ABB ACS180 - Earthing System Compatibility Check; EMC Filter; When to Disconnect the EMC Filter

Note: Moisture inside the motor reduces the insulation resistance. If you think
that there is moisture in the motor, dry the motor and do the measurement
again.
1000 V DC,
> 100 Mohm
U1-PE, V1-PE, W1-PE
ohm
M
3~
U1
V1
W1
PE
Earthing system compatibility check
￭
EMC filter
The drive ACS180-04S-...-1/4 has an internal EMC filter as standard. You can install
the drive to a symmetrically grounded TN-S system. If you install the drive to
another system, you must disconnect the EMC filter.
Note: If you disconnect the EMC filter, the electromagnetic compatibility of the
drive decreases.
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.
￭
When to disconnect the EMC filter
The table shows different earthing systems, and when you need to disconnect the
EMC filter (metal EMC screw).
Electrical installation 61