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Connection Diagram
A
B
C
53
54
55
56
49
A
B
C
50
51
52
45
46
See note 5
47
48
25
26
27
28
Fig 3. Connection Diagram for 7SG11 Overcurrent Relay
Siemens Protection Devices Limited
1A
53
54
5A
55
56
1A
49
50
5A
51
52
See note 1
1A
45
46
5A
47
48
1A
25
26
5A
27
28
+ve
3
-ve
4
Va
81
Vb
Vc
82
83
See note 2
Dn
79
Da
80
7SG11
Argus
1A
A
5A
1A
B
5A
1A
A
B
C
C
5A
Phase-phase connection
- see note 6
1A
E/F
5A
+ve
13
-ve
14
A
Earth
15
Case
earth
7
BO 1
5
B
6
8
BO 2
10
9
C
16
BO 3
18
17
11
BO 4
E/F
12
19
BO 5
20
21
BI 1
BO 6
22
23
BO 7
24
EXPANSION PCB
+ve
35
BI 2
-ve
36
+ve
33
BI 3
-ve
34
31
BI 4
-ve
32
+ve
29
BI 5
-ve
30
37
BO 8
38
40
BO 9
41
41
BO 10
42
43
BO 11
44
See note 3
Va
83
84
Vb
81
82
Vc
Dn
79
Da
80
Notes
1) Diagram shows 3PF + SEF model using a
ring core CT. See diagram below for
alternative connection. Other CT mixes also
available.
2) Voltage card fitted only on 7SG112n and
7SG1164 relays. Diagram shows 3 phase and
earth voltage inputs. See diagram below for
alternative voltage input.
3) Optional expansion card, fitted only on
models with 5 binary inputs and 11 output
relays.
4) Optional expansion card, fitted only on
models with 9 binary inputs and 7 output
relays.
5) Diagram shows 3PF + EF model using the
Holmgreen connection. Other CT mixes also
available.
6) Voltage card shown can be fitted only on
7SG1125 relays.
EXPANSION PCB
+ve
35
BI 2
-ve
36
+ve
33
BI 3
-ve
34
31
BI 4
-ve
32
+ve
29
BI 5
-ve
30
+ve
43
BI 6
-ve
44
41
BI 7
-ve
42
+ve
39
BI 8
-ve
40
+ve
37
BI 9
-ve
38
See note 4
Va
83
84
Vb
81
82
79
Vc
A
B
C
80
Phase-earth
connection
- see note 6
9
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- Inputs and Outputs
- Technical Data
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