Preparing The Main Bus Bushing; Inspect And Clean; Installing The Main Bus Link - Eaton Power Xpert IGX Instruction Booklet

Instruction Booklet
IB022023EN
Effective April 20232
Revision #21
Figure 22. Main bus link.
Figure 23. Main bus insulating sheath.
Figure 24. Main bus conductor and sheath composite.
24
EATON www.eaton.com/IGX
Instructions for the installation and
commissioning of Power Xpert IGX
Figure 25. Main bus link between Power Xpert IGX vertical
sections.

4.8.1. Preparing the main bus bushing

On each phase main bus tank, remove the plastic dust covers from
the main bus bushings by removing (3) M8 bolts. Using the supplied
special cleaning wipes, clean the red epoxy parts of the main bus
bushing. Allow to air dry after cleaning.

4.8.2. Inspect and clean

Power Xpert IGX Main Bus require an accompanying insulating
sheath. All bus links, insulating sheaths, ground wires and
terminations must be inspected for damage or defects prior to
installation.
All Power Xpert IGX insulating sheath mating surfaces must have no
Bubbles
•
Scratches
•
Visible damage
•
Foreign material contaminants
•
Evidence of wear
•
If any surface contamination is noticed on any Main Bus component,
it must be cleaned. Remove any dirt, oil or grease on any silicone
insulator using a soft clean, lint-free wipe.
Clean insulating sheath mating surfaces with cleaning cloths soaked
in cleaning solvent (see 2.2.1. Standard accessories (included with
Power Xpert IGX):, furnished as part of Power Xpert IGX hardware
kits. Apply medium force to clean the gray area of the insulating
sheath (see Figure 23) where it forms a seal with the main bus
bushing installed in the tank. Never clean outside of the gray area.
The solution may cause a slight expansion of the silicone rubber, so
any cleaned silicone parts must be air-dried for at least 15 minutes
after cleaning.

4.8.3. Installing the main bus link

Install a main bus link into the main bus tank bushing by aligning the
end in center of contact springs and pushing in firmly. A twisting
motion may be used while pushing in to help fully seat the main bus
link. When fully seated, main bus link should be perpendicular to
tank.
medium-voltage switchgear