R3: Remove EMC and VAR screws.
R6: Remove EMC and VAR screws.
R8: Remove EMC DC and VAR screws.
Residual current device has to be installed in the sup-
ply system.
Note:
• 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.
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.
Ground-to-phase varistor screwsEMC filter screwsFrame size
VAREMCR3
VAREMCR6
VAR
1)
EMC DCR8
1)
VAR screw functions also as EMC AC screws in frame R8.
96 Electrical installation – IEC
To Next Page
Loading...
