Circuit Breaker Racking-In/Racking-Out Operations - ABB SACE Emax 2 Installation, Operation And Maintenance Instructions For The Installer And The User
Low voltage air circuit-breakers
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Circuit breaker racking-in/
racking-out operations
18 | © 2017 ABB | 1SDH000999R0002 - ECN000058721 - Rev. B
The following is the procedure for the insertion of the moving part in the fixed part:
WARNING!
• Make sure the circuit-breaker is disconnected from all sources of energy.
• Switch the circuit-breaker to the open position with springs discharged.
WARNING! Before proceeding, remove all equipment used during the work and remove
processing waste and materials used.
1.
Make sure that signalling device on the fixed part indicates the DISCONNECT position. See Figure
29.
Figure 29
2.
Position the moving part in the fixed part and push until it comes to a stop. See Figure 30 and Figure
31.
Figure 30
3.
Extract the disconnection crank from its housing See Figure 32.
4.
Press the lock pushbutton and insert the crank in the moving part. In this phase the moving part is still
in DISCONNECT position. See Figure 33.
Figure 32
Figure 31
2
Figure 33
Emax E1.2 circuit-breakers | 4 - Description
ABB | SACE Emax 2
1
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