ABB ACS880-34, Руководство по оборудованию

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88 Installation instructions

When to disconnect EMC filter (E202) or ground-to-phase
varistor: TN-S, IT, corner-grounded delta, and midpoint-grounded
delta system
Note : These are the EMC filter and varistor screws.

Guidelines for installing the drive to a TT system
The drive can be connected on a TT system under these conditions:
1. Residual current device has been installed in the supply system.
2. These screws and ARFI-10 have been disconnected. Otherwise EMC filter and
ground-to-phase varistor capacitor leakage current will cause the residual current
device to trip.
Frame
size
Symmetrically grounded
TN systems (TN-S
systems)
1
Corner-grounded and
midpoint-grounded delta
systems
2
IT systems (ungrounded or high-
resistance-grounded [>30 ohms])
3
R11 Do not disconnect EMC AC
or VAR screws. Do not
disconnect .ARFI-10. Do not install the drive on a
corner-grounded or mid-point
grounded system. Disconnect EMC AC and VAR
screws. Disconnect ARFI-10
Frame
size
EMC filter (+E202) Ground-to-phase varistor screws
R11 EMC AC VAR
Frame
size
EMC E202 Ground-to-phase varistor screws
R11 EMC AC, ARFI-10 VAR
Drive
PE
N
L3
L2
L1
Drive Drive
PE
L3
L2
L1
L3
L2
L1
Drive
PE
L3
L2
L1
1 2 3
2