Step 1: Visual And Installation Check; Step 2: Setting The Address Of Each Unit In A Multi-Unit Filter And Terminate The Can Bus - ABB PQFM Instruction Manual

8.2

Step 1: Visual and installation check

WARNING: Make sure that the filter supply is isolated during the visual and installation
check. For safety reasons, this should be done upstream of the active filter and before
removing the protective internal grid. Open the auxiliary power fuse holder. In multi-
unit filters, ensure that all units are disconnected from the supply. Verify that the filter
DC capacitors are discharged before touching them. Failure to adhere to these
guidelines may result in lethal electric shock and/or filter damage.
WARNING:
Before performing any maintenance work, please short and ground the three line
terminals. The DC capacitor needs 25 mins to discharge after disconnection. Please
wait for this duration before touching any live parts even after discharging the AC
capacitors to avoid electrical shock.
WARNING: Make sure that the filter is installed at a location where no conductive dust
is present. Conductive dust when distributed in the filter panel may lead to equipment
failure.
- Check that the mechanical and electrical installation fulfils the requirements
described in
- Pay attention to the ambient temperature noting the filter cooling requirements.
- Check visually the condition of the filter (e.g. for transportation damage).
- Remove the anti-corrosion modules which are affixed at the inside of the door
(top side).
- Check the tightness of all connections including power cable connections, CT
connections, digital I/O connections on the PQF-Manager and the control board
connections inside the filter.
- Ensure that the feeding cable protection devices are rated appropriately.
- Check that the filter cooling fan is free running.
8.3 Step 2: Setting the address of each unit in a multi-unit filter and
terminate the CAN bus
Each filter is defined by a filter address. This address is by default set to 1.
In a multi-filter arrangement, the address of each unit has to be set to a unique value.
Setting two filter units in the same system to the same address will lead to a conflict and
will inhibit the filter from running.
160 The PQF-Manager user interface ç Manual Power Quality Filter PQFM
There are AC capacitors & DC capacitors connected inside this filter.
Chapter 5 and Chapter 6 of this manual.