Manual Operations For Opening And Closing The Circuit-Breaker - ABB SACE Emax 2 Installation, Operation And Maintenance Instructions For The Installer And The User
Low voltage air circuit-breakers
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Manual operations for opening
and closing the circuit-breaker
15 | © 2017 ABB | 1SDH000999R0002 - ECN000058721 - Rev. B
The following is the sequence of steps for closing and opening the circuit-breaker:
1.
Check that the circuit-breaker is open (open / closed indicator "O - OPEN"), and check that the springs
are discharged (spring signalling device "white - DISCHARGED SPRING") as indicated in Figure 18.
2.
Charging the springs - Pull the lever [A] downwards several times until the springs charged signalling
device [B] is "yellow - CHARGED SPRING" as indicated in Figure 19.
Figure 18
3.
Check that the circuit-breaker is open (open/closed signalling device "O - OPEN"), and check that the
springs are charged (springs signalling device "yellow - CHARGED SPRING") as indicated in Figure 20.
4.
Closing - Press the closing pushbutton "I - Push ON" as indicated in Figure 21.
Figure 20
5.
Check that the circuit-breaker is closed (open/closed indicator "I - CLOSED"), and check that the
springs are discharged (spring signalling device "white - DISCHARGED SPRING" as indicated in
Figure 22.
6.
Opening - Press the opening pushbutton "O - Push OFF" as indicated in Figure 23.
Figure 22
A B
Figure 19
Figure 21
Figure 23
Continued on the next page
Emax E1.2 circuit-breakers | 4 - Description
ABB | SACE Emax 2
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