Siemens SIPROTEC easy 7SJ45 - Trip and Reset Timing Characteristics

Manual 7SJ45 Technical Data
C53000-K1174-C001-7 71
Figure 2-10 Reset time characteristic as per IEC Type A
(normal inverse, N INV)
Figure 2-11 Trip characteristic as per IEC Type A
(normal inverse, N INV)
Normal inverse /
(Type A)
0.05 0.1 0.2 0.3 0.5
0.9
0.05
0.1
0.2
0.3
0.5
1
2
3
5
10
20
100
500
0.05
0.10
0.20
0.40
0.80
1.60
3.20
↑
↑↑
↑
T
p
[s]
I/Ip
t[s]
t
9.7
1II
P
⁄()–
2
-----------------------------
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ç÷
ç÷
æö
T
P
s[]⋅=
Normal inverse /
(Type A)
2 3 5 10 20
0.05
0.10
0.20
0.40
0.80
1.60
3.20
↑
↑↑
↑
←
←←
←
T
p
[s]
I/Ip
1.1
100
0.05
0.1
0.2
0.3
0.5
1
2
3
5
10
20
t[s]
t
0.14
II
P
⁄()
0.02
1–
--------------------------------------
èø
ç÷
ç÷
æö
T
P
s[]⋅=