Siemens NXPLUS C

Installation
116/293 Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • 802-9081.9
➭ In case of end adapters, add the adjustment component ④ to obtain a symmetrical
clamping.
➭ Push the end adapter ⑤ or cross adapter ⑩ onto the end of the busbar.
➭ If no busbar current transformers are mounted, perform the same assembly operations on
the other end of the busbar.
➭ Remove residual mounting paste.
✔ The busbar unit is assembled.
Mounting the current
transformers
In switchgear with a busbar current of 1250 A, the current transformers are pre-assembled at
the factory.
Current transformers not pre-assembled at the factory:
• Switchgear with a busbar current ≤ 1600 A
• Air-insulated metering panel
➭ If required, install the current transformers together with the busbar, see page 124,
"Installing current transformers on the busbar"
Pre-assembled current
transformers
In case of pre-assembled current transformers, the bolted joint of the clamping bracket must
be undone before mounting the busbar units. If required, pull the current transformer out of
the clamping bracket.
➭ Push the busbar unit through the current transformer (observe the direction of side P1 at
the current transformer).
➭ Connect the busbar unit with the next end adapter or cross adapter.
➭ After mounting the busbar unit, mount the current transformer again.
Fig. 72: Pre-assembled current transformers at
the busbar (1250 A)
①
Bolted joint of clamping bracket
②
Current transformer