Connection Example - Siemens SINAMICS S120 Manual

Line-side power components
2.6 Active Interface Modules
2.6.3.2

Connection example

Figure 2-14 Connection example Active Interface Module, frame sizes FI / GI
Same phase sequence in the precharging and main circuits
It is absolutely imperative that the precharging and main circuits have the same phase
sequence. If this is not the case, during the brief overlap period, where both contactors are
simultaneously closed, the precharging resistors will be overloaded and could be
destroyed.
68
CAUTION
Manual, (GH3), 01/2013, 6SL3097-4AE00-0BP3
Chassis power units