Operation
7.11 Closed-loop control
SINAMICS DCP
Operating Instructions, 09/2019, A5E34382853K
341
Additional dependency of the current and power limiting on ambient factors
The current and power limits additionally depend on the installation altitude, the internal air
intake temperature and the temperatures of the power units, see Chapter "Derating
(Page 357)".
The influence of the derating for a 120 kW device installed at an altitude of 5000 m is shown
as example in the following diagram.
Figure 7-73 Derating of a 120 kW device for an installation altitude of 5000 m
(side 1 is constant at the rated voltage of 600 V, the voltage on side 2 is variable)
For a 30 kW device, it should be additionally noted that the voltage limits decrease
depending on the installation altitude, see Chapter "Derating (Page 357)".
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