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ABB VD4 - Permissible Number of Vacuum Interrupter Switching Operations

ABB VD4
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10 VD4 Vacuum-circuit-breaker | Instruction manual 534/01
2.4 Permissible number of vacuum interrupter switching operations
Figure 2/9: Permissible number of vacuum interrupter operating cycles n as a function of the breaking current I
a
.
(Reference see section 2.1 and 3.1 Technical data page 7)
0,05
5
0,1 0,2 0,3 0,4 0,5 0,6 0,8 1
6
7
8
10
2
3
4
5
6
7
8
10
2
2
3
4
5
6
7
8
10
3
2
3
4
5
6
7
8
4
2
3
4
5
6
7
8
10
5
2 3 4 5 6 7 8 109 20 30 40 50
10
Breaking current l
a
(kA)
Number of operating cycles n
0,05
5
0,1 0,2 0,3 0,4 0,5 0,6 0,8 1
6
7
8
10
2
3
4
5
6
7
8
10
2
2
3
4
5
6
7
8
10
3
2
3
4
5
6
7
8
4
2
3
4
5
6
7
8
10
5
2 3 4 5 6 7 8 109 20 30 40 50
10
Breaking current l
a
(kA)
Number of operating cycles n
0,05
5
0,1 0,2 0,3 0,4 0,5 0,6 0,8 1
6
7
8
10
2
3
4
5
6
7
8
10
2
2
3
4
5
6
7
8
10
3
2
3
4
5
6
7
8
4
2
3
4
5
6
7
8
10
5
2 3 4 5 6 7 8 109 20 30 40 50
10
Breaking current l
a
(kA)
Number of operating cycles n
0,05
5
0,1 0,2 0,3 0,4 0,5 0,6 0,8 1
6
7
8
10
2
3
4
5
6
7
8
10
2
2
3
4
5
6
7
8
10
3
2
3
4
5
6
7
8
4
2
3
4
5
6
7
8
10
5
2 3 4 5 6 7 8 109 20 30 40 50
10
Breaking current l
a
(kA)
Number of operating cycles n
Diagram D) Diagram E)
Diagram A) Diagram B)

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