Siemens siprotec 7SA6 - Page 782

Appendix
A-58 7SA6 Manual
C53000-G1176-C156-2
Figure A-39 Current connections to three current transformers and earth current from the star-point connection of an
earthed power transformer (for directional-controlled earth fault protection)
Housing Size
2
/
3
Line
L1
L2
L3
Transformer
Flush Mounted/Cubicle
I
4
I
L1
I
L2
I
L3
Q1
Q3
Q5
Q2
Q4
Q6
Q7Q8
7SA6
S1 S2
P1 P2
S2
S1
P2
P1