ABB SPAJ 141 C - Page 51

19
PAINOS
PAINOS
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
k
1
2 3 4 5 7 8 9 1 0 2 0 I/I>6
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
0.2
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0.5
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0.7
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0.9
1
2
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5
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10
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70
t/s
1234510206789
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
0.2
0.3
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0.5
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0.7
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0.9
1
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t/s
Fig. 4. Inverse-time characteristics of the low-set overcurrent unit in relay module SPCJ 4D24
a) Normal inverse b) Long-time inverse