Category C4 - ABB ACS880-37LC Hardware Manual

162 Technical data
WARNING!
A drive of category C3 is not intended to be used on a low-voltage public network
which supplies domestic premises. Radio frequency interference is expected if
the drive is used on such a network.
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Category C4

If the provisions under Category 3 cannot be met, the requirements of the standard can be
met as follows:
1. It is ensured that no excessive emission is propagated to neighbouring low-voltage
networks. In some cases, the natural suppression in transformers and cables is sufficient.
If in doubt, the supply transformer with static screening between the primary and
secondary windings can be used.
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1 Medium voltage network
2 Neighboring network
3 Point of measurement
4 Low voltage
5 Equipment (victim)
6 Equipment
7 Supply transformer
8 Static screen
9 Drive
2. An EMC plan for preventing disturbances is drawn up for the installation. A template is
available from the local ABB representative.
3. The input power cables, motor cables and control cables are selected as specified in
the appropriate drive manual(s).
4. The drive is installed according to the instructions given in the appropriate drive
manual(s).
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