Replacing The Precharging Transformer - Siemens SINAMICS SH150 Operating Instructions & Installation Instructions

9.7.5

Replacing the precharging transformer

Danger to life as a result of incorrect replacing the precharging transformer
Replacing the precharging transformer incorrectly can result in death, serious injury, or
material damage.
● Follow "the five safety rules (Page 13)".
● Before replacing the precharging transformer, open the safety disconnector for the 400 V
● Lift the transformer carefully because it is heavy (> 45 kg).
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 SH150 6SL3805
Operating Instructions 05/2020
WARNING
supply.
transformer will be grounded.
specified torque (Page 99) of the fastening screws. When attaching the connecting cables
ensure that the cables do not twist.
Maintenance
9.7 Repair
103