ABB ACS880-04XT Hardwarehandbuch Seite 7

EMC filter ARFI-10 (ordering code 68241561)
Check from this table if you have to remove EMC filter ARFI-10 or ground-to-phase
varistor (VAR screw).
Frame Symmetrically
size grounded TN systems
(TN-S systems)
R10, R11 Do not remove ARFI-10
or VAR.
1
Drive
Note: These are the EMC filter and varistor screws of different drive frame sizes.
Frame
size
R10, R11
Identifying different types of electrical power systems

To identify the electrical power system type, find out the supply transformer connection. If
that is not possible, measure these voltages at the distribution board before you connect
power to the drive:
1. input voltage line to line (U
2. input voltage line 1 to ground (U
3. input voltage line 2 to ground (U
4. input voltage line 3 to ground (U
Corner-grounded and
midpoint-grounded delta
1
Do not remove ARFI-10 or
L1
L2
L3
N
PE
EMC filter screw
-
)
L-L
)
L1-G
)
L2-G
).
L3-G
2
systems
(< 600 V)
VAR.
2
L1
L2
L3
PE
Drive
L1
L2
L3
PE
Drive
to-phase varistor screw
Update notice 3
IT systems (ungrounded or
high-resistance-grounded
3
[>30 ohms])
Remove ARFI-10 and VAR.
3
Drive
Ground-
VAR
L1
L2
L3