Figure 1.5-3 Functional Diagram Of 7Sr22 Relay - Siemens Argus 7SR21 Technical Manual
Overcurrent relay
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- Manual (71 pages) ,
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- Manual (15 pages)
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I
L1
(I
)
A
I
L2
(I
)
B
I
L3
(I
)
C
I
4
(I
)
G
I
5
(I
)
SEF
V
L1
(V
)
A
V
L2
(V
)
B
V
L3
(V
)
C
V
4
(V
)
X
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60
37
50
49
CTS-
(x2)
BF
I
60
37
50
49
CTS-
(x2)
BF
I
60
37
50
49
CTS-
(x2)
BF
I
46
46
60
NPS
BC
CTS
(x2)
50
37
BF
50
37
BF
NOTE: The use of some
functions are mutually exclusive
27
59
(x4)
27
47
81
59
(x2)
(x6)
(x4)
27
59
(x4)
27
59
Figure 1.5-3
Functional Diagram of 7SR22 Relay
7SR210 & 7SR220 Description of Operation
7SR22
67/
50
21
51V
50/51
51c
AFD
LB
(x4)
67/
50
21
51V
50/51
51c
AFD
LB
(x4)
67/
50
21
51V
50/51
51c
AFD
LB
(x4)
67/
60
50/51N
51c
VTS
(x4)
67/
37G
50/51G
(x2)
(x4)
67/
64
37S
50/51S
H
(x2)
(x4)
32
32S
55
74
TCS
59N
(x2)
Optional
79
25
81
HBL
2/5
81
HBL
2/5
81
HBL
2/5
81
HBL
2/5N
21FL
Page 13 of 94
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