Current And Voltage Derating Dependent On The Installation Altitude - Siemens SINAMICS G120D Original Instructions Manual

Technical data

12.5 Current and voltage derating dependent on the installation altitude

12.5 Current and voltage derating dependent on the installation altitude
Current derating depending on the installation altitude
Above 1000 m above sea level you must
reduce the inverter output current
corresponding to the adjacent curve as a result
of the lower cooling power of the air.
Permissible line supplies depending on the installation altitude
● Installation altitude up to 2000 m above sea level
– Connection to every supply system permitted for the inverter.
● Installation altitudes between 2000 m and 4000 m above sea level
– Connection to a TN system with grounded neutral point.
– TN systems with grounded line conductor are not permitted.
– The TN line system with grounded neutral point can also be supplied using an
– The phase-to-phase voltage does not have to be reduced.
Also observe restrictions related to the connection of components.
330
isolation transformer.
Converter with control units CU250D-2
Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA