ABB SPAJ 141 C User Manual And Technical Description page 50

18
t/s
7 0
6 0
5 0
4 0
3 0
2 0
1 0
9
8
7
6
5
4
3
2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
1 2 3
Fig. 3. Inverse-time characteristics of the low-set overcurrent unit in relay module SPCJ 4D24
a) Extremely inverse
PAINOS PAINOS
6 7 8 9 1 0 2 0 I/I>
4 5
t/s
7 0
6 0
5 0
4 0
3 0
2 0
1 0
9
8
7
6
5
4
3
2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
k
1.0
0.2
0.8
0.6
0.4
0.1
0.09
0.3
0.08
0.07
0.2
0.06
0.05
0.1
0.04
0.05
0.03
0.02
1 2
3
b) Very inverse
1.0
0.8
0.7
0.6
0.5
0.4
4 6 7 8 9 1 0
5 2 0 I/I>
k
0.9
0.3
0.2
0.1
0.05