Atec Com-Power-CDN-M Series User Manual
Coupling / decoupling networks features, Description, Application
E-9
Coupling / Decoupling Networks
Features
Frequency Range - 150 kHz - 80 MHz
Meets EN 61000-4-6 requirements
Current Rating: up to 25 Amps
Individual Calibration
Two Year Warranty
Description
The M series powerline Coupling / Decoupling Net-
works (CDN) are for testing from 150 kHz - 80 MHz
according to the EN 61000-4-6 standard for immunity
to conducted disturbance induced by radio frequency
fields. The standard M series CDNs are available with
25 amperes current rating.
The coupling network delivers injected common mode
current disturbance signals through the power line con-
ductors to the equipment under test (EUT). The
decoupling networks are used to ensure that the dis-
turbing signals injected on the powerline of the EUT
by the coupling networks do not interfere with any of
the auxiliary equipment connected to the EUT. Each
CDN contains integrated direct capacitive coupling
along with a high impedance choke for inductive
decoupling.
All CDNs are individually calibrated to meet the im-
pedance requirement of EN 61000-4-6. However, test
level calibration must be performed on site to deter-
mine the minimum required test signal needed to
achieve the required voltage levels specified by EN
61000-4-6. The appropriate calibration accessories for
conducting the test is available from Com-Power.
Application
During the test, the CDN is connected to the powerline
cables between the equipment under test (EUT) and
auxiliary equipment (AE). The number of conductors
in the cable will determine which CDN to use for the
test.
The M125 CDN is used to couple common mode and
modulated signals onto single power line systems. This
CDN is ideal for electronic systems that uses the chas-
sis as the DC return. The M225 CDN is for systems
with two wire power conductor cables without an earth
terminals and the M325 is for single phase two line
cables with the an earth ground conductor. The M425
is used for three phase systems. The M525 CDN is used
for three phase systems with neutral and protected earth
ground conductors. All CDNs are also fitted with safety
sockets for connecting the devices under test.
CDN selection table
Models
CDN-M125, M225, M325, M425, M525
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Com-Power Corporation
(949) 587 - 9800
www. com-power.com
M Series