ABB PQFS Installation, Operation And Maintenance Instructions page 95

NOTE: The automatic CT detection is repeated automatically for all the
units present in a multi-unit filter system.
After the CT detection procedure has finished, the user has to reprogram
the filter settings that were automatically deselected.
If the CT identification ended successfully, the filter carries on by:
Showing the CT positions found. This is done in a table format as given
o
in Table
Table 41: Automatic CT detection position-results presentation
Filter connection CT terminal
Input 1
Input 2
Input 3
Remarks:
(a)
This column refers to the filter terminal X21 located in the filter cubicle.
Input 1: filter input X21/1-2 (L1, R, U)
Input 2: filter input X21/3-4 (L2, S, V)
Input 3: filter input X21/5-6 (L3, T, W)
(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
Line 2: CT connected in phase 2 (L2, S, V) with correct orientation
-Line 2: CT connected in phase 2 (L2, S, V) with inversed orientation
Line 3: CT connected in phase 3 (L3, T, W) with correct orientation
-Line 3: CT connected in phase 3 (L3, T, W) with inversed orientation
When all CTs have been correctly installed, the PQF Manager should
display the results as in
wrongly, the corresponding line will read e.g.
In the example above, the CT connected physically in phase 3 (L3, T,
W) has been routed to the filter terminal for phase 1 (L1, R, U). Further
the CT orientation or the cabling has been inversed (k terminal of CT
connected to l terminal of filter and vice versa).
After showing the CT positions found, the customer is asked to either
o
acknowledge the results found (by pressing
them by pressing any other key. If any other key than
automatic CT detection program will be quit. The CT parameters
existing before the automatic CT detection program was started will be
restored.
41.
(a)
Physical CT location and orientation
Line 1
Line 2
Line 3
Table
Input 1
Manual Power Quality Filter PQFS ç The PQF-Manager user interface 95
41. If the CTs have been connected
-Line 3
...
) or either not to accept
(b)
is pressed, the