Derating - Siemens SINAMICS S120 Manual

System overview

2.6 Derating

2.6 Derating
Derating as a function of the ambient temperature and installation altitude
You can find data regarding derating as a function of the ambient temperature and
installation altitude in Chapter System data (Page 34); a distinction is made between
blocksize and chassis (built-in) devices.
Derating as a function of the pulse frequency
If the Power Modules are operated at a pulse frequency that is above the rated pulse
frequency, then you must reduce the output currents I
Note
You will find the rated pulse frequency in the Technical Data of the relevant Power Module.
Figure 2-4
Figure 2-5
40
Reduction of the output current as a function of the pulse frequency
Reduction of the output current as a function of the pulse frequency (for PM240-2; 400 V,
75 and 90 kW)
, I , I and I as follows:
n H S6 max
Manual, (GH6), 07/2016, 6SL3097-4AL00-0BP5
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