Siemens SINAMICS S120 Manual page 178

Line Modules
3.4 Active Line Modules
Overload capability
The Active Line Modules have an overload reserve.
The criterion for overload is that the Active Line Module is operated with its base load current
before and after the overload occurs (a load duration of 300 s is used as a basis here).
High overload
The base load current for a high overload I
max. current I
Figure 3-39
176
can flow for 5 s.
max_DC
High overload
is based on a duty cycle of 150% for 60 s; the
H_DC
Manual, (GH3), 01/2013, 6SL3097-4AE00-0BP3
Chassis power units