Siemens 7SR242 - Figure 1-4 Connection Diagram: 7 SR242 Relay

7SR242 Duobias Description Of Operation
©2010 Siemens Protection Devices Limited Chapter 1 Page 12 of 52
BO 1
GND.
BI 1
+ve
-ve
+ve
-ve
22
24
28
2
4
BI 2
+ve
-ve
6
8
BI 3
+ve
-ve
10
12
BO 2
BO 3
BO 4
BO 5
7SR242
BI 10
+ve
-ve
2
4
BI 11
+ve
-ve
6
8
BI 12
+ve
10
BO 7
BO 8
BO 9
BI 13
+ve
12
BI 14
+ve
14
BI 15
+ve
-ve
16
18
BI 16
20
BI 17
+ve
22
BI 18
+ve
24
BI 19
+ve
-ve
26
28
+ve
BO 10
BO 11
BO 12
BO 13
BO 14
A
CT/VT
B
CT
D
Optional
I/O
1 2
27 28
1 21 2
27 2827 28
Data
Comms
(Optional)
C
D
A
Screen
B
Term.
14
16
18
20
13
14
15
16
1A
5A
1
2
3
4
1A
5A
5
6
7
8
1A
5A
9
10
11
12
1A
5A
A
IG1
V1 (VX)
27
28
17
18
19
20
5A
BI 4
+ve
18
BI 5
+ve
22
BI 6
+ve
-ve
26
28
1A
5A
1
2
3
4
1A
5A
5
6
7
8
1A
5A
9
10
11
12
B
-ve
20
-ve
24
BI 7
+ve
17
BI 8
+ve
21
BI 9
+ve
-ve
25
27
-ve
19
-ve
23
C
PSU
1 2
27 28
W1-IL1 (IA)
W1-I
L2 (IB)
W1-I
L3 (IC)
W2-I
L3 (IC)
W2-IL2 (IB)
W2-I
L1 (IA)
IG2
BO 6
Rear View
Arrangement of terminals and modules
NOTES
Shows contacts internal to relay case
assembly.
Contacts close when the relay chassis is
withdrawn from case
BI = Binary Input
BO = Binary Output
21
19
17
23
25
27
3
1
7
5
11
9
15
13
9
5
7
27
3
1
15
11
13
19
17
23
21
25
26
Figure 1-4 Connection Diagram: 7SR242 Relay