Siemens siprotec 7SA522 User Manual

Appendix
A-14 7SA522 Manual
C53000-G1176-C119-2
1.3 Connection Examples
Current Trans-
former Examples
Figure 1-9 Current connections to three current transformers with a star-point connection
for earth current (residual ,

neutral current), normal circuit layout — appropri-
ate for all networks
Panel surface mounted
Flush mounted/cubicle
L1 L2 L3
k
l
I
4
I
L1
I
L2
I
L3
Q1
Q3
Q5
Q2
Q4
Q6
Q7
Q8
50
49
48
47
100
99
98
97
7SA522
Panel surface mounted
Flush mounted/cubicle
L1 L2 L3
k
l
I
4
I
L1
I
L2
I
L3
Q1
Q3
Q5
Q2
Q4
Q6
Q7
Q8
25
24
23
22
50
49
48
47
7SA522
Housing size
1
/
2
Housing size
1
/
1

Siemens siprotec 7SA522 Specifications

General

Brand	Siemens
Model	siprotec 7SA522
Category	Protection Device
Language	English