Siemens NXAIR - Page 174

Closing the connection compartment / connection duct
174 NXAIR / ≤ 40 kA 110-0084.9 / 15
Preconditions
• Feeder earthing switch in CLOSED position
• High-voltage door open
• Low-voltage connector stowed away
• Panel versions with withdrawable circuit-breaker / circuit-breaker truck or
withdrawable disconnector / disconnector truck only:
• Protection plate of switching-device compartment available
• Connecting elements available:
• 4 nuts M8 with contact washers
• All panel versions except for contactor panels with panel width 435 mm and switch-disconnector panel:
• Partition available
• Connecting elements available:
• 10 bolts M8x20 with contact washers and plain washers size 8
• 5 bolts M8x20 with contact washers
• Contactor panels with panel width 435 mm only:
• Partition available
• Connecting elements available:
• 7 bolts M8x20 with contact washers for the left part of the partition
• 4 bolts M8x16 with contact washers for the right part of the partition
Procedure
All panel versions except for contactor panels with panel width 435 mm and switch-disconnector
panel:
Install the partition (1) between the connection compartment and the switching-device
compartment.
To fix the partition (1), tighten the bolts all around hand-tight:
All panel versions except for contactor panels with panel width 435 mm:
• 10 bolts M8x20 with contact washers and plain washers size 8 acc.
to ISO 7093 (2)
• 5 bolts M8x20 with contact washers (3)
Tighten the fixing bolts all around with a tightening torque of 25 Nm.
Fig. 246: All panel versions except for
contactor panels with panel width 435 mm
and switch-disconnector panel: 15 bolted
joints on partition
1
3
2