ABB SPCJ 4D29 - Page 57

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Fig. 8. RXIDG-type inverse-time characteristics of the overcurrent and earth-fault unit SPCJ 4D29.
0.6
0.7
0.8
0.9
1.0
k
1
2 3 5 7 8 9 10 20
I/I>
6
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
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0.9
1
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8
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60
70
t/s
30 40
6
9
0.05
4
0.1
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0.4 0.5
0.3