ABB PQFA, Instruction Manual

Page: 38 / 98

PQFA Instructions Manual
Asea Brown Boveri Jumet S.A.
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The active filter is required to filter the loads of side A and side B but the
transformer busbar not being accessible, the CT’s cannot be installed in
central position.
Figure 6.4. Transformer busbar with no access: single-line diagram
For this configuration, three CT’s (one per phase) have to be installed on side
A et on side B (in total, 6 CT’s). Those CT’s will then feed 3 summation CT’s
(one per phase) that are connected to the active filter. This CT topology is
represented in figure 6.5.
LOADS
(Side A)
LOADS
(Side B)
PQF