ABB ACS580 Series - Page 133

IT systems (ungrounded or
high-resistance grounded
[>30 ohms]) (C)
Corner-grounded (B1) and
midpoint-grounded delta
systems (B2)
≤ 600 V
Symmetrically groun-
ded TN systems (TN-
S systems) ie. center-
grounded wye (A)
Frame
size
Disconnect EMC and VAR
screws.
Disconnect EMC screw.
Do not disconnect VAR
screw.
Do not disconnect
EMC or VAR screws.
R1…R3
R4 v2
Disconnect EMC screws (2
pcs) and VAR screw.
Not evaluated
1)
Do not disconnect
EMC or VAR screws.
R4…R5
Disconnect EMC screws (2
pcs) and VAR screw.
Do not disconnect EMC AC
or VAR screws.
Do not disconnect
EMC or VAR screws.
R6…R9
Disconnect EMC DC screw.
Drive Drive
PE
L3
L2
L1
L3
L2
L1
Drive
PE
L3
L2
L1
B1 C
B2
PE
L2
L3
L1
N
Drive
A
1)
Frames R4 and R5 are not evaluated for use on corner-grounded systems or midpoint-grounded delta
systems by IEC standards.
Electrical installation – Global (IEC) 133