It (Ungrounded) Systems; Disconnecting The Emc Filter Capacitors - ABB ACS800 Hardware Manual

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IT (ungrounded) systems

In units with EMC filter options (+E202 and +E200 in the type code), disconnect the
filter capacitors before connecting the drive to an ungrounded system.
WARNING! If a drive with EMC filter selection +E202 or +E200 is installed on an IT
system [an ungrounded power system or a high resistance-grounded (over 30 ohms)
power system], the system will be connected to earth potential through the EMC
filter capacitors of the drive. This may cause danger or damage the unit.

Disconnecting the EMC filter capacitors

Remove the two screws shown below.
Note concerning units of frame size R5: When the capacitors of EMC filter +E202
or +E200 are disconnected, the EMC Directive requirements in second environment
will not be fulfilled.
Note concerning units of frame size R6: When the capacitors of EMC filter +E202
are disconnected, the EMC Directive requirements may not be fulfilled in first
environment, but are fulfilled in second environment. When the capacitors of EMC
filter +E200 are disconnected, the EMC Directive requirements in second
environment are still fulfilled.
See chapter Technical data /
Electrical installation
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CE marking.
View of frame size R5