Electrical installation 69
Cables and PE busbar between integrated transformer
and drive
Drive with integrated transformer
Cables and PE busbar between drive and integrated transformer includes the following
connections:
• Transformer primary and secondary cables
• Temperature sensor cables
• Three-phase power supply cable to each of the transformer fan units
• PE Busbar to connect INU and TRU.
or
Auxiliary supply from internal main transformer (option)
• Heating cable (option)
The cables are identified by their specific number and are labeled with the designation of
the terminal where they are connected to.
The terminals for the primary and the secondary cables are located on the side wall of the
drive cabinet. The transformer terminals are accessible through the left side door of the
transformer unit. The cables must be mounted to the transformer terminals as shown in the
figure below.
1
2
1 Transformer unit
2 Drive unit
3 Control cable lead-through
4 PE busbar
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