Page 150 - Sace Emax 2 Manual for design engineers

ABB | SACE Emax 2
Manual operations for opening The following is the sequence of steps for closing and opening the circuit-breaker:
and closing 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 41.
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 42.

A
B
Figure 41 Figure 42

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 43.
4. Closing - Press the closing pushbutton “I - Push ON” as indicated in Figure 44.

Figure 43 Figure 44
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 45.
6. Opening - Press the opening pushbutton “O - Push OFF” as indicated in Figure 46.

Figure 45 Figure 46

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148 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Mechanical characteristics | 1 - E1.2 description