Current Derating As A Function Of The Installation Altitude - Siemens SINAMICS G120D Operating Instructions Manual

Technical data

11.6 Current derating as a function of the installation altitude

11.6 Current derating as a function of the installation altitude
Current derating depending on the installation altitude
The permissible converter output current is reduced above an installation altitude of 1000 m.
Permissible line supplies dependent on the installation altitude
• For installation altitudes ≤ 2000 m above sea level, it is permissible to connect the converter
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.
336
transformer.
Converter with the control units CU240D-2
Operating Instructions, 10/2020, FW V4.7 SP13, A5E34262100B AH