Closing The Circuit-Breaker Manually - Siemens NXAIR Operating Instructions Manual

Preconditions
•
Withdrawable circuit-breaker / circuit-breaker truck 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. 76: 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.

10.12 Closing the circuit-breaker manually

110-0134.9 / 14
(circuit-breaker 3AE5 as an example)
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.
INFORMATION
Auxiliary voltage for the panel connected
If the auxiliary voltage is disconnected when closing the circuit-breaker manually,
the spring energy store for closing the circuit-breaker is no longer recharged
automatically.
Connect the auxiliary voltage before closing the circuit-breaker manually.
Otherwise the spring energy store must be recharged manually with a
hand crank.
NXAIR / ≤ 40 kA
Operating the circuit-breaker panel
55