Siemens Argus 7SR21 - Figure 1.5-3 Functional Diagram of 7 SR22 Relay

7SR210 & 7SR220 Description of Operation
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7SR22
46
BC
46
NPS
(x2)
37
(x2)
49
50
BF
V
L1
(V
A
)
V
L2
(V
B
)
V
L3
(V
C
)
V
4
(V
X
)
I
L1
(I
A
)
81
HBL
2/5
37
(x2)
49
50
BF
I
L2
(I
B
)
81
HBL
2/5
37
(x2)
49
50
BF
I
L3
(I
C
)
81
HBL
2/5
60
CTS
I
4
(I
G
)
I
5
(I
SEF
)
74
TCS
NOTE: The use of some
functions are mutually exclusive
67/
50/51
(x4)
67/
50/51N
(x4)
67/
50/51
(x4)
67/
50/51
(x4)
67/
50/51G
(x4)
67/
50/51S
(x4)
64
H
27
59
27
59
(x4)
27
59
(x4)
27
59
(x4)
47
(x2)
81
(x6)
79
Optional
59N
(x2)
81
HBL
2/5N
37G
(x2)
37S
(x2)
51c
60
CTS-
I
60
CTS-
I
60
CTS-
I
37
50
BF
37
50
BF
25
50
AFD
50
AFD
50
AFD
51c
51c
51c
32S32
55
21
LB
21
LB
21
LB
51V
21FL
60
VTS
51V
51V
Figure 1.5-3 Functional Diagram of 7SR22 Relay