Siemens NXPLUS C Installation And Operating Instructions Manual page 74

Installation
Phase sequence
Preparing busbar
elements
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If the switchgear is delivered as a panel group, the busbar is mounted.
If the panels are delivered as individual units, the busbars are always delivered separately with
the accessories. To simplify busbar installation, we recommend not to mount the low-voltage
compartments before the busbars are assembled.
Do not unpack cross adapters, end adapters and busbars until right before assembly.
Before assembling the busbars, all frames must have been bolted together (see page 69,
"Bolting panels together").
Fig. 64: Phase sequence of bushings in the busbar compartment
Make sure that all busbar elements supplied are complete. Check for perfect condition and

cleanliness.
Before connection, brush oxidized copper surfaces (busbar ends and bushings).

Clean dirty busbar elements, cast resin and outside cones of the bushings dry with a lint-free

cloth.
Remove dirt in a dry way with a lint-free cloth. If dirt cannot be removed in dry condition,

apply a small amount of mounting paste to the lint-free cloth. Use only the mounting paste
provided for this purpose.
Grease the brushed copper surfaces evenly and over the whole surface with mounting

paste.
Screw threaded bolt M12 / M16 into the bushing with a screwdriver size 10 x 1.6 with

approx. 10 Nm (hand-tight).
Revision 05 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C Wind • 802-9074.9
Phase L1
Phase L2
Phase L3
Switchgear
front