Applications: The DC-filter surpresses grid-bound troubles of inverters for renewable energies like solar and wind power.
By using efficient energy conversion in modern high-frequency inverters, more high-frequency energies are in the DC circuits. Caused by the fast switching processes of modern power semiconducators, these energies can damage the solar modules. On the AC and DC side a very high interference level will be created in the frequency range of 150kHz – 30MHz.
This fact for the DC side is not recorded in the current standards. The long DC cables and the large PV modules on the filter are special features which distinguishes the inverter to all other electronic devices.
The PV generator and the often very long DC cables function as antennae and can radiate originally conducted interference.
The electromagnetic compatibility of the inverters to other devices is guaranteed.
Type |
Rated voltage |
Rated current |
Leakage current |
Inverter Power |
Losses |
CNW 174/150 |
900 V DC |
150 |
<30 |
60 |
32 |
CNW 174/250 |
250 |
<30 |
100 |
10 |
|
CNW 174/400 |
400 |
<30 |
150 |
16 |
|
CNW 174/600 |
600 |
<30 |
250 |
28 |
Type |
Dimensions |
Connection |
||||||||
L1
[mm] |
L2
[mm] |
L3
[mm] |
B1
[mm] |
B2
[mm] |
H1
[mm] |
H2
[mm] |
D1
[mm] |
D2
[mm] |
||
CNW 174/150 |
405 |
325 |
300 |
140 |
120 |
120 |
- |
7 |
9 |
Busbar 20x5 mm |
CNW 174/250 |
470 |
375 |
350 |
140 |
120 |
120 |
- |
7 |
10,5 |
Busbar 20x5 mm |
CNW 174/400 |
10,5 |
Busbar 30x5 mm |
||||||||
CNW 174/600 |
13,0 |
Busbar 30x10 mm |