110 The PQF-Manager user interface Manual Power Quality Filter PQFS
− Display a message indicating whether the CT identification ended successfully or
not
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 in Table
44
Table 44: Automatic CT detection position-results presentation
Filter connection CT terminal
Physical CT location and orientation
Input 1 Line 1
Input 2 Line 2
Input 3 Line 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 Table 44. If the CTs have been connected wrongly, the corresponding line will read
e.g.
Input 1 -Line 3 …
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
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.
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