ABB VD4X Instruction Manual page 9

T E C H N I C A L D A T A
—
2.3 Permissible number of switching operations of the vacuum interrupters in relation to
Figure 2/2:
breaking current
Permissible number
of vacuum interrupter
operating cycles n as
10
8
a function of the
7
6
breaking current Ia
5
4
(Reference see section
3
2.1 – Technical data
2
page
6)
10
8
7
6
5
4
3
2
10
8
7
6
5
4
3
2
10
8
7
6
5
4
3
2
10
8
7
6
5
Diagram A
10
8
7
6
5
4
3
2
10
8
7
6
5
4
3
2
10
8
7
6
5
4
3
2
10
8
7
6
5
4
3
2
10
8
7
6
5
Diagram C
—
Figure 2/2
5
4
3
2
0,05 0,1 0,2 0,3 0,4 0,5 0,6 0,8 1 2 3 4
Breaking current I (kA)
a
5
4
3
2
0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.8 1 2 3 4
10
8
7
6
5
4
3
2
10
8
7
6
5
4
3
2
10
8
7
6
5
4
3
2
10
8
7
6
5
4
3
2
10
8
7
6
5
5 6 7 8 9 10 20 30 40 50
Diagram B
5 6 7 8 9 10 20 30 40 50
Diagram D
5
4
3
2
0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.8 1 2 3
5
10
8
7
6
5
4
3
2
4
10
8
7
6
5
4
3
2
3
10
8
7
6
5
4
3
2
2
10
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 2 3
Breaking current I (kA)
a
9
4 5 6 7 8 9 10 20 30 40 50
4 5 6 7 8 9 10 20 30 40 50