46 Electrical design and installation
Manual Power Quality Filter PQFS
Figure 28: Connecting the three power cables to the filter reactor terminals
Remarks:
−
The left reactor terminal corresponds to phase L1 (R, A)
−
The middle reactor terminal corresponds to phase L2 (Y, B)
−
The right reactor terminal corresponds to phase L3 (B, C)
The cable lugs of the feeding cables should comply with:
−
Maximum lug width: in accordance with terminal width
−
Minimum lug eye diameter: M8
Appropriate torque (20Nm) must be applied to ensure that cables are properly fixed.
7.
Slide the bottom protective cover up and fix it with the screws to seal off the power
supply terminals
8.
In addition to the power cables and the earth connection cable, the CT connection
cable and any other control cables used for enhanced functions can at this stage be
passed through the protective cover into the filter panel.
9.
Preparation of the filter to match the networks voltages:
The active filter nominal voltage setting must be adapted to the actual network
voltage by adjusting the tap setting of the auxiliary transformer. If the tap setting
for your network voltage is not available, then choose a tap just above the network
voltage present (e.g. for 390V network choose 400V tap setting). The auxiliary
transformer is situated at the bottom right side of the filter (Cf.
, item 15).
Ensure that the filter panel is isolated before changing the transformer tap setting.
By default the tap setting of the auxiliary transformer is set at the highest voltage
position at the filter production stage.
WARNING: The tap setting of the auxiliary transformer’s primary must be adapted
according to the network voltage to avoid a too high or too low auxiliary voltage.
If the tap setting for your network voltage is not available, then choose a tap just
above the network voltage present (e.g. for 390V network choose 400V tap
setting). Excessive (auxiliary) voltage levels will lead to filter damage.
