ABB ACS580-07 - Disconnecting the EMC Filter and Ground-To-Phase Varistor (R6 to R9); Disconnecting the Ground-To-Phase Varistor (R10 and R11)

Connection diagramElectrical power system typeU
L3-G
U
L2-G
U
L1-G
U
L-L
PE
L3
L2
L1
Midpoint-grounded delta system
(nonsymmetrical)
0.5·X0.5·X0.866·XX
L3
L2
L1
IT systems (ungrounded or high-
resistance-grounded [>30 ohms])
nonsymmetrical
Varying
level versus
time
Varying
level versus
time
Varying
level versus
time
X
Disconnecting the EMC filter and ground-to-phase varistor (R6 to R9)
To disconnect the internal EMC filter or ground-to-phase varistor, do as follows:
1. Switch off the power from the drive.
2. Open the cover, if not already opened.
3. To disconnect the internal EMC filter, remove the two EMC screws.
4. To disconnect the ground-to-phase varistor, remove the varistor screw.
EMC (DC)A
EMC (AC)B
VARC
Disconnecting the ground-to-phase varistor (R10 and R11)
Varistor (VAR) grounding wire is attached next to the control circuit compartment. Disconnect
it. Insulate the end and attach it.
94 Electrical installation