Page 158 - 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 73.
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 74.

A
B
Figure 73 Figure 74

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 75.
4. Closing - Press the closing pushbutton “I - Push ON” as indicated in Figure 76.

Figure 75 Figure 76
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 77.
6. Opening - Press the opening pushbutton “O - Push OFF” as indicated in Figure 78.

Figure 77 Figure 78

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