Siemens SIPROTEC 7SJ62 Instruction Manual page 443

100
t [s]
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
0.05
1 2 3
IEC NORMAL INVERSE:
t
100
t [s]
20
10
5
3
2
1
0.5
0.3
0.2
0.1
0.05
1 2 3
IEC EXTREMELY INVERSE:
Figure 10-4 Trip Time Characteristic Curves Of The Inverse-time Negative Sequence Element 46-TOC, per IEC 60255–3
7SJ62 Manual
C53000-G1140-C121-1
T
I2p
3.2
1.6
0.8
0.4
0.2
0.1
0.05
5 7 10 20
/I
I
2 2p
0.14
⋅
= -------------------------------------------- - T
[s]
I2p
0.02
( ⁄ )
1
I I –
2 2p
T
I2p
3.2
1.6
0.8
0.4
0.05 0.1 0.2
5
10 20
/I
I
2 2p
80
⋅
t = ----------------------------------- - T
[s]
I2p
2
( ⁄ )
1
I I –
2 2p
100
t [s]
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
0.05
1 2 3
IEC VERY INVERSE:
t =
t = Trip time in seconds
T
= Setting value of the time multiplier
I2p
= Negative Sequence Current
I
2
= Setting value of the pickup current
I
2p
Technical Data
T
I2p
3.2
1.6
0.8
0.4
0.2
0.1
0.05
5 10 20
/I
I
2 2p
13.5
⋅
----------------------------------- - T [s]
I2p
1
( ⁄ )
1
I 2 I 2p –
10-25