Siemens NXAIR M - Page 142

Earthing and de-earthing the busbar system
142 NXAIR M 139-2021.9 / 07
After turning the operating lever to the end position, the position indicator of the busbar
earthing switch changes from the intermediate position to the OPEN position.
Fig. 246: Operating lever in end position
Remove the operating lever.
To close the actuating opening, push the operating slide down as far as it will go.
Fit a padlock to the operating slide and close it.
The busbar earthing switch has been switched from the CLOSED position to the OPEN
position, thus de-earthing the busbar. The position indicator of the busbar earthing switch
changes from the CLOSED position via the intermediate position to the OPEN position.
Fig. 247: Operating slide on busbar earthing switch
padlocked

The busbar system is de-earthed.