Standard Enclosure Dimensions And Clearances; Instructions For Mounting The Filter - ABB PQFS Installation, Operation And Maintenance Instructions

5.3

Standard enclosure dimensions and clearances

Standard PQFS enclosures have dimensions of 588 x 310 x 705 mm (width x depth x
height). Each enclosure contains one power unit and is fitted with its own main contactor.
Power cables with protecting fuses can be connected to each PQFS from the bottom.
A spacing of 30 mm between the filter sides and walls or other enclosures is
recommended.
A spacing of 500 mm below the filter bottom and above the filter top is recommended.
Figure 20
If a filter system consists of more than one filter unit, the units should be installed next to
each other. If it is not otherwise possible, additional units can be mounted above the
existing unit(s). However, care has to be taken that the hot air of the bottom unit cannot
be sucked in by the fans of the unit mounted above. An example of such an arrangement
is given in
5.4

Instructions for mounting the filter

The wall on which the filter unit is mounted must be able to support the weight of the filter,
which is about 120 kilograms. Please note that one enclosure contains always one unit.
In order to mount a filter unit on to the wall, follow the steps outlined below:
30 Mechanical design and installation ç Manual Power Quality Filter PQFS
shows a view of a typical PQFS with characteristic dimensions.
Figure 20: View of a typical PQFS with characteristic dimensions
Figure 21.
Figure 21: Example of an installation where PQFS units are mounted above each other
588 mm
705 mm
310 mm