EM TEST
coupling NX
Manual of operation
V 1.03
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8.3.
Operation with coupling NX or generator internal CDN
The coupling network of the coupling NX is operated and controlled via the compact NX generator. After power on,
the compact NX generator scans the system for searching all devices.
Power ON procedure
same time
second
first
same time
first
second
Result power on
OK
OK
FAIL,
generator cannot find the coupling NX,
switch
OFF / ON
compact NX generator
The test generator realizes that a three phase coupler is connected and shows the possible coupling modes in the
display of the generator. The complete system is controlled by the generator from front panel or software.
If the external coupling network is connected or switched on later than the generator, the generator must be reset by
switching power ON/OFF.
On the front panel of the coupler the user can switch ON/OFF the power supply of the EUT.
Using iec.control software the coupling matrix is completely controlled by software.
Coupling device detection
After power ON the compact NX, the controller searches all external devices.
coupling NX detected
:
Working with
external coupling device
coupling NX detected not detected
:
Working with
internal generator CDN
8.4.
Connection of DC Equipment
For the connection of DC power supplies following connections are provided.
Polarity
3- Phase coupler
1- Phase coupler
+ Pole
L1
L
- Pole
N
N
As DC input the terminals L1 and N must be used. These two plugs are marked at the rear side of with an
additional plus or minus sign.
TEST ON Switch
There are
special models for DC current
where the coupling network should have the same parameters for AC
and DC. A special DC mains switch is installed, for meet the DC specifications. This costly expansion requires a
larger enclosure than the normal version.
Models with
no special DC input
have a reduced DC current capacity. The switching capacity of conventional
AC contactors for DC application is limited. Therefore, the specification for DC current and voltage are reduced
compared to the AC specifications as shown in the technical data.
Summary of Contents for coupling NX series
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