ABB PQFS - Page 113

Manual Power Quality Filter PQFS  Commissioning instructions 113
[/Welcome/Settings/Commissioning/Man. CT settings]
For multi-unit filters the CT data for each unit has to be entered.
When entering the manual CT setup menu the user is subsequently prompted to define
for the selected filter unit of a filter system:
− for the CT connected to the filter CT terminals X21/1-2 (Input 1):
• in which line (phase) is it installed (Line 1, Line 2, Line 3)
• does the CT (cabling) have the good orientation (Line x) or not (-Line x)
Remark: If the CT installation is correct, enter ‘Line 1’.
If the CT is installed in the right phase but inversed, enter ‘-Line 1’.
− for the CT connected to the filter CT terminals X21/4-5 (Input 2):
• in which line (phase) is it installed (Line 1, Line 2, Line 3)
• does the CT (cabling) have the good orientation (Line x) or not (-Line x)
Remark: If the CT installation is correct, enter ‘Line 2’.
If the CT is installed in the right phase but inversed, enter ‘-Line 2’.
− for the CT connected to the filter CT terminals X21/7-8 (Input 3):
• in which line (phase) is it installed (Line 1, Line 2, Line 3)
• does the CT (cabling) have the good orientation (Line x) or not (-Line x)
Remark: If the CT installation is correct, enter ‘Line 3’.
If the CT is installed in the right phase but inversed, enter ‘-Line 3’.
− for the CT physically installed in Line 1 (L1, R, U):
• the CT ratio, which is always positive; e.g. a CT of 5000/5 has a ratio 1000
− for the CT physically installed in Line 2 (L2, S, V):
• the CT ratio, which is always positive; e.g. a CT of 5000/5 has a ratio 1000
− for the CT physically installed in Line 3 (L3, T, W):
• the CT ratio, which is always positive; e.g. a CT of 5000/5 has a ratio 1000
After entering all the above mentioned values, the filter resets and the settings are taken
into account.
Remarks:
− Pressing button during the manual CT setup procedure will result in:
• For single unit filters, the original CT-values and positions existing prior to
the start of the procedure being restored.
• For multi-unit filters, the new values will be stored in the units for which
the CT setting were already accepted, and will be restored to the initial
values in the other units.