Installing Busbar Voltage Transformers - Siemens NXPLUS C Installation And Operating Instructions Manual

802-9081.9 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • Revision 11
15.7

Installing busbar voltage transformers

The voltage transformers are delivered separately. For installation, the busbars must be
mounted and accessible from the front. If required, remove any mounted low-voltage
compartments.
For the following panel types, a lower voltage transformer frame (229 mm) must be mounted:
• Circuit-breaker panel (450 mm)
• Auxiliary transformer panel
Fig. 87: Voltage transformers mounted
on 1250 A busbar
Fig. 89: Voltage transformer mounted on the busbar (view from the front)
①
Voltage transformer
② Storage box
③ Voltage transformer frame
④
Nut-and-washer assembly M8 / bolt M6 with
1
plain washer
⑤ Plain washer (DIN EN ISO 7093-1-8)
⑥ Bolt-and-washer assembly M8x20
⑦ Cast-resin cone of voltage transformer
INFORMATION
Fig. 88: Voltage transformers with lower voltage
transformer frame
⑧
Centering nut (tightening torque: 10 Nm)
⑨ Hexagon nut M12* (tightening torque: 50 Nm)
⑩ Conical spring washer *
⑪
Contact half-shell *
⑫ Threaded stud M12/M16 (tightening torque: 10 Nm)*
⑬ End adapter/cross adapter
* Component pre-assembled at the end adapter/cross
adapter
For panel types LS 450 mm and auxiliary transformer panel
1
Installation
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