Panels with motor operating mechanism control
214
NXAIR M
139-2021.9 / 07
Preconditions
Feeder earthing switch in OPEN position
Circuit-breaker in OPEN position
Panel set to local control
Control door open
Withdrawable circuit-breaker in service position or in test position
Double-
bit key for selecting racking mode inserted and access mode indicator shows “H”
Procedure
To release electrical access to the withdrawable circuit-breaker, turn the double-bit key
90° clockwise until the operating mode indicator changes to “M”.
from
to
Fig. 363: Turning the key clockwise
Remove the double-bit key and push the operating slide downwards as far as it will go.
Close the control door.
Fit a padlock to the control door and close the padlock.
Racking the withdrawable circuit-breaker is set to electrical operation.
23.6 Selecting interlocking
NOTICE
Conflicting operation
The requirement of setting the panel to either local or remote control prevents
operating the panel locally and centrally at the same time.
For any local operations ─ manual or electrical ─ set the panel to local
control, for example by switching the local-remote switch to LOCAL
position.
HINT
Blocking any racking operation is the precondition for opening the high-voltage
door.
Before opening the high-voltage door, set the access mode indicator to
“T”.