Siemens SINAMICS G12 Hardware Installation Manual page 110

Technical data
7.8 Restrictions for special ambient conditions
● For installation altitudes 2000 m ... 4000 m above sea level, the following applies:
– Connection to a TN line system with grounded neutral point is permissible.
– TN systems with grounded line conductor are not permitted.
– The TN line system with grounded neutral point can also be supplied using an isolation
– The phase-to-phase voltage does not have to be reduced.
Note
Using Power Modules connected to TN line supplies with voltages ≥ 600 V for installation
altitudes 2000 m ... 4000 m
For voltages ≥ 600 V, the TN line supply must have a grounded neutral point established using
an isolating transformer.
110
transformer.
Hardware Installation Manual, 08/2017, A5E33294624B AG
Power Module PM240-2