additional measures need to be taken if the modules are mounted in a cabinet with
degree of protection up to IP21.
However, if they are mounted in a cabinet with a degree of protection higher than IP21, a fan
must be installed above the modules to avoid the formation of hotspots.
The table below specifies the required volumetric flows and the average rates of flow within a
canopy (400 mm high).
If a single module is installed in a cabinet with IP54 degree of protection, then the fan can be
dispensed with if the required volumetric flow for the module is <0.01 m³/s.
If several modules are installed in the same cabinet, then the required volumetric flow
corresponds to the total volumetric flows of the individual components.
In configurations where a number of cabinet canopies are interconnected, the total
volumetric flow must also be calculated and a fan selected accordingly.
Table 8- 6 Required fan flow rate through the power unit for degree of protection > IP21
Type
Power Module FL, 210 A (400 V)
Power Module FL, 260 A (400 V)
Power Module GL, 310 A (400 V)
Power Module GL, 490 A (400 V)
Active Line Module JXL, 985 A (400 V)
Active Line Module JXL, 1405 A (400 V)
Active Line Module HXL, 810 A (690 V)
Active Line Module HXL, 1025 A (690 V)
Active Line Module JXL, 1270 A (690 V)
Active Line Module JXL, 1405 A (690 V)
Motor Module FXL, 210 A (400 V)
Motor Module FXL, 260 A (400 V)
Motor Module GXL, 310 A (400 V)
Motor Module GXL, 490 A (400 V)
Motor Module HXL, 745 A (400 V)
Motor Module JXL, 985 A (400 V)
Motor Module JXL, 1260 A (400 V)
Motor Module JXL, 1405 A (400 V)
Motor Module FXL, 100 A (690 V)
Water-cooled chassis power units for common cooling circuits
Manual, 08/2017, 6SL3097-4AM10-0BP0
8.3 Cabinet installation, vertical and horizontal installation
Required volumetric flow dV/dt of
roof-mounted fan [m³/s]
0.003
0.003
0.004
0.006
0.020
0.026
0.018
0.021
0.024
0.038
0.002
0.003
0.004
0.006
0.008
0.020
0.022
0.026
0.002
Cabinet design and EMC
Average rate of flow
[m/s]
0.01
0.02
0.02
0.03
0.10
0.14
0.10
0.11
0.12
0.21
0.01
0.02
0.02
0.03
0.05
0.10
0.12
0.14
0.01
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