Siemens NXAIR M - LRM System Overview; Verifying LRM-ST Voltage Indicator; Verifying Safe Isolation from Supply with the LRM Device System

Operating the circuit-breaker panel
42 NXAIR M 139-2021.9 / 07
Preconditions
 Withdrawable circuit-breaker in service position or in test position
 Circuit-breaker in CLOSED position
 Spring state indicator for the closing spring shows CHARGED
 High-voltage door closed
 Auxiliary voltage for the panel connected
 Remote or local control
Procedure
Open the circuit-breaker via central or local electrical control element.
The spring state indicator for the closing spring does not change.
Fig. 56: Position indicator on the circuit-breaker, OPEN

The position indicator on the circuit-breaker changes from I position to 0 position. The circuit-
breaker is open.
10.11 Closing the circuit-breaker manually
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 operating the circuit-breaker manually, set the panel to local control,
for example by switching the local-remote switch to LOCAL position.