6. Construction
1. Extraction Truck
2. Fuse Box
3. Contact Fingers (They are different between 720 A and 400 A)
4. Shutter’s charge mechanism
5. Vacuum bottles
6. CPT (Control Power Transformer)
7. Extraction Truck Assembly
ABB’s extraction truck assembly for MCC is integral to the controller itself, in lieu of being inside the MCC controller cell.
Vacuum controller, power fuses, control power transformer (CPT) and all auxiliary contacts are mounted on a truck assembly and are completely removable from
the cell to allow maintenance outside the cell and away from energized primary and secondary circuits.
1
6
4
2
5
44
3
Fig. 2 Extraction truck assembly
5 SafeGear
®
Motor Control Center Controller Installation, Operation and Maintenance Manual
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