Instructions For Connecting The Pqf-Manager To A Filter System; Checking The Insulation Of The Assembly - Earth Resistance - ABB PQFS Installation, Operation And Maintenance Instructions

WARNING: Ensure that the filter supply is isolated upstream during filter
installation. If the system has been connected to the supply before, wait for 25
minutes after disconnecting the mains power in order to discharge the capacitors.
Always verify by measurement that the capacitors have discharged. DC capacitors
may be charged to more than 800 Vdc.
The DC capacitors of PQFS units are automatically charged once the auxiliary
circuit is energized, regardless of whether the filter is switched off or on. Do not
touch the DC capacitor link when the auxiliary fuse box is closed.
The active filter control board carries dangerous voltages and shall not be touched
once the the auxiliary circuit is energized, regardless of whether the filter is
switched off or on. Once the auxiliary circuit is opened, high voltage levels can
still be present on the control board.
disconnecting the mains power before touching the control board.
6.2

Instructions for connecting the PQF-Manager to a filter system

PQFS filter master units are by default equipped with the PQF-Manager user interface. In
some cases however it may be needed to remove and reconnect the PQF-Manager to
the filter.
In order to successfully connect the PQF-Manager to a PQFS filter unit, it suffices to plug
the male connector attached to the PQF-Manager into the corresponding female
connector attached to the filter hardware. This is illustrated in
The female connector associated with the filter hardware is situated at the top right side
of the control board and becomes visible after removing/lifting slightly the filter protective
cover.
Note that the connector incorporates the following signals:
6.3 Checking the insulation of the assembly – earth resistance
WARNING: Follow the procedure outlined below to check the insulation of the filter
assembly. Applying other methods may damage the filter.
Every filter has been tested for insulation between the main circuit and the chassis/frame
at the factory. Therefore, do not make any voltage tolerance or insulation resistance tests
36 Electrical design and installation ç Manual Power Quality Filter PQFS
Figure 28: Connection of the PQF-Manager user interface to the PQFS filter hardware
· The 230 V power supply connection
· The internal CAN bus connection
Respect a delay of 25 minutes after
Figure 28.