32 Mechanical design and installation
Manual Power Quality Filter PQFS
Table 16: Filter unit heat losses (maximum values)
Unit rating (Arms) Heat loss (kW)
30
1.5
45
1.8
60
2.1
70
2.6
80
2.9
90
3.2
100
3.5
120
4.3
5.4
Standard cubicle dimensions, fixing holes and clearances
Standard PQFS enclosures have dimensions of 588 x 326 x 795 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. However the filter can rest on its back against a wall.
A spacing of 500 mm below the filter bottom and above the filter top is recommended.
shows a view of a typical PQFS with characteristic dimensions.
