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Operating the circuit-breaker panel
56
NXAIR /
≤ 40 kA
110-0134.9 / 14
INFORMATION
If an undervoltage release is fitted, it must be connected to the auxiliary voltage for
the switching operation, as otherwise closing is not possible.
INFORMATION
Unexpected switching noise and vibration
Operating the circuit-breaker discharges and/or charges the spring energy store
abruptly. This causes a short loud noise and low vibration.
Expect switching noise and low vibration from inside the circuit-breaker.
INFORMATION
The opening spring is charged during the closing operation.
Preconditions
•
Withdrawable circuit-breaker / circuit-breaker truck in service position or in test position
•
Circuit-breaker in OPEN position
•
Spring state indicator for the closing spring shows CHARGED
•
High-voltage door closed
•
Panel set to local control
•
Padlock (optional) removed from actuating opening
•
Push rod available
Fig. 77: High-voltage door with
actuating opening
Fig. 78: Push rod
Procedure
Turn cover of actuating opening aside using the rotary button located over it.