Siemens SINAMICS S150 NEMA, Руководство по эксплуатации

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Technical specifications
12.2 General data
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
803
Note
Derating factors for pulse frequencies in the range between fixed values
The relevant derating factors can be determined by linear interpolation for pulse frequencies
in the range between the specified fixed values.
12.2.2 Overload capability
The converter is equipped with an overload reserve to deal with breakaway torques, for
example.
In drives with overload requirements, the appropriate base load current must, therefore, be
used as a basis for the required load.
The overloads apply under the precondition that the converter is operated as a maximum at
its base-load current before and after the overload (a duty cycle duration of 300 s is used as
a basis here).
Another precondition is that the frequency converter is operated at its factory-set pulse
frequency at output frequencies >10 Hz.
For additional information on overload capability, see the Low Voltage configuration manual.
Low overload
The base-load current for low overload (I
L
) is based on a load duty cycle of 110% for 60 s or
150% for 10 s.
Figure 12-1 Low overload