Siemens siprotec 7SA6 - Connection Examples; A.3 Connection Examples

Appendix
A-34 7SA6 Manual
C53000-G1176-C133-1
A.3 Connection Examples
Current
Transformer
Connection
Examples
Figure A-20 Current connections to three current transformers with a star-point connection
for earth current (residual ,

neutral current), normal circuit layout —
appropriate 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
15
14
13
12
30
29
28
27
7SA6
Housing size
1
/
3
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) 25
(49) 24
(48) 23
(47) 22
50 (100)
49 (99)
48 (98)
47 (97)
7SA6
Housing size
1
/
2
(figures in brackets relating to size
1
/
1
)