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Your contact: +49 - 212 8804-0 • info@reo.de

CNW 174

DC filter for photovoltaik (2 lines)

CNW 174

Unique Selling Point


  • protection of solar cells from high frequency 
  • noise generated by the inverter
  • designed to conform to existing and planned
  • optional with current transformer
  • compact construction
  • low temperature rise
  • universal protection for all inverters
  • optional anti-surge protection

Description


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

Technical Data


  • Nominal Voltage : 900 V
  • Rated current : 10 - 600 A

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.

 

Circuit example

 

Your contact: +49 - 212 8804-0 • info@reo.de

CNW 174

DC filter for photovoltaik (2 lines)

Technical data

Type

Rated voltage
[V]

Rated current
[A]

Leakage current
[mA]

Inverter Power
[kW]

Losses
[W]

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

 

Example for interference suppression

 

Your contact: +49 - 212 8804-0 • info@reo.de

CNW 174

DC filter for photovoltaik (2 lines)

Dimensions

 

 

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