ABB ACS580-01 Quick Installation page 18

18 EN – R6...R9 Quick installation guide
WARNING! Do not install the drive with the ground-to-phase varistor connected
on an IT system (an ungrounded power system or a high-resistance-grounded
[over 30 ohms] power system), otherwise the varistor circuit can be damaged.
R0-
Check from the table below if you have to disconnect the EMC filter (EMC) or ground-
R4
to-phase varistor (VAR). For instructions on how to do this, see page 19.
R6-
R9
Frame EMC
sizes filter
R6-
R9
(EMC)
R6...R9 EMC
EN
(2 screws)
-
DA
1
DE
ES
FI
FR
IT
Drive
NL
PL
PT
RU
SV
TR
ZH
Ground- Symmetrically
to-phase grounded TN
varistor systems
(TN-S systems)
(VAR)
- Do not disconnect
VAR Do not disconnect Do not disconnect
(1 screw)
2
L1
L2
L3
N
PE
Corner grounded
TN systems
1
Disconnect
3
L1
L2
L3
PE
Drive
IT systems
2
(ungrounded or
high-resistance
grounded
3
[>30 ohms])
Disconnect
Disconnect
L1
L2
L3
Drive