7SR21 & 7SR22 Argus Installation Guide
©2010 Siemens Protection Devices Limited
Chapter 5 Page 13 of 22
5.2
Wiring Diagram: 7SR22 Directional OC/EF Relay
7SR22
BO 1
GND.
BI 1
+ve
+ve
-ve
-ve
I
L1
(I
A
)
3
1
22
24
28
2
4
BI 2
-ve
+ve
6
8
BI 3
-ve
+ve
10
12
1
2
5
6
9
10
13
14
BO 2
9
5
7
BO 3
15
11
13
BO 4
19
17
BO 5
23
21
BO 6
A
17
18
19
20
V
L1
(V
A
)
21
22
V
L2
(V
B
)
23
24
V
L3
(V
C
)
25
26
V
4
(V
X
)
27
28
BI 4
-ve
+ve
2
4
BI 5
-ve
+ve
6
8
BI 6
+ve
10
BO 7
3
1
BO 8
7
5
BO 9
11
9
BI 7
+ve
12
BI 8
+ve
14
BI 9
-ve
+ve
16
18
BI 10
20
BI 11
+ve
22
BI 12
+ve
24
BI 13
-ve
+ve
26
28
+ve
BO 10
15
13
21
19
17
BO 11
BO 12
27
25
23
BO 13
BO 14
1A
5A
1A
5A
I
L2
(I
B
)
1A
5A
I
L3
(I
C
)
1A
5A
I
4
(I
G
)
15
16
11
12
1A
5A
I
5
(I
SEF
)
3
4
7
8
A
Analogue
B
PSU
C
Optional
I/O
1
2
27
28
1
2
1
2
27
28
27
28
Data
Comms
(Optional)
Rear View
Arrangement of terminals and modules
B
C
A
Screen
B
Term.
14
16
18
20
25
26
27
Shows contacts internal to relay case
assembly.
Contacts close when the relay chassis is
withdrawn from case
NOTES
BI =
Binary Input
BO =
Binary Output
Figure 5.2-1 Connection Diagram for 7SR22 Relay
