ABB ACH480 Series - Category C3; Category C4

WARNING!
Do not install a drive with the internal EMC filter connected to an earthing system
that the EMC filter is not suitable for (for example, an IT system). The supply
network becomes connected to ground potential through the internal EMC filter
capacitors, which can cause danger or damage to the drive.
WARNING!
To prevent radio-frequency interference, do not use a category C2 drive on a
low-voltage public network that supplies domestic premises.
￭ Category C3
The drive has an internal EMC C2 filter as standard. No EMC C3 filter for category C3
is available.
￭ Category C4
If the provisions in category 2 or 3 are not met, the requirements of the standard can
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.
1
2
3
4
5
6
7
8
9
4
6
Medium voltage network1
Neighboring network2
Point of measurement3
Low voltage4
Equipment (victim)5
Equipment6
Supply transformer7
Static screen8
Technical data 151