When To Disconnect Emc Filter (Option +E202) Or Ground-To-Phase Varistor - ABB ACS880-11 Hardware Manual

When to disconnect EMC filter (option +E200 or +E202) or

ground-to-phase varistor
Frame Symmetrically grounded
size TN-S systems
R3 Do not disconnect
R6 Do not disconnect
R8 Do not disconnect
1
Drive
Note 1: Corner-grounded systems: Frames R3 and R6 are evaluated for use on
corner-grounded systems by UL standards. Not evaluated by IEC standards for use
on corner-grounded systems.
Note 2: These are the EMC filter and varistor screws of different drive frame sizes.
Frame EMC filter (+E200, +E202) screws
size
R3
R6
R8
*)
VAR screw functions also as EMC AC screw in frame R8.
Corner-grounded delta
1
Do not disconnect
Remove EMC DC screw
Remove EMC and VAR
L1
L2
L3
N
PE
EMC
EMC AC, EMC DC
EMC DC
Electrical installation – IEC 81
IT systems (ungrounded or
2
systems high-resistance grounded
Remove EMC and VAR
Remove EMC AC, EMC DC
only
Remove EMC and VAR
screws
2
L1
L2
L3
PE
Drive
2
L1
L2
L3
PE
Drive
Ground-to-phase varistor screws
3
[>30 ohms])
screws
and VAR screws
screws
3
L1
L2
L3
Drive
VAR
VAR
VAR*