Derating Data - Siemens SINAMICS S120 Manual

Order no.
Frame size
Rated short-circuit current acc. to IEC
Power demand of fans.
1)
The specified power loss equals the maximum value at 100 % capacity utilization. The value in normal operation is
2)
lower.
The cabinet height increases by 250 mm with IP21 degree of protection, and by 400 mm with IP23, IP43 and IP54
3)
degrees of protection.
Duty cycle
P
Figure 5-41
5.7.6

Derating data

The Central Braking Modules have an integrated temperature monitoring function. A fan
included as standard supports the power unit cooling. The fan is switched on and off by
means of a temperature control, which prevents it from running unnecessarily. The
permissible ambient temperature is from 0 °C to 40 °C. For temperatures between 40 °C and
50 °C, the power must be reduced according to the following formula:
● P = [1 − 0.025 x (T − 40 °C)] x P
The installation altitude above sea level can be up to 2000 m. The power must be reduced
for altitudes above 1000 m (derating). In this case, the derating is 1.5 % per 100 m.
Cabinet Modules
Manual, 03/2013, A5E03263538A
6SL3700-
mm
kA
P
15
P
150
P
270
15 150 270
Duty cycle of the Central Braking Modules
1AE35- 1AE41-
0AA3 0AA3
400 400
65 65
P
15
P
P
DB
600
n
5.7 Central Braking Modules
1AF35- 1AF41-
5AA3 1AA3
400 400
65 65
150
P
270
Cabinet Modules
1AH36- 1AH41-
3AA3 2AA3
400 400
65 65
t/s
247