Do not install the drive with the internal EMC filter connected on a corner-grounded
TN system, otherwise the drive will be damaged.
Note:
When the internal EMC filter is disconnected, the drive EMC compatibility is considerably
reduced. See section
EMC compatibility and motor cable length (page 125)
■
Ground-to-phase varistor
The ground-to-phase varistor is not suitable for use on an IT (ungrounded) system.
Disconnect the ground-to-phase varistor before connecting the drive to the supply network.
Check the table below.
WARNING!
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.
Check from the table below if you have to disconnect the EMC filter (EMC) or ground-to-phase
varistor (VAR).
IT systems (un-
grounded or high-
resistance groun-
ded [>30 ohms])
3
Corner grounded
TN systems
2
Symmetrically
grounded TN sys-
tems (TN-S sys-
tems)
1
Ground- to-
phase varistor
(VAR)
EMC filter
(EMC)
Frame
sizes
Disconnect
Disconnect
Do not disconnect
-
EMC (1 screw)
R0…R3
Disconnect
Do not disconnect
Do not disconnect
VAR (1 screw)
-
Disconnect
Frames R4 and R5
cannot be used in
corner grounded TN
systems.
Do not disconnect
-
EMC (2
screws)
R4…R5
Disconnect
Do not disconnect
VAR (1 screw)
-
Disconnect
Disconnect
Do not disconnect
-
EMC (2
screws)
R6…R8
Disconnect
Do not disconnect
Do not disconnect
VAR(1 screw)
-
1
2
3
Drive
PE
N
L3
L2
L1
Drive
Drive
PE
L3
L2
L1
L3
L2
L1
■
Frames R0…R3
To disconnect the internal EMC filter or ground-to-phase varistor, if needed, do as follows:
1.
Switch off the power from the drive.
Electrical installation 67
11
Summary of Contents for ACQ80-04 Series
Page 1: ...ABB DRIVES FOR WATER ACQ80 04 drives 0 75 to 160 kW 1 0 to 215 hp Hardware manual...
Page 2: ......
Page 4: ......
Page 18: ...18...
Page 24: ...24...
Page 38: ...38...
Page 50: ...50...
Page 64: ...64...
Page 98: ...98...
Page 110: ...110...
Page 140: ...Frame R3 IP20 140 Dimension drawings...
Page 146: ...146...
Page 162: ...162...
Page 168: ......