Panels with motor operating mechanism control
139-2021.9 / 07
NXAIR M
231
Instruction label on high-voltage door:
In addition to these instructions, an instruction label on the high-voltage door informs about proper handling
of the operating lever for the feeder earthing switch.
Fig. 393: High-voltage door: instruction label about
operation of the feeder earthing switch
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.
NOTICE
Covered control elements
For safety reasons, the actuating opening for earthing / de-earthing the feeder is
covered by the control door.
Open the control door to uncover the actuating opening on the high-
voltage door.
HINT
Earthing the feeder is only permissible if the withdrawable circuit-breaker is in test
position.
When earthing the feeder in this way, the position of the circuit-breaker is not
significant: The feeder may be earthed while the circuit-breaker is in OPEN
position or CLOSED position.
The procedures for earthing / de-earthing the feeder manually in panels with motor operating mechanism
control are identical with the procedures in panels without motor operating mechanism control.
For earthing / de-earthing the feeder manually, see chapters 10.15 and 10.16.
