Surge Coupling Decoupling Networks Rated Up To 200 A - EM TEST coupling NX5 bs-3-480-16 Manual

EM TEST
6.3.

Surge coupling decoupling networks rated up to 200 A

The voltage drop across the CDN shall not exceed 10 % of the CDN input voltage at the specified current rating,
but should not exceed 1.5 mH.
To prevent unwanted voltage drops in the CDN, the value of the decoupling inductors are reduced for CDNs
rated at > 16 A. As a consequence, the peak voltage and the duration of the open-circuit voltage waveform which
is measured with no load can vary within the tolerances given in Tables 4, 5 and 6 in IEC 61000-4-5: Ed 3. High
current EUTs represent lower impedances and cause surges close to short-circuit conditions. Therefore, for high
current CDNs it is the current waveform which is predominant. Large tolerances on the voltage definition are
acceptable.
Surge voltage parameters under
open-circuit conditions
Peak voltage
Current rating ≤ 16 A
16 A < current rating ≤ 32 A
32 A < current rating ≤ 63 A
63 A < current rating ≤ 125 A
125 A < current rating ≤ 200 A
Front time
Duration
Current rating ≤ 16 A
16 A < current rating ≤ 32 A
32 A < current rating ≤ 63 A
63 A < current rating ≤ 125 A
125 A < current rating ≤ 200 A
The selection of the CDN specification from Table 4 IEC 61000-4-5 Ed3 shall be made to match the current rating
of the EUT (for example: an EUT rated at 7 A shall be tested using a CDN complying with the specifications of a
16 A rated CDN). Any higher current rated CDN can be used if it meets the specification requirements in Table 4
for the relevant lower current rating of the EUT (for example: a CDN rated 63 A can be used for testing an EUT
rated at 5 A, if it meets the specification requirements of a 16 A rated CDN).
Coupling
Coupling NX5 bs-3-690-200.3
Manual of operation
18 μF
(line-to-line)
Set voltage 10 %
Set voltage 10 %
Set voltage 10 %
Set voltage 10 %
Set voltage 10 %
1,2 μs ± 30 %
50 μs +10 μs / -10 μs
50 μs +10 μs / -15 μs
50 μs +10 μs / -20 μs
50 μs +10 μs / -25 μs
50 μs +10 μs / -30 μs
Data correspond to Table 4 IEC 61000-4-5 Ed3
Range 16 A
32 A ok
63 A ok
125 A ok
200 A ok
V 1.03
Coupling impedance
Set voltage +10 % / - 15 %
Set voltage +10 % / - 20 %
Set voltage +10 % / - 25 %
50 μs +10 μs / -25 μs
50 μs +10 μs / -30 μs
50 μs +10 μs / -35 μs
50 μs +10 μs / -40 μs
50 μs +10 μs / -45 μs
32 A 63 A 125 A
ok
ok ok
ok ok ok
ok ok ok
coupling NX
9 μF + 10 Ω
(line-to-ground)
Set voltage 10 %
Set voltage 10 %
1,2 μs ± 30 %
200 A
ok
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