DESCRIPTION
Due to the increasingly efficient energy conversion in modern inverters, more and more high-frequency energies are being introduced into the DC circuits. These are caused by the fast switching processes of modern power semiconductors and can lead to premature aging of the solar modules.
This results in a very high interference level in the frequency range of 150kHz – 30 MHz on both the AC and DC sides. This circumstance is not currently covered by standards for the DC side. The connected long DC cabling and the large-area PV modules represent a special feature that distinguishes inverters from 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.
ADVANTAGES
- compact construction
- protection of solar cells from high frequency
- designed to conform to existing and planned
- quick connection
- low-temperature rise
- optional anti-surge protection
- universal protection for all inverters
TYPICAL APPLICATIONS
Applications: The DC-filter surpresses grid-bound troubles of inverters for renewable energies like solar and wind power.
- Conforming to: VDE 0565-3/ IEC 950/ UL 1283
- Test voltage: L-L 3000 V, DC 1 s; L-PE 3000 V, DC 1s
- Climatic category: DIN IEC 60068-1
- Overload: 1,5 x INenn 1 min / h
- Nominal Voltage: 900 V
- Rated current: 10 – 600 A
| Type | Rated voltage [V] | Rated current [A] | Leakage current [A][mA] | Typical inverter power [kW] | Power loss [W] |
| CNW 174/150 | 900 V DC | 150 | <30 | 60 | 32 |
| CNW 174/250 | 900 V DC | 250 | <30 | 100 | 10 |
| CNW 174/400 | 900 V DC | 400 | <30 | 150 | 16 |
| CNW 174/600 | 900 V DC | 600 | <30 | 250 | 28 |
