Assembling the panels
84 NXAIR / ≤ 40 kA 110-0084.9 / 15
Installing the busbar cover in the busbar compartment
Sharp-edged sheets
The metal parts of the busbar cover and upper shutter may have sharp edges.
Sharp-edged sheets inside the switchgear can cause injuries by getting cut and
damage cables.
Put on personal protective equipment (e.g. cut-resistant gloves and arm
sleeves).
When working inside the switchgear, it must be observed that cables do not
touch any sharp-edged sheets. Cover sharp-edged spots, if required.
Preconditions
• Feeder earthing switch in CLOSED position
• High-voltage door open
• Low-voltage connector stowed away
• All panel versions except for contactor panels with panel width 435 mm and switch-disconnector
panel:
• Busbar cover available
• Connecting elements available: 11 nuts size M8
• Switch-disconnector panel only:
• Busbar cover available
• Connecting elements available: 3 bolts M8x20 with contact washers
Procedure
Install the busbar cover (1) between the busbar compartment and the switching-device
compartment.
To fix the busbar cover (1), tighten the nuts all around hand-tight:
• 11 nuts M8 with contact washers (2)
Tighten the fixing nuts all around with a tightening torque of 25 Nm.
Fig. 100:11 bolted joints on busbar cover
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