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

Appendix
A.3

Connection Examples

Current
Transformer
Connection
Examples
A-34
L1 L2
L1 L2
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
15 Q1
14 Q3
13 Q5
k
l
12 Q7
7SA6
L3
Panel surface mounted
(50) 25 Q1
(49) 24 Q3
(48) 23 Q5
k
l
(47) 22 Q7
7SA6
1
L3 Housing size
Flush mounted/cubicle
I
L1
Q2
I
L2
Q4
I
L3
Q6
I
4
Q8
1
Housing size /
3
Flush mounted/cubicle
I
L1
Q2
I
L2
Q4
I
L3
Q6
I
4
Q8
/ (figures in brackets relating to size
2
C53000-G1176-C133-1
30
29
28
27
50 (100)
49 (99)
48 (98)
47 (97)
1
/ )
1
7SA6 Manual