CDN 504U / CDN 508U, 4/8-Line, Surge and EFT/burst, Coupling Decoupling Network

CDN 504U / 508U unsymmetrical

Coupling-/Decoupling Network 

• Unshielded unsymmetrical interconnection lines
• Rated voltage 250VAC / 350VDC
• Surge: 5.0 kV, 1.2/50 μs
• Surge: 5.0 kV, 10/700 μs
• Ringwave: 5.0 kV, 100kHz
• Coupling Impedance, selectable

Designed for applying the impulse output voltage of the Combination wave/ Ring wave generator to interconnection lines of the equipment under test, acc. to IEC 61000-4-5, Fig9/ IEC 61000-4-12, Fig. 8. 

The coupling/decoupling network CDN 504/ 508 U essentially consists of a current compensated decoupling inductor, L1 – L4/L8, and a set of coupling impedances to be inserted in the coupling path. 

 For surge coupling according to EN / IEC61000-4-5 coupling impedances, 40Ω + 0.5µF and 40Ω + OVP are available. A capacity of >3µF is available for coupling the ring wave signal according to EN / IEC 61000-4-12. A slot to connect your own external coupling impedance is also available. 

 A coupling impedance is activated by inserting the corresponding bridge.  

The coupling is set by inserting the coupling bridges.  

Here in the picture as an example EA1-> EA2.  

A bridge to connect the COM connection of the generator with GND is also available. 

The inputs E1 - E4/ 8 are decoupled by the inductances L1 - L4/8. 

The test item is connected to outputs A1 - A4/8.