Siemens NXAIR Installation Instructions Manual page 84

Assembling the panels
Installing the busbar cover in the busbar compartment
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:
•
Tighten the fixing nuts all around with a tightening torque of 25 Nm.
Fig. 100:11 bolted joints on busbar cover
84
CAUTION
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.
11 nuts M8 with contact washers (2)
2
NXAIR /
1
≤
40 kA 110-0084.9 / 15