28
Fig. 12. Inverse-time characteristic of overcurrent and earth-fault relay module SPCJ 4D28
RI-type inverse
1
2
3
4
5
6
7 8 9 10
20 I/I>
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
k
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
3
4
5
6
7
9
10
20
70
60
50
40
30
t/s
2
8
Summary of Contents for SPAA 341 C /E351
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