Operational Altitude And Altitude Deratings - Siemens SINAMICS G120 Operating Instructions Manual

Technical data

13.8 Operational altitude and altitude deratings

13.8 Operational altitude and altitude deratings
Voltage
The clearance within the converter can isolate surge voltages in accordance with
overvoltage category III in compliance with the EN 60664-1 regulation up to 2000 m above
sea level.
At altitudes above 2000 m and below 4000 m above sea level, the converter has to be
connected that at least one of the following conditions is fullfilled:
● It is connected to a TN-network with isolated star-point (not an external grounded
or
● it is connected through an isolating transformer that provides a TN-network with a
A reduction of the line voltage is not necessary.
Note: The connected engines and power components must be considered separately.
Current
Output current [%]
100
306
connector)
grounded star-point.
90
80
70
60
0 1000 2000
3300 6600
Installation altitude above sea level [m]
3000 4000
9800 13000
[ft]
Operating Instructions, 03/2012, FW V4.5, A5E02999804B AB
SINAMICS G120C frequency converter