34 Mechanical design and installation Manual Power Quality Filter PQFS
Figure 21: Eyebolts and fixation of PQFS
− Carefully lift the enclosure and slide it down over the 2 fixation bolts until it is
supported by the 2 fixation plates. Screw the 2 bolts to ensure a good fixation of
the filter. Then the lifting tool can be disengaged.
− By means of a lower end fixation screw (not provided) the enclosure can be pushed
against the rear support at the bottom also (see Figure 22).
Figure 22: Lower end fixation
For additional units, the same procedure has to be followed.
5.6 Filter noise level
Active filters produce a certain level of noise when they operate. The noise level depends
on the operating conditions of the unit and on the rating of the filter. These values
should be taken into account when choosing a location for the filter.
Table 17: Noise level
30A - 60A 65.3 typically
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