Siemens siprotec 7SA522 - Page 564

Appendix
A-16 7SA522 Manual
C53000-G1176-C119-2
Figure 1-11 Current connections to three current transformers but earth current (residual ,

neutral current) from the
star-point connection of a parallel line (for parallel line compensation)
Housing size
1
/
2
Line 2
L1
L2
L3
Line 1
k
l
Panel surface mounted
Flush mounted/cubicle
I
4
I
L1
I
L2
I
L3
Q1
Q3
Q5
Q2
Q4
Q6
Q8Q7
25
24
23
22
50
49
48
47
7SA522
k
l
Panel surface mounted
Flush mounted/cubicle
I
4
I
L1
I
L2
I
L3
Q1
Q3
Q5
Q2
Q4
Q6
Q8Q7
25
24
23
22
50
49
48
47
7SA522
Housing size
1
/
1
Line 2
L1
L2
L3
Line 1
k
l
Panel surface mounted
Flush mounted/cubicle
I
4
I
L1
I
L2
I
L3
Q1
Q3
Q5
Q2
Q4
Q6
Q8Q7
50
49
48
47
100
99
98
97
7SA522
k
l
Panel surface mounted
Flush mounted/cubicle
I
4
I
L1
I
L2
I
L3
Q1
Q3
Q5
Q2
Q4
Q6
Q8Q7
50
49
48
47
100
99
98
97
7SA522