Chapter 3 – Electrical Installation
ACA 6xx Sections and ACS/ACC 6x7 (132 to 3000 kW) Frequency Converters 3-27
EMC Earthing at the
Cable Entry
360° high frequency earthing of the control cable screen at the cable
entry is available as an option from ABB (figure below).
Special for Top Entry When each cable has its own rubber grommet, sufficient IP and EMC
protection can be achieved. However, if very many control cables
come to one cabinet, plan the installation beforehand as follows:
1. Make a list of the cables coming to the cabinet.
2. Sort the cables going to the left into one group and the cables
going to the right into another group to avoid unnecessary crossing
of cables inside the cabinet.
3. Sort the cables in each group according to size.
4. Group the cables for each grommet as follows:
Cable diameter in mm Max. number of cables per grommet
<
13 4
<
17 3
< 25 2
> 25 1
EMI conductive cushions
Base plate
Holes for
position screws
Side view Top view
Lead-through plate
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