Siemens NXAIR Installation Instructions Manual page 60

Assembling the panels
Busbar assembly
Bag unit with connecting elements
An individual bag with connecting elements for connection of the busbars with the feeders is attached to each
busbar compartment.
Busbar version NXAIR for U
4
2
Fig. 58: Assembly of 1250 A busbar,
feeder ≤ 1250 A, U
L3
Fig. 59: Side view of 1250 A busbar assembly,
feeder ≤ 1250 A, U
60
≤ 12 kV
r
INFORMATION
Number of connecting elements in end panel:
The connections between busbars and feeder bars in the end panel are to
be executed with 4 connecting elements on each phase.
3
1
≤ 12 kV
r
L2
L1
≤ 12 kV
r
NXAIR /
(1) Busbar
(2) Feeder bar
(3) Nut, conical spring washer
Bolt M12x40,
(4)
conical spring washer
Arrowhead indicates the inserting
direction of the bolts
Bag with connecting elements:
110-0770.3 or 110-1221.3
≤
40 kA 110-0084.9 / 15