Category C3; Category C4 - ABB ACS560 Hardware Manual

130 Technical data
WARNING!
The drive may cause radio interference if used in residential or domestic
environment. The user is required to take measures to prevent interference, in
association to the requirements for the CE compliance listed above, if necessary.
Note:
• Do not install a drive with the internal EMC filter connected on IT (ungrounded). The
supply network becomes connected to ground potential through the internal EMC filter
capacitors which may cause danger or damage to the drive. For disconnecting the EMC
filter see section
• Do not install a drive with internal EMC filter connected on corner-grounded TN systems;
otherwise the drive will be damaged. For disconnecting the internal EMC filter see
section Frames R0...R3 (page
￭

Category C3

The drive complies with the standard with the following provisions:
1. The motor and control cables are selected as specified in this manual.
2. The drive is installed according to the instructions given in this manual.
3. For the maximum motor cable length with 4 kHz switching frequency, see section
Maximum recommended motor cable length (page
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.
￭

Category C4

If the provisions under
be met as follows:
1. It is ensured that no excessive emission is propagated to neighboring low-voltage
networks. In some cases, the inherent 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.
Frames R0...R3 (page
64).
Category C3 cannot be met, the requirements of the standard can
64).
120).