Siemens siprotec 7SA522 - Page 568

Appendix
A-20 7SA522 Manual
C53000-G1176-C119-2
Figure 1-15 Voltage connections to three Wye-connected voltage transformers and addition-
ally to a bus-bar voltage (for synchronism check* or overvoltage protection)
* next firmware release
Housing size
1
/
2
Panel surface mounted
Flush mounted/cubicle
L1
L2
L3
R15
R17
R18
U
L1
U
L2
20
19
44
U
L3
7SA522
R16 45
R13
U
4
21
R14 46
Housing size
1
/
1
Panel surface mounted
Flush mounted/cubicle
L1
L2
L3
R15
R17
R18
U
L1
U
L2
45
44
94
U
L3
7SA522
R16 95
R13
U
4
46
R14 96