Figure 9-33
Installing the precharging transformer
1. Remove the paint from at least one screw position on the base brackets. This is where the
2. Install the new transformer in the reverse order to when you removed it. Comply with the
3. Check that the precharger is working correctly.
SINAMICS SM150 6SL3845-2NN41-8AD2
Operating Instructions Rev.201910281310 EXAMPLE
Example: Replacing the precharging transformer
transformer will be grounded.
specified torque (Page 143) of the fastening screws. When attaching the connecting cables
ensure that the cables do not twist.
Maintenance
9.5 Repair
165