Siemens siprotec 7SA6 User Manual

Technical Data
10-24 7SA6 Manual
C53000-G1176-C156
Figure 10-2 Trip time characteristics of inverse time overcurrent protection, acc. ANSI/IEEE, (phases and earth)
LONG INVERSE
MODERATELY INVERSE
D[s]
I / I
p
I / I
p
1
2
5
10
15
0.5
D[s]
1
2
5
10
15
0.5
1
0.3
0.1
1 2 3 5 10 20
100
20
10
0.5
0.2
0.05
t
8.9341
II
p
⁄()
2.0938
1–
-------------------------------------- 0.17966+
èø
ç÷
æö
D⋅=
t
0.2663
II
p
⁄()
1.2969
1–
-------------------------------------- 0.03393+
èø
ç÷
æö
D⋅=
1
0.3
0.1
1 2 3 5 10 20
100
20
10
5
2
0.5
0.2
0.05
INVERSE
SHORT INVERSE
D[s]
t[s]
t[s]
I / I
p
I / I
p
1
2
5
10
15
0.5
D[s]
1
2
5
10
15
0.5
1
0.3
0.1
12351020
100
20
10
5
2
0.5
0.2
0.05
t
0.0103
II
p
⁄()
0.02
1–
--------------------------------- 0.0228+
èø
ç÷
æö
D⋅=
[s]
[s]
[s]
1 2 3 5 10 20
0.3
0.1
100
20
10
2
0.05
5
3
5
[s]
t
5.6143
II
p
⁄()1–
------------------------- 2.18592+
èø
æö
D⋅=
0.2
0.5
1
t[s]t[s]
2
3
50
50
0.07
0.7
3
7
30
30
7
3
0.7
0.07

Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English