Modular units

Appendices Solefuse fuses
Fuse and limitation curves
The diagram shows the maximum limited broken current value
as a function of the rms current value which could have occured
in the absence of a fuse.
AMTED398078EN.indd
DE53620
DE53621
Fuse curve 7.2 - 12 - 17.5 - 24 kV
Time (s)
1000 8
6
4
2
100 86
4
2
10 86
4
2
1
8
6
4
2
0.1 86
4
2
0.01
10
6.3 A
10 A
16 A
20 A
25 A
31.5 A
43 A
63 A
80 A
100 A
125 A
2 4 6 8 100
Limitation curve 7.2 - 12 - 17.5 - 24 kV
Maximum value of the limited broken current (kA peak)
100
8
6
4
2
10
8
6
4
2
1
8
6
4
2
0.1
0.1
2 4 6 8 1000
Ia = 1.8 Ik 2
Is = Ik 2
2 4 6 8
10000
Current (A)
125 A
100 A
80 A
63 A
43 A
31.5 A
25 A
20 A
16 A
10 A
6.3 A
2 4 6 8 2 4 6 8 2 4 6 8
1 10 100
Rms value of the presumed broken current (kA)
103