Reel FlexiMova mm F0K37 Series, Руководство по проектированию и установке

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8 Electrical connections
40 of 80
FlexiMova
®
mm - Design and Installation
 T he shield of the signal cable must only be connected on the converter
side with its ground terminal . If the signal cable is particularly long
(longer than 20 m) connect the shield at both ends.
 No signal cables must be arranged parallel to the power cables and they
must maintain a distance of at least 0.3 m.
 If it is not possible to keep at a distance of at least 0.3 m employ suitably-
sized metal separators (sheets) that will achieve an equivalent surface
distance.
 If it is not possible to avoid intersecting the signal cables and the power
cables, at least make it a 90° angle.
 Arrange the signal and power cables in separate conduits.

The earth connections of the signal cables must be kept separate from
those of the power cables; the connections will then be made to the PE
input cable to the panel.

For complex systems it is preferable to use a ground rod dedicated solely
to power.
 Choose the cable section and insulation suitable for the power of the
converter.
 Make sure that the cable is firmly fixed to the converter’s terminal block:
a loose cable could cause electrical discharges that could in turn damage
the converter.
8.1.4 Inverter – Motor power connections
The inverter-motor power connection must:

Be fitted with the correct cable selected for the specific use.
 Use a low capacity cable.
 Use shielded cables with a coverage ≥ 80%.
 Use ferrites (when required).

Comply with the correct wiring regulations.
Table 28 indicates the type of cables to use and the corresponding ferrites
when necessary (also depending on the length of the power cable between
the inverter and the motor) to maintain the declared EMC category.
Failure to comply with these instructions will downgrade the product to
category C4.
The use of high parasitic capacitance cables can trigger the converter’s
protection. Always verify that the parasitic capacitance in accordance with the
length of the connection does not exceed 10 nF (if the parasitic capacitance
value is not available contact the cable manufacturer for a copy of the technical
sheet). If this requirement cannot be met then line reactors or output filters are
required to reduce the dV/dt (see relevant connection table).