Compatibility Of Emc Filter With The Grounding System - ABB ACS180-04S-03A7-1 Hardware Manual

64 Electrical installation
WARNING!
Do not install a drive with the internal EMC filter connected to a grounding
system that the EMC filter is not compatible with (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.
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Compatibility of EMC filter with the grounding system

WARNING!
If you do not obey these instructions, injury to personnel or damage to the
drive can occur.
A metal EMC screw is used to connect the internal EMC filter. The screws are
installed at the factory. The material of the screws (plastic or metal) depends on