Operation with CNI coupler or generator internal CDN
The coupling network CNI 503 is operated via the generator UCS / VCS / EFT and its operation panel or via ISM
windows software. Only the different coupling modes can be changed or preselected.
Then it is very important that the control cable between surge generator and coupler, EFT generator and
coupler or UCS and coupler is connected and that the coupler is switched on (power switch at the rear
panel) before the test generators are switched on.
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 generators operation panel.
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.
CNI detection
After power ON the UCS / VCS or EFT generator, the devices check if an external CNI is
detected.
CNI detected: Working with external CNI
CNI not detected: Working with internal generator CDN
When changing between internal CDN to external CNI it is necessary to switch OFF/ON the system. When
CNI is not used switch off the CNI before power on the USC500N5