Category C3 - ABB ACS380 Hardware Manual

116 Technical data
If it is used in a residential or domestic environment, the drive can cause radio-
frequency interference. If it is necessary, take measures to prevent interference, in
addition to the requirements for the CE compliance.
WARNING! 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. To disconnect the EMC filter, refer to
WARNING! Do not install a drive with internal EMC filter connected on corner-
grounded TN systems; otherwise the drive will be damaged. To disconnect the
EMC filter, refer to


Category C3

This is applicable to ACS380-040x-4/-2 drives with an internal EMC C3 filter.
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, refer to
Motor cable length
WARNING! To prevent radio-frequency interference, do not use a category C3
drive on a low-voltage public network which supplies domestic premises.
EMC filter disconnection
on page 107.
EMC filter disconnection
on page 63.
on page 63.