Siemens SINAMICS S120 Manual page 109

Current carrying capacity of the DC link busbars
To calculate the load of the DC link busbar, add the DC link currents I
Motor Modules. It is not permissible that the maximum current carrying capacity of the DC
link busbar is exceeded. For detailed information on this topic, see SINAMICS S120 Manual
"Booksize Power Units ", Chapter "Current carrying capacity of DC links".
Table 6- 4
DC link busbar or bridge
DC link busbars of 50 mm modules
DC link busbars of 100 mm modules 30 A / 2 x 18 A (FS A)
DC link busbars of 100 mm modules 30 A / 2 x 18 A (from FS B)
DC link busbars of 100 mm modules 45 A / 60 A
FS = Function State; is stamped on the rating plate (see below)
1)
Figure 6-2
For Motor Modules Booksize C/D type, the current load capability can be increased across
the board from 100 A to 200 A by replacing the existing 4 mm DC link jumpers with 6 mm
thick DC link jumpers. The existing M4 connecting screws can be reused when making the
replacement.
Article number for 6 mm DC link bridge (10 bridges in a package). 6SL3162-2BB00-0AA0
Power Units in Booksize C/D-Type Format
Manual, 12/2018, 6SL3097-5AC20-0BP0
Current carrying capacity of the DC link busbars
Motor Module rating plate ("FS" in the red circle)
4 mm DC link bridge
6.6 Electrical connection
of the connected
d rated
Current carrying capacity [A]
100
100
1)
200
1)
200
6 mm DC link bridge
Cabinet design
107