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discharging the AC capacitors to avoid electrical shock. Never discharge DC capacitors through short circuit.
Always use a current limiting resistor of minimum 100Ω.
WARNING: To avoid electrical shock due to residual voltage on the capacitors, the left side cover of the filter
should not be removed once the filter is commissioned.
WARNING: If the ground is not done properly, under certain fault conditions in the unit or in the system to
which it is connected it can result in full line voltage between chassis and earth ground. Severe injury or
death can result if the chassis and earth are touched simultaneously.
WARNING: The neutral current in a PQFS filter may be as high as 3 times the line current hence do not use a
4 pole breaker to connect this type of filter as the rating of the neutral pole may not be adequate.
3. Knowing your filter
The PQF range of active filter is modular in design. It consist of mainly an IGBT based inverter (current generator)
and digital control system together with a user interface (PQF Manager). A simplified schematic with external connec-
tions to the PQF is described in the diagram below:
Supply
Current measurements
3
4
5
The user connection description is given in
STATUS
Approved
1
PQF main
controller
PQF Manager
Figure 16: PQF schematic overview with user connections
Table
3.
SECURITY LEVEL
Public
2
Compensation current
PQF current
generator 1
PQF Filter panel
DOCUMENT ID
9AKK107045A4703
Q UICK STA RT-UP G UI DE
Non-linear load(s)
- Three-phase
- Single-phase
6
REV.
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