ABB VM1 Instruction Manual page 34

Vacuum circuit-breaker
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10 5
8
7
6
5
4
3
2
1250 A
4
10
1600 A
8
7
6
5
2000 A
4
3
2
10 3
8
7
6
5
4
3
2
10 2
8
7
6
5
4
3
2
10
8
7
6
5
0,05
0,1
0,2
0,3 0,4 0,5 0,6
0,8 1
Breaking current l
(kA)
Diagram E)
Figure 10b:
Permissible number of vacuum interrupter operating cycles n as a function of the breaking current I
(Reference see section 10.2.1 and 10.3.1 – Performance data and weight page 35/36 and 41/42)
34 VM1 Vacuum circuit-breaker | Instruction manual 504/05
2500 A
3150 A
2
3
4 5 6 7 8
9
10
20
30
40 50
10 5
8
7
6
5
4
3
2
1250 A
4
10
1600 A
8
7
6
5
2000 A
4
3
2
10 3
8
7
6
5
4
3
2
10 2
8
7
6
5
4
3
2
10
8
7
6
5
0,05
0,1
0,2
0,3 0,4 0,5 0,6
0,8 1
Breaking current l
(kA)
Diagram F)
2500 A
3150 A
2
3
4 5 6 7 8
9
10
20
30
.
a
40 50

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