Mechanical Interconnection Of The Enclosures; Control Board Cable Interconnection - ABB PQFS Installation, Operation And Maintenance Instructions

Figure 36: Overview of the connections to be made between two filter enclosures
The interconnection description is given in
Table 23: Interconnections between two filter cubicles
Item Description
1 Control board intercommunication cable through CAN bus (RJ45 cable)
2 CT interconnection cable
Four steps have to be followed to electrically interconnect a new PQFS unit with an
existing filter. They are outlined in the next four paragraphs.

6.11.1 Mechanical interconnection of the enclosures

All cables to the PQFS unit such as power cable as well as interconnection cable between
modules must pass through the bottom cable entry hole provided in the PQFS box.

6.11.2 Control board cable interconnection

WARNING: Failure to interconnect the control boards in an appropriate way will result
in filter malfunctioning and possibly sever damage of the unit.
Interconnect the control boards of a following unit with a previous filter unit by an RJ45-
based communication cable. This cable is provided with each unit.
AC power supply
L
N
Output filter
Preload
resistor
Unit 1
Power Unit 1
Master Unit
Manual Power Quality Filter PQFS  Electrical design and installation 53
Output filter
...
(1)
(2)
Unit 2
Power Unit 2
Master or Slave Unit
Table 23.
L
N