Brake Resistor Assembly R0; Checking The Compatibility With It (Ungrounded) And Corner-Grounded Tn Systems; Emc Filter - ABB ACS560 Hardware Manual

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Brake resistor assembly R0...R3
Check the insulation of the brake resistor assembly (if present) as follows:
1. Check that the resistor cable is connected to the resistor, and disconnected
from the drive output terminals R+ and R-.
2. At the drive end, connect the R+ and R- conductors of the resistor cable
together. Measure the insulation resistance between the combined conductors
and the PE conductor by using a measuring voltage of 1 kV DC. The insulation
resistance must be higher than 1 Mohm.
1000 V DC,
> 1 Mohm
Checking the compatibility with IT (ungrounded) and
corner-grounded TN systems
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EMC filter

The internal EMC filter is not suitable for use on an IT (ungrounded) system or on
a corner-grounded TN system. Disconnect the EMC filter before connecting the
drive to the supply network. Check the table in
WARNING! WARNING!
Do not install the drive with the internal EMC filter connected on an IT system
(an ungrounded power system or a high-resistance-grounded [over 30 ohms]
power system), otherwise the system will be connected to ground potential
through the EMC filter capacitors of the drive. This can cause danger, or
damage the drive.
Do not install the drive with the internal EMC filter connected on a
corner-grounded TN system, otherwise the drive will be damaged.
ohm
Ground-to-phase varistor (page
Electrical installation 85
R+
R-
PE
86).