Current Derating As A Function Of The Installation Altitude; Pulse Frequency And Current Reduction - Siemens SIMATIC ET 200pro FC-2 Operating Instructions Manual

11.3

Current derating as a function of the installation altitude

Current derating depending on the installation altitude
The permissible inverter 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
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
– The phase-to-phase voltage does not have to be reduced.
11.4

Pulse frequency and current reduction

Relationship between pulse frequency, temperature and output base-load current
Figure 11-1
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2018, FW V4.7 SP10, A5E34257324B AF
isolation transformer.
Power derating in relation to the ambient temperature and pulse frequency
11.3 Current derating as a function of the installation altitude
Technical data
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