Siemens NXAIR - Page 71

Assembling the panels
110-0084.9 / 15 NXAIR / ≤ 40 kA 71
Busbar current
1250 A
2000 A / 2500 A
3150 A / 4000 A
Bolt type
M12x40
M12x60
M12x80
Bag with connecting elements
110-1827.3
110-1828.3
110-1829.3
Busbar version for switch-disconnector panel for U
r
≤ 17,5 kV
The standard version of the busbar system contains plastic tubes that cover each horizontal bar. Before
assembling the busbars, plastic insulation tubes must insert on each horizontal bar of busbar system.
In the switch-disconnector panel, the busbars of phases L1, L2 and L3 are bolted with the copper spacer to the
feeder bars. Thereby, observe the following instructions as shown below.
NOTICE
Mounting the feeder bars
The connection of the feeder bars is always fixed at the last step to avoid the stress
on the feeder bars.
First, always mount the main busbars from right and left panel, on all
phases L1, L2, L3, and then make the connection of the feeder bars.
Observe the direction of the bolt head side and the bolted joint side of the
busbar connection with feeder bars.
Fig. 82: Assembly of 1250 A busbar, feeder 1250A
(1)
Busbar
(2)
Plastic
insulation tube
(3)
Feeder bar
(4)
Bolt M12x40,
conical spring
washer
(5)
Nut, conical
spring washer
(6)
Copper spacer
with three holes
(7)
Copper spacer
with four holes
Bag with connecting
elements:
110-0770.3
2
1
3
4
5
7
6