Siemens SIPROTEC 7SJ62 - Page 472

Appendix
A-12 7SJ62 Manual
C53000-G1140-C121-1
Figure A-8 Current connections to three current transformers and a core balance neutral
current transformer for ground current - preferred for effectively or low-resistance
grounded networks
Figure A-9 Current connections to two current transformers and core balance neutral current
transformer for sensitive ground fault detection - only for ungrounded or compen-
sated networks
Panel Surface Mounted
Flush-mounted/Cubicle
A B C
Q1
Q3
Q5
Q2
Q4
Q6
Q7Q8
Important! Cable shield grounding must be done on the cable side!
Note: Change of Address 0201 setting changes polarity of 3I
0
Current
Input !
15
14
13
27
30
29
28
12
7SJ62
3I
0
Ia
Ib
Ic
Panel Surface Mounted
Flush-mounted/Cubicle
A B C
Q1
Q3
Q5
Q2
Q4
Q6
Q7Q8
Important! Cable shield grounding must be done on the cable side!
Note: Change of Address 0201 setting changes polarity of I
NS
Current
Input !
15
14
13
27
30
29
28
12
7SJ62
I
NS
Ia
Ib
Ic
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