AEG ME09 Installation, Operation And Maintenance Manual page 75

B1
B1 B2
B1 B3
B1 B3
2 of 3 breaker interlock with priority (Type D)
With the 2 of 3 interlock in opera on, one of the three breakers
has priority over both the others, hence when the priority
breaker is ON the other 2 MUST be OFF. Also entailing that
when the priority breaker is OFF the other 2 breaker can be
turned ON. This is typically used for a main e- main
arrangement.
G
B1 B2
0 0
I 0
0 I
B2
Type A
A
G
B1 B2
0 0
I 0
0 I
B3
0 0
Type B
B
B1 B2
0 0
I 0
0 I
0 0
B2
I 0
0 I
I I
Type C
C
B1 B2
0 0
I 0
0 I
0 0
B2
I 0
Type D
D
Priority
LOCKS
1 of 2 Breaker
Only 1 from 2 breaker can be closed.
B3
0
0
0
I
B3
0
0
0
I
I
I
0
B3
0
0
0
I
I
3.
3
3.3-02