Siemens NXPLUS C Installation And Operating Instructions Manual page 249

Medium-voltage switchgear, fixed-mounted circuit-breaker switchgear up to 24 kv, extendable, single busbar, metal-enclosed, gas-insulated
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1
Initial situation
4
Switch the left-hand three-position
disconnector to CLOSED position (insert the
operating lever and turn 90° clockwise).
7
Push the right-hand control gate to the
right (the interrogation lever locks in lower
position. The right-hand actuating opening
for the READY-TO-EARTH function opens).
10
To earth the left-hand busbar system, close
the circuit-breaker.
802-9081.9 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • Revision 11
Bus sectionalizer panel with two three-position disconnectors: Earthing the left-hand
busbar system
2
Push the interrogation lever downwards
and hold it.
5
Remove the operating lever (the
interrogation lever and the control gate
return to their initial position).
8
Switch the right-hand three-position
disconnector to READY-TO-EARTH position
(insert the operating lever and turn 90°
clockwise).
11
Fit a padlock.
3
Push the left-hand control gate to the left
and hold it (the interrogation lever locks in
lower position. The left-hand actuating
opening for the DISCONNECTING function
opens).
6
Push the interrogation lever downwards
again and hold it.
9
Remove the operating lever (the
interrogation lever and the control gate
return to their initial position).
Operation
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