Siemens SIPROTEC 7SJ62 Instruction Manual page 444

Technical Data
100
t [s]
30
20
10
7
5
3
2
1
0.7
0.5
0.3
0.2
0.1
0.07
0.05
1 2 3


t
ANSI INVERSE: = -------------------------------------------------- -

( ⁄

I 2 I 2p
100
t [s]
50
20
10
5
3
2
1
0.5
0.3
0.2
0.1
0.05
1 2 3
ANSI VERY INVERSE: t =
Figure 10-5 Trip Time Characteristic Curves Of The Inverse-time Negative Sequence Element, 46-TOC, per ANSI
10-26
D [s]
I2p
15
10
5
2
1
0.5
5 10 20
I /I
2 2p

8.9341

⋅
0.17966
+ D I2p

2.0938
)

– 1
D [s]
I2p
15
10
5
2
1
0.5
5 10 20
I /I
2 2p
 
 3.922 
⋅
[s]
0.0982
----------------------------------- - + D I2p
 
2
( ⁄ )
 
I I – 1
2 2p
100
t [s]
30
20
10
7
5
3
2
1
0.7
0.5
0.3
0.2
0.1
0.07
0.05
1 2
[s]
ANSI MODERATELY INV.:
100
t [s]
50
20
10
5
3
2
1
0.5
0.3
0.2
0.1
0.05
1 2
ANSI EXTREMELY INV.:
D
I2p
15
10
5
2
1
0.5
3 5 10 20
I /I
2 2p

 0.0103
0.0228
t = -------------------------------------------- - +

0.02
( ⁄ )

I I – 1
2 2p
D
I2p
15
10
5
2
0.5 1
3 5 10 20
I /I
2 2p
 
5.64
 
0.02434
t
= ----------------------------------- - +
 
2
( ⁄ )
 
I 2 I 2p – 1
7SJ62 Manual
C53000-G1140-C121-1
[s]


⋅
D I2p [s]


[s]
⋅
D [s]
I2p