21
PART B Installation, Operation & Maintenance
4.2.2.2 Unpacking of structure
Place the case horizontally on a flat surface before
opening the cover.
Check that all parts are included in the delivery.
Check the packing list.
Fix the Lower Leg Assly as shown
Fix M20 Plain Washer, Spring Washer & Hex nut or Expansion Bolts in case the
foundation is with expansion Bolts.
Keep Nuts slightly loose for flexibility during entire assembly
Fix Lower Legs of CT Structure Assembly [optional]
4.2.2.3
Arrangement with CT Structure [Optional]
Assembly sequences for Structure :
Arrangement without CT structure
Fix the Lower Leg Assly as shown in Fig.4
Fix M20 Plain Washer, Spring Washer & Hex nut
or Expansion Bolts in case the foundation is with
Keep Nuts slightly loose for flexibility during entire
Expansion bolts.
Assembly of structure.
Check that no parts have been damaged during
transport; especially the porcelain insulators.
Report any faults immediately to the ABB
representative.
Now fix Cross-Support Angles (6) as shown M12 bolts,
spring washers, plain washers & Hex Nus .
Fix Bottom Support Angles(4) as per the order bound GA drawing
washers &
hex nuts.
To achieve lower height and M12 bolts, spring washers, plain
For the sake of flexibility, do not fully tighten the fasteners.
4
6
Circuit Breaker Structure Assembly
of structure,
