Siemens siprotec 7SA6 User Manual

Appendix
A-557SA6 Manual
C53000-G1176-C156-2
Figure A-35 Current connections to two current transformers with separate earth current
transformer (summation current transformer or cable core balance current
tranformer) — not permitted for earthed systems
Figure A-36 Current connections to three transformers with a starpoint connection to the current transformer set
of the corresponding parallel line (for parallel line compensation)
Important! Cable shield grounding must be done on the cable side!
Note: Change of Address 0201 setting changes polarity of 3I
0
Current
Input, i.e. terminal Q7 must be connected to that CT terminal
pointing in the same direction as the starpoint of the phase current
CTs (towards “Line side” in this diagram)
Flush Mounted/Cubicle
L1 L2 L3
Q1
Q3
Q5
Q2
Q4
Q6
Q7Q8
7SA6
Housing Size
2
/
3
I
4
I
L1
I
L2
I
L3
S2
S1
P2
P1
S2
S1
P2
P1
Housing Size
1
/
3
Line 2
L1
L2
L3
Line 1
Panel Surface Mounted
Flush Mounted/Cubicle
I
4
I
L1
I
L2
I
L3
Q1
Q3
Q5
Q2
Q4
Q6
Q7 Q8
15
14
13
27
30
29
28
12
7SA6
Panel Surface Mounted
Flush Mounted/Cubicle
I
4
I
L1
I
L2
I
L3
Q1
Q3
Q5
Q2
Q4
Q6
Q7 Q8
15
14
13
27
30
29
28
12
7SA6
S2
S1
P2
P1
S2
S1
P2
P1

Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English