ABB ACS2000 DFE User Manual page 85

CHAPTER 6 – ELECTRICAL INSTALLATION
Preparing cables for EMC plates
The orientation of the EMC plates is the same for
top and bottom cable entry: the sealing grommets
face always upwards.
1. Remove the grommets.
2. To ensure proper sealing, cut along the marking
that corresponds to the cable diameter.
3. Slide the grommet onto the cable. The grom-
met must fit tightly to prevent water entering
the cabinet.
4. The grommets can be discarded if cables are
entered through the cabinet floor.
5. If necessary, remove the entry plate and push
the cable through the entry holes.
6. Prepare the cables as illustrated in 6-5.
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The picture below shows the difference between
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References
top and bottom cable entry, when making use of
—
EMC plates.
6-6 Top and bottom cable
entry with EMC plates
Top cable entry
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6-6
(A) illustrates how cables with an outer
cable screen or shield are prepared
bonding with the metal enclosure of the cab-
inet.
(B) illustrates how cables without an outer
screen or shield are prepared.
Power cable
entry
6.9.3 Connecting the cables
NOTICE
Risk of flashover!
High voltages will be present in the terminal com-
partment. High voltages can cause flashover
between the electric potential of different conduc-
tors, and the electric potential of a conductor and
earth.
Therefore, a minimum clearance of 55 mm must be
maintained between a conductor and the terminals
of any other conductor, and between a conductor
and earth.
Checking the cable insulation
• Measure the insulation of each cable before
for EMC
connection and verify that the results are within
the specification of the cable manufacturer.
• Leave the cables unconnected at both ends
until the commissioning personnel has given
permission to connect them.
Connections
Connect the cables to their corresponding bus-
bars:
• the feeder cables to busbars U1, V1, W1,
• the motor cables to busbars U2, V2, W2,
• the screen ends of all conductors and the
shields of all cables to the FE ground busbar,
• the ground cable to the PE ground busbar,
• the equipotential bonding conductor to the PE
ground busbar.
Bottom cable entry
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