EMC-PARTNER CDN2000-06-25, User Manual

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CDN2000-06-25 coupling decoupling network
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The Ring Wave coupling is clearly organised as shown in the above photograph. All coupling path are equal
as for the SURGe coupling except the coupling to protective earth. The coupling L to PE must be made as
showed in the figure above (no additional resistor or capacitor in circuit).
The colours of the cables and their plugs, as well as the colours of the sockets of the MIG0603IN tester and
of the CDN-1000 coupling network should agree. The yellow cable should be used for "low" and the red
cable for "high".
The desired coupling must be plugged onto the three-phase coupling network.
To synchronise the Ring Wave onto one of the phase L1 to L3 the surged phase must be connected to the
MIG0603IN rear side EUT-power . Use the black banana cable length 1 m. The neutral and the protective
earth must be connected on the rear side of the testers and the CDN2000 (colour blue and yellow green).
The EFT coupling cable (high-voltage BNC) can remain plugged in during the SURGE test
Caution!
The position of the short circuit bridge must be as showed in the figure above.
5.3.6 EFT coupling set up
The EFT pulses are generally coupled in between the lines and the reference plate. Individual couplings
between the lines are not meaningful, as the EFT pulse is already coupled into all parallel lines for line
lengths of around 1m, via the coupling capacitance between the lines.
The test time can also be shortened considerably. In the new EFT Modification Paper, only this coupling is
recommended.
The EFT part
of TRA is
equipped with
33 nF
EFT coupling network
Interference
Source
Interfered
system
Coax cable to TRA