ABB OHB Installation, Service And Maintenance page 25

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Outdoor SF6 Circuit Breaker - Type
OHB: Instruction for Storage,
Installation, Service and
Maintenance
Original Title: ABB Breaker
Uploaded by Sampath Kumar
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7.6.3 Assembly of entire Circuit-Breaker on structure
Refer Fig. 19 before going for assembly.
Slowly lower the Circuit-Breaker in such a
way that the Cabinet enters inside the Upper
Leg Assemblies & rests on the support
angles & the Duct rests on the Upper Leg
Assmblies of structure.
Ensure Stiffener-Plates are put inside the
duct & assemble the structure with duct
using M12 bolts, spring washers, plain
washers & Hex Nuts.
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Engage Cabinet with the supp
Fix M12 bolts, spring washers,
washers from bottom of the
angles. [M12 Nuts are welded
the cabinet]
This completes the assembly.
Now fasten all hardware; do no
ropes until all hardware are fas
Fix Current transformer on C-C
frame (optional)
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