9.2 Grounding the system
WARNING
High voltage after shutdown
High voltages are still present in the drive even after it has been shut down. Touching the
drive can result in death or serious injury.
Only work on the power unit if it has been sufficiently grounded. Before touching the drive,
ensure that the following parts of the power unit are de-energized:
● Internal busbars
● Input and output terminals
● Auxiliary power supply
Always observe the five safety rules (Page 17)when carrying out any work on the device.
9.2.1 Grounding with a grounding device
Use a three-pole grounding harness for fixed ball points to ground the system.
Note
Ordering a grounding harness
You can order the grounding harness. Contact the Service Center.
Note
Number of grounding harnesses
Depending on the configuration of the drive, use a sufficient number of grounding harnasses.
A grounding harness is required for each three-phase system.
Maintenance
9.2 Grounding the system
SINAMICS SM150 6SL3845-7NN46-7AA0
Operating Instructions 04/2017 157
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