Commissioning Report - ABB PQFS Installation, Operation And Maintenance Instructions

Figure 85: Connection approach for installations where detuned capacitor banks are installed
adjacent to the active filter but downstream to the active filter CTs (background distortion present)
Figure 86: CT connection guidelines for the case that a passive filter is installed downstream of the
Please do not forget to fill in the commissioning report for future reference.

8.11 Commissioning report

The commissioning report is designed to help the person in charge of the commissioning.
Before installation and operation of the PQF, read the relevant sections of the Instruction
Manual.
Feeding
transformer Filter CTs
· In installations where active filters and passive filters are present, the active filters
must be installed downstream of the passive filter. If this is not possible, the CT
connection scheme of
Feeding
transformer Filter CTs
Further, when a passive filter and an active filter are installed on the same bus, it
is not recommended to select on the active filter the harmonics at or below the
tuning frequency of the passive filter. If these harmonics are selected, the SDP
function may stop filtering these harmonics temporarily resulting in a reduced
overall filtering performance.
· In installations where 2 non-compatible masters are connected to the same CT,
respect the following guidelines for best performance:
1. Select different harmonics on both units
2. If 1 above is not possible, put one filter in Mode 1 and the other filter in Mode 3
Note: 'Non-compatible'' master units are master units that cannot or are not
interconnected with the RJ45-communication cable.
PQFx
+ -
Figure 86 shall be used.
PQFx
+ -
active filter
Manual Power Quality Filter PQFS ç Commissioning instructions 125
Detuned
capacitor
bank
Passive
filter