Siemens SIPROTEC 7SJ62 - Page 443

Technical Data
10-257SJ62 Manual
C53000-G1140-C121-1
Figure 10-4 Trip Time Characteristic Curves Of The Inverse-time Negative Sequence Element 46-TOC, per IEC 60255–3
0.1
0.2
0.4
1.6
3.2
0.05
IEC EXTREMELY INVERSE:
1
0.3
0.1
1 2 3 5 10 20
100
20
10
5
2
0.5
0.2
0.05
IEC NORMAL INVERSE:
IEC VERY INVERSE:
T
I 2p
t [s]
t [s]
I
2
/ I
2p
1
0.3
0.1
1 2 3 5 10 20
100
20
10
5
2
0.5
0.2
0.05
[s]
[s]
1 2 3
5
10 20
0.3
0.1
100
20
10
2
0.05
5
[s]
0.2
0.5
1
t [s]
3
3
30
30
3
0.8
0.1
0.2
0.4
1.6
3.2
0.05
0.8
7
0.1
0.2
0.4
1.6
3.2
0.8
0.05
t = Trip time in seconds
T
I2p
= Setting value of the time multiplier
I
2
= Negative Sequence Current
I
2p
= Setting value of the pickup current
t
0.14
I
2
I
2p
⁄()
0.02
1
–
---------------------------------------------
T
I2p
⋅
=
t
13.5
I
2
I
2p
⁄()
1
1
–
------------------------------------
T
I2p
⋅
=
I
2
/ I
2p
T
I 2p
I
2
/ I
2p
T
I 2p
t
80
I
2
I
2p
⁄()
2
1
–
------------------------------------
T
I2p
⋅
=
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