Danfoss VLT 5000 Serie Mode D'emploi page 4

English
Mechanical Installation
The following must be observed.
1) The filter and frequency converter must have a
large ground-contact surface. Mount on a
common, earthed metal plate or switch gear
cabinet panel.
2) The contact surface for mounting the RFI filter
must be clean, unpainted, bright metal. Paint or
other insulating coatings must be removed prior
to mounting the filter.
3) It is important to ensure good electrical contact
from the installation back plate through the
installation screws to the metal cabinet of the
VLT frequency converter.
4) Use of star washers to assure HF connection is
recommended.
See the connection diagrams on the following pages.
4
VLT ® Series 5000/6000 HVAC
Wiring
1) Position the toroid between the filter output and
the converter. Install tie wraps to secure the
wiring (In IP54 auxiliary enclosures, tie-down
holes are provided.)
2) Only the 3-phase wiring passes through the
toroid. The physical earth (PE) cable must
not pass through the toroid.
3) Cable connections between the RFI filter and
the frequency converter should be as short as
possible.
4) The mains maximum wire size is 95mm
180A filters and 120mm
5) The PE wire must have a cross-section greater
than 50% of the cross-section of the mains wire.
6) Do not install mains and motor cables parallel
and near to one another.
7) Maximum cable length of shielded motor wire for
Class 1B RFI filter performance is 50m.
Dimension Diagram: 180A RFI Filter Dimension Diagram: 180A RFI Filter Dimension Diagram: 180A RFI Filter Dimension Diagram: 180A RFI Filter Dimension Diagram: 180A RFI Filter
2 X 2 for 400A filters.
MI.56.F1.83 - VLT is a registered Danfoss trademark
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