Siemens SINAMICS S120 Equipment Manual page 158

Power Modules
5.3 Power Modules Chassis
As additional measure for installation altitudes from 2000 m up to 5000 m, an isolating
transformer is required in order to reduce transient overvoltages according to EN 60664-1.
Table 5- 54
Installation altitude
above mean sea
level
m
0 ... 2000
> 2000 ... 2500
> 2500 ... 3000
> 3000 ... 3500
> 3500 ... 4000
> 4000 ... 4500
> 4500 ... 5000
Derating as a function of the output frequency
Power Modules chassis format
If the Power Modules are operated at an output frequency < 10 Hz, then you must reduce
the output currents I
Figure 5-48
Continuous duty
Short-time duty
Sporadic short-time duty
156
Reduction of the output current as a function of the installation altitude and the ambient
temperature
Output current (as a % of the rated current) for an ambient temperature of
20 °C 25 °C
100 100
100 100
100 100
100 100
100 100
100 97.5
98.2
, I , I and I
n H S6 max
Reduction of the output current as a function of the output frequency
Permissible operating state for the complete operating time
Operating state permissible for less than 2 % of the operating
time
Operating state permissible for less than 1 % of the operating
time
30 °C 35 °C 40 °C
100 100 100
100 100 96.3
100 98.7
100
96.3
as follows:
45 °C 50 °C
93.3 86.7
Manual, 06/2019, 6SL3097-5AL00-0BP1
55 °C
80.0
AC Drive