Manual Energy Storage Inverter ESI-S
The ESI-Manager user interface 107
After the CT detection procedure has finished, the user has to reprogram the inverter
settings that were automatically deselected.
If the CT identification ended successfully, the inverter carries on by:
−
Showing the CT positions found. This is done in a table format as given in
Table 43: Automatic CT detection position-results presentation
Inverter connection CT terminal
(a)
Physical CT location and orientation
(b)
Input 1
Line 1
Remarks:
(a)
This column refers to the inverter terminal X21 located in the inverter cubicle.
Input 1: inverter input X21/1-2 (L1, R, U)
(b)
This column refers to the physical location of the CT connected to the input shown in the
first column.
Line 1: CT connected in phase 1 (L1, R, U) with correct orientation
-Line1: CT connected in phase 1 (L1, R, U) with inversed orientation
When all CTs have been correctly installed, the ESI-Manager should display the
results as in
−
After showing the CT positions found, the customer is asked to either
acknowledge the results found (by pressing
) or either not to accept them by
pressing any other key. If any other key than
is pressed, the automatic CT
detection program will be quit. The CT parameters existing before the automatic
CT detection program was started will be restored.
If the CTs have been wrongly connected and the results are acknowledged by
the commissioning engineer, the inverter controller will automatically take into
account the wrong positions and correct them internally. Hence, there is no
need to correct the CT connections manually. However, in line with proper
installation guidelines, it may be recommended to correct physically the CT
installation. In that case, the CT setup of the inverter has to be adapted
accordingly.
−
When the CT positions have been acknowledged the inverter will carry on by
showing the CT ratio found phase per phase. The values shown are indicative only
and always have to be verified by the commissioning engineer. He can change the
values by entering the right CT ratio. In order to approve the value entered
has to be pressed.
explains the meaning of the text that appears on the
display:
Table 44: Automatic CT detection ratio-results presentation
Text on ESI-Manager display Meaning
Ratio found
Ratio found for the CT in the considered phase
E.g. 200 means a CT of 1000/5