Technical data
10.6 Current derating as a function of the installation altitude
Converter with the control units CU240D-2
316
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
10.6
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
isolation transformer.
–
The phase-to-phase voltage does not have to be reduced.
10.7
Pulse frequency and current reduction
Pulse frequency and current reduction
Table 10- 5 Current reduction depending on pulse frequency
Power
rating at
400 V
Frame
size
Inverter
current
rating
Output current at pulse frequency of
at 4 kHz 6 kHz
8 kHz
10 kHz
12 kHz
14 kHz
16 kHz
kW
A
A
A
A
A
A
A
0.75
A
2.2
1.9
1.5
1.3
1.1
1.0
0.9
1.5
A
4.1
3.5
2.9
2.5
2.1
1.8
1.6
3
B
7.7
6.5
5.4
4.6
3.9
3.5
3.1
4
C
10.2
8.7
7.1
6.1
5.1
4.6
4.1
5.5
C
13.2
11.2
9.2
7.9
6.6
5.9
5.3
7.5
C
19
19
19
17.6
16.3
14.9
13.5
