Restrictions For Special Ambient Conditions - Siemens SINAMICS G120 Operating Instructions Manual

Technical data

10.6 Restrictions for special ambient conditions

10.6 Restrictions for special ambient conditions
Permissible line supplies dependent on the installation altitude
● For installation altitudes ≤ 2000 m above sea level, it is permissible to connect the inverter
to any of the line supplies that are specified for it.
● 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.
Current derating as a function of the installation altitude
The permissible inverter output current is reduced above an installation altitude of 1000 m.
Figure 10-3
Figure 10-4
478
transformer.
Characteristic for the PM240-2 Power Module
Characteristic for the PM250 Power Module
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG