Assembling the panels
110-0084.9 / 15 NXAIR / ≤ 40 kA 53
7.6 Assembling the busbars
The following instructions for busbar assembly also apply to busbar versions with insulation (optional).
Bolts and nuts
The threads of the bolts and nuts must be dry and non-greasy.
Do not apply grease to the threads of the bolts and nuts.
Busbar assembly
• The easiest way to assemble the busbar is from the side of the panel!
• The busbar can also be assembled from the top; however, this is not
recommended as it is incomparably more complicated due to the pressure relief
duct.
• Alternatively, the busbar can be assembled and monitored by using the busbar
cover in the switching-device compartment.
• In the case of contactor panels with panel width 435 mm, the busbar must
absolutely be mounted from the side, as the busbar compartment is accessible
neither through the rear wall nor through the roof plate.
Connecting elements
• The bolts, conical spring washers and nuts necessary for assembling the busbar
are supplied in a bag unit together with each panel.
•
The bag unit is attached to the sheet-steel enclosure of the busbar compartment.
Check contact surfaces of busbar, brush if necessary and apply a thin film of
Vaseline.
Bolt the busbars to the corresponding feeder bars without distortions or gaps between
both bars.
Bolt the busbars to the corresponding feeder bars using 2 of the supplied bolts each.
Observe the inserting direction of the bolts (see the drawings below). The threads of
the bolts and nuts must be dry and non-greasy.
After removing the connecting elements, the packing materials of the bag unit must be
disposed of in an environmentally compatible way.
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