Siemens SINAMICS S120 System Manual page 159

Risk of fire due to overheating when the device fan voltage is insufficient
If the terminals are not reconnected to the actual line voltage, this can lead to overheating
with a risk of personal injury due to smoke and fire.
This can also cause the fan fuses to blow due to overload.
• Set the terminals in accordance with the actual line voltage.
Table 8- 9
Note
For devices with connection voltages of 320 V ... 480 V, for operation on a main grid with
voltages <380 V, direct supply from the main grid is not possible. In this case, a separate
power supply for the device fan with 1 AC 400 V must be provided; the current drawn by the
fan can be taken from the technical data. The taps for the fan transformer must be selected
for 400 V.
Table 8- 10
Grid infeed
System Manual, 04/2015, A5E03347436A
8.4 Air-cooled Active Line Modules for the grid infeed, chassis format
WARNING
Line voltage assignment for the setting at the fan transformer (320 ... 480 V 3 AC)
Grid voltage
< 380 V
380 V ± 10%
400 V ± 10%
440 V ± 10%
480 V ± 10%
Line voltage assignment for the setting at the fan transformer (500 ... 690 V 3 AC)
Grid voltage
500 V ± 10%
525 V ± 10%
575 V ± 10%
600 V ± 10%
660 V ± 10%
690 V ± 10%
Tap at the fan transformer (-T10)
Separate power supply required
380 V
400 V
440 V
480 V
Tap at the fan transformer (-T10)
500 V
525 V
575 V
600 V
660 V
690 V
Device overview
159