ABB ACS580 Series - Guidelines for Installing the Drive to a TT System

Note: These are the EMC filter and varistor screws of different drive frame sizes.
Ground-to-phase varistor screwsEMC filter screwsFrame size
VAREMC screwR1…R3
R4 v2
VARTwo EMC screwsR4…R5
VARTwo EMC screwsR6…R9
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Guidelines for installing the drive to a TT system
The drive can be installed to a TT system under these conditions:
1. Residual current device has been installed in the supply system.
2. These screws have been disconnected. Otherwise EMC filter and
ground-to-phase varistor capacitor leakage current will cause the residual
current device to trip.
Ground-to-phase varistor screwsEMC filter screwsFrame size
VAREMC screwR1…R3
R4 v2
VARTwo EMC screwsR4…R5
VARTwo EMC screwsR6…R9
Drive
N
L3
L2
L1
Note:
• Because the EMC filter screws have been disconnected, 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 reason.
134 Electrical installation – Global (IEC)