Siemens SINOVA - Commissioning Checklist

Description
2.1 Mechanical components
3WJ Air Circuit breakers
28 Operating Instructions, 12/2022, L1V30828903001-01
2.1.4.7 Commissioning checklist
Checks and work to be carried out
Before commencing work on the device, observe the instructions in Chapter Safety
instructions (Page 7).
1. Open the circuit breaker and discharge the stored-energy spring.
2. Insert the crank handle (for withdrawable circuit breakers).
3. Move the circuit breaker to the test position (for withdrawable circuit breakers).
4. Press the red reset button to reset the mechanical reclosing lockout.
5. Connect the auxiliary voltages.
6. Set the parameters on the electronic trip unit.
7. Test the auxiliary functions.
8. Close the control cabinet door.
9. Move the circuit breaker to the connected position (for withdrawable circuit breaker).
10.Remove the crank handle (for withdrawable circuit breakers).
11.Charge the stored-energy spring.
Conditions for ready-to-close status (depending on equipment with accessories)
Undervoltage release
energized (auxiliary voltage present)
Shunt trip
not energized
Closing coil
not energized
Mechanical reclosing lockout
Set to RESET
Mechanical circuit breaker interlocking
not effective
Locking provisions
not activated
Observing status displays
The circuit breaker is ready for closing when the READY window displays OK. It can then be
closed manually or by means of a control command.