Siemens NXAIR - Page 389

Panels with motor operating mechanism control
110-0134.9 / 14 NXAIR / ≤ 40 kA 389
Preconditions
• Feeder earthing switch in OPEN position
• Circuit-breaker in OPEN position
• Panel set to local control
• Control door open
• Withdrawable circuit-breaker / circuit-breaker truck in service position or in test position
• For electromagnetic interlock (optional):
• Electromagnetic interlock deactivated
• Access mode indicator shows "M" or "T"
Procedure
To release the actuating opening for the double-bit key, lift the operating slide (1) and hold it.
Insert the double-bit key (2).
Fig. 705: Lifting the operating slide and inserting the key
To release manual access to the withdrawable circuit-breaker / circuit-breaker truck, turn the
double-bit key until the operating mode indicator changes to "H":
• To change from "M" to "H", turn 90° counter-clockwise
• To change from "T" to "H”, turn 90° clockwise
from
to
from
to
Fig. 706: Turning the key counter-clockwise
Fig. 707: Turning the key clockwise