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Technical data
9.3 Derating data
9.3.1 Current derating as a function of 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
● Installation altitude is up to 4000 m above sea level.
● Output voltage is reduced above an installation altitude of 2000 m.
● 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 to 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 transformer.
– The phase-to-phase voltage does not have to be reduced.
9.3.2 Current derating as a function of the ambient temperature
SINAMICS V50 converter
84
Operating Instructions, 04/2022, FW V1.0, A5E44777205B AB
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