Insulated Busbar
The insulated bus option is available for non-arc resistant
and for arc-resistant MNS-SG.
Boot insulation should be installed after the splice kit is
installed; the flexible boot is wrapped around the splice
connection and is secured with plastic tights.
NOTE: The holes at the ends of all busbars ensure
adequate
adjustment within the required tolerances (±20 mils [0.5
mm] in any direction).
If the lineup has been installed
properly, the busbars
in adjacent sections will line up. Never
drill or modify
busbars if alignment is poor. Ensure that the
adjacent
sections are properly and completely connected
together mechanically before connecting the horizontal bus
splices.
Do not clean the contact surfaces on a new SG. For
connections to existing SGs with heavy oxidation, you may
need to clean the contact surfaces by sanding lightly with a
fine grain aluminum oxide paper.
4.6. Splicing Ground busbar
The horizontal ground bus must be spliced between
adjacent sections. Splice links are also provided on the
right-hand side of each shipping section and may be
loosened and bridged to the adjacent section.
Ground Bus Bar
The ground bus bar is designed to use one single bar
across the sections or the shipping pallet, this bus bar is
provided at the bottom-rear side of each section running
from side-to-side on the cable compartment of all
sections.
Ground Bus Bar Splice link
The lateral ground bus is machined with a series of holes
spaced 2.0 in (50 mm) apart for attaching ground lugs and
other conductors.
Loosen and remove the bolts holding the ground splice
link(s) in place and put the link(s) to the right to straddle
the ground bus in the adjacent (right-hand) section.
Tighten the two (2) M12 bolts using an 18mm socket
wrench. Torque the bolts to 60 +/- 2 N-m. It is
recommended to use an 18mm socket with an integral
universal joint, to easily access and tighten all of the bolts.
To Next Page
Loading...
