Technical Data
10-16
7SA522 Manual
C53000-G1176-C119-2
Figure 10-1
Trip time characteristics of inverse time overcurrent protection, acc. IEC (phases and earth)
0.1
0.2
0.4
1.6
3.2
0.05
Extremely inverse:
(Type C)
I
/
I
p
1
0.3
0.1
1
2
3
5
10
20
100
20
10
5
2
0.5
0.2
0.05
Normal inverse:
Very inverse:
(Type B)
T
p
t [s]
t [s]
I
/
I
p
I
/
I
p
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
t
0.14
I I
p
⁄
(
)
0.02
1
–
---------------------------------
T
p
⋅
=
(Type A)
t
13.5
I I
p
⁄
(
)
1
1
–
---------------------------
T
p
⋅
=
t
80
I I
p
⁄
(
)
2
1
–
----------------------------
T
p
⋅
=
0.8
0.1
0.2
0.4
1.6
3.2
0,05
0.8
7
T
p
0.1 0.2
0.4
1.6
3.2
0.8
T
p
0.05
t
Trip time
T
p
Setting value time multiplier
I
Fault current
I
p
Setting value current
Note:
For earth fault read 3
I
0p
in-
stead of
I
p
and T
3I0p
instead of T
p
0.1
0.2
0.4
3.2
0.05
10
3
1
1
2
3
5
10
20
1000
200
100
50
20
5
2
0.5
Longtime inverse:
T
p
t [s]
I
/
I
p
[s]
30
300
0.8
7
t
120
I I
p
⁄
(
)
1
1
–
----------------------------
T
p
⋅
=
1.6
Summary of Contents for siprotec 7SA522
Page 20: ...7SA522 Manual C53000 G1176 C119 2 ...
Page 64: ...7SA522 Manual C53000 G1176 C119 2 ...
Page 89: ...SIPROTEC 4 Devices 4 25 7SA522 Manual C53000 G1176 C119 2 Figure 4 20 CFC Logic example ...
Page 408: ...7SA522 Manual C53000 G1176 C119 2 ...
Page 456: ...7SA522 Manual C53000 G1176 C119 2 ...
Page 516: ...7SA522 Manual C53000 G1176 C119 2 ...
Page 620: ...Appendix B 48 ...
