Operating Lever For Earthing Switch - Siemens NXAIR Operating Instructions Manual

Operating the switch-disconnector panel
Fit a padlock (optional) to the operating slide and close it.
✓
The switch-fuse combination has been operated from CLOSED position to OPEN position.

18.8 Operating lever for earthing switch

Operating lever for earthing switch:
•
With the operating lever, the switching process at the feeder earthing switch can only be executed in
turning direction.
•
The turning movement into the opposite direction has a freewheel and does not move the feeder
earthing switch; the operating lever works like a ratchet spanner.
•
The feeder earthing switch is operated either clockwise or counter-clockwise according to the
switching function.
•
To use the operating lever, two instruction labels show the turning direction for the corresponding
switching function.
Switching function:
Turning direction of the
operating lever:
Instruction label on the
operating lever:
226
From OPEN to CLOSED position
Clockwise
Fig. 402: Instruction labels on the operating lever
NXAIR / ≤ 40 kA
From CLOSED to OPEN position
Counter-clockwise
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