ABB ACH580-31 Hardware Manual page 96

96 Electrical installation – IEC
Note 1: Frames R3 and R6 are evaluated for use on corner-grounded systems and
midpoint-grounded delta systems by UL standards. They are not evaluated by IEC
standards for use on corner-grounded or midpoint-grounded systems.
Note 2: These are the EMC filter and varistor screws of different drive frame sizes.
Frame size
R3
R6
R8
1) VAR screw functions also as EMC AC screws in frame R8.
R3: Remove EMC and VAR screws.
L1
R6: Remove EMC and VAR screws.
L2 R8: Remove EMC DC and VAR screws.
Residual current device has to be installed in the sup-
L3
ply system.
Note:
N
• Because the EMC filter screws have been removed,
ABB does not guarantee the EMC category.
• ABB does not guarantee the functioning of the
ground leakage detector built inside the drive.
• In large systems the residual current device can
trip without a real reason.
EMC filter screws
EMC
EMC
EMC DC
Ground-to-phase varistor screws
VAR
VAR
1)
VAR