Siemens NXAIR - Page 356

Accessing the connection compartment through the rear
356 NXAIR / ≤ 40 kA 110-0134.9 / 14
Insert the 2 sealing brackets (3) into the vertical gaps between the panels.
Install the horizontal ledge (4). Fix it by screwing the bolts hand-tight:
• 8 bolts M8x25 with contact washers and plain washers size 8
acc. to ISO 7093
Tighten the bolts with a tightening torque of 25 Nm.
Install one of the vertical ledges (5). Fix it by screwing the bolts hand-tight:
• 14 bolts M8x20 with contact washers
Tighten the bolts with a tightening torque of 25 Nm.
Proceed in the same way with the other vertical ledge.
(3)
Sealing brackets
(4)
Horizontal ledge
(5)
Vertical ledges
Fig. 657: All panel versions except for contactor panels with panel width 435 mm:
Installing ledges and brackets
✓
The rear wall is installed on the connection compartment.
INFORMATION
Final procedure steps
Now the panel can be integrated into the course of operation again, for example:
De-earthing the feeder.
Racking the withdrawable part / switching-device truck to service position.
3
4
5