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66 Electrical installation
Connection procedure
￭
Note: The instructions below are based on the cabinet construction where the charging
circuit is in the same cabinet with the supply module/s. The instructions are not
applicable to all possible solutions but only clarify the principles.
WARNING!
Obey the safety instructions given in
cabinets and modules safety instructions (3AXD50000048633
If you ignore the safety instructions, injury or death, or damage to the
equipment can occur.
If you are not a qualified electrical professional, do not do installation
or maintenance work.
1.
Make sure that you have the following components installed in the cabinet:
•
AC fuses for protecting the module
•
input power cable busbars
•
DC busbars of the drive cabinet
•
supply module(s)
•
charging circuit components
•
DC fuses, if necessary.
2.
Make the interconnections (if not made yet) between:
•
AC fuses for protecting the module
•
input power cable busbars
•
DC busbars of the drive cabinet
•
supply module(s)
•
charging circuit components. The connections of the ABB-defined charging
circuit with the terminal markings are shown in the example circuit diagrams
•
DC fuses, if necessary.
3.
Ground the module (if not made yet). If the grounding via the module fixing screws
is not good enough, connect a separate cable between the module grounding
point and the cabinet PE busbar. The grounding point is marked on the module.
Note: If the cabinet frame is painted (such as with Rittal VX25 enclosures), it is
important to make sure that a good galvanic connection to ground (PE busbar)
is achieved. You can, for example, remove the paint from the connection points
and use star washers.
Note: The connection to ground through fixing screws and the cabinet chassis is
not always good enough. To ensure the continuity of the protective bonding
circuit, you can connect the modules to the cabinet PE busbar with a copper busbar
or cable. The inductance and impedance of the PE conductor must be rated
according to permissible touch voltage appearing under fault conditions (so that
the fault point voltage will not rise excessively when a ground fault occurs).
4.
Lead the input power cables into the cabinet. 360° grounding of the cable shield
at the entry is recommended to suppress interference.
5.
Twist the input power cable shields to bundles and connect to cabinet PE (ground)
busbar. Connect the separate ground conductors/cables to cabinet PE (ground)
busbar.
6.
Connect the phase conductors to the input power cable busbars. For tightening
torques, see the technical data.
ACS880 liquid-cooled multidrive
[English]).
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