Hardware Manual

Table Of Contents
Electrical installation 89
Checking the compatibility with IT (ungrounded) systems
EMC filters +E200 and +E202 are not suitable for use in an IT (ungrounded) system.
If the drive is equipped with filter +E200 or +E202, disconnect the filter before
connecting the drive to the supply network. Undo the two screws which are marked
with EMC AC and EMC DC on the skeleton. See EMC filter disconnecting
instructions for ACS880-01 drives with filters +E200 and +E202 (3AUA0000125152
[English]).
For frame R4, contact ABB
WARNING! If a drive with EMC filter +E200 or +E202 is installed on an IT
system (an ungrounded power system or a high resistance-grounded [over
30 ohm] power system), the system will be connected to earth potential through the
EMC filter capacitors of the drive. This can cause danger, or damage the drive.