Connecting The Feeder Voltage Transformer - Siemens NXPLUS C Installation And Operating Instructions Manual

802-9081.9 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • Revision 11
25.2

Connecting the feeder voltage transformer

Internal arcing and explosion hazard
Will cause death, injury or considerable property damage.
When the panel is live, switching the voltage transformer disconnector can cause an internal
arc.
➭ Operate the voltage transformer disconnector only when the feeder is earthed.
To reconnect an earthed voltage transformer to the feeder, close the voltage transformer
disconnector again.
➭ Earth the feeder.
➭ Undo the fixing bolts of the cable compartment cover.
➭ Remove the cable compartment cover.
➭ Insert the double-bit key (5 mm diameter) into the actuating opening of the voltage
transformer disconnector.
➭ Remove the padlock from the voltage transformer disconnector.
Fig. 179: Switching the voltage transformer disconnector to CLOSED position
➭ Turn the double-bit key swiftly and continuously 180° clockwise.
✔ The position indicator of the voltage transformer disconnector shows the CLOSED position.
➭ Refit and lock the padlock.
➭ Remove the double-bit key.
➭ Hook the cable compartment cover in and fasten it with the fixing bolts.
✔ The voltage transformer disconnector is connected to high voltage and secured against
unauthorized opening.
DANGER
Operation
213/293