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Installation and commissioning guide
1ZSC000563-AAF EN, REV. 4, 2021-06-23
Terminal system
The bushing can be configured with one of two terminal systems: the fixed bottom contact system, or the
draw-rod system.
Terminal system
Option
Draw-rod system
Small bottom contact (N1=4)
Large bottom contact (N1=6)
Fixed bottom contact
-
Draw-rod system
The draw rod can be configured with an optional joint (53) to fit transformers with short bushing turrets.
The bottom-contact joint (56) is locked with threadlocking fluid as standard.
The bushing has draw rod with two upper joints (52), they are always locked with threadlocking fluid. All
joints must be locked with threadlocking fluid when the bushing is in operation at site.
G006981
39 Lower joint (at flange level).
52 Upper joint.
53 Additional joint (option).
54 Thread is locked with threadlocking fluid.
55 Thread is NOT locked with threadlocking fluid.*
56 Bottom-contact joint, locked with threadlocking fluid. Unlocked as option.*
* All unlocked threads must be locked with threadlocking fluid, when the bushing is installed at site.
Fixed bottom contact
The fixed bottom contact is installed when it is delivered from Hitachi ABB Power Grids.
CAUTION!
Do not remove the six fixing bolts.
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