Figure 9-11
Replacing the precharging transformer
Installing the precharging transformer
1. Remove the paint from at least one screw position on the base brackets. This is where the
transformer will be grounded.
2. Install the new transformer in the reverse order to when you removed it. Comply with the
specified torque (Page 156) of the fastening screws. When attaching the connecting cables
ensure that the cables do not twist.
3. Check that the precharger is working correctly.
Maintenance
9.5 Repair
SINAMICS SM150 6SL3810-7NN38-0AA1
Operating Instructions Rev.201910281406 EXAMPLE
165