Siemens 7SR12 Argus - 2.2 Case

7SR11 & 7SR12 Description Of Operation
©2017 Siemens Protection Devices Limited Chapter 1 Page 15 of 88
7SR1204-2_A12-_CA0
VL1
VL2
VL3
37
(x2)
I1
67/
50G
(x4)
67/
51G
(x4)
27
59
(x4)
27
59
(x4)
27
59
(x4)
59N
(x2)
74
CCS
(x3)
74
TCS
(x3)
64H
86
81
(x4)
81H
BL2
Figure 1-6 Functional Diagram of 7SR1204-2_A12-_CA0 Relay
7SR1204-4_A12-_CA0
VL1
VL2
VL3
37
(x2)
I1
67/50
SEF
(x4)
67/51
SEF
(x4)
27
59
(x4)
27
59
(x4)
27
59
(x4)
59N
(x2)
74
CCS
(x3)
74
TCS
(x3)
64H
86
81
(x4)
Figure 1-7 Functional Diagram of 7SR1204-4_A12-_CA0 Relay
7SR1205-2_A12-_DA0
46
BC
46
NPS
(x2)
37
(x2)
49
50
BF
VL1
VL2
VL3
IL1
37
(x2)
49
50
BF
IL2
37
(x2)
49
50
BF
IL3
60
CTS
60
VTS
I4
NOTE:
The use of some functions
are mutually exclusive
67/
50
(x4)
67/
51
(x4)
67/
50N
(x4)
67/
50
(x4)
67/
50
(x4)
67/
51
(x4)
67/
51
(x4)
67/
51N
(x4)
67/
50G
(x4)
67/
51G
(x4)
27
59
(x4)
27
59
(x4)
27
59
(x4)
59N
(x2)
50
BF
47
51V
51V
51V
79
74
CCS
(x3)
74
TCS
(x3)
64H
51c
86
81H
BL2
81H
BL2
37
81
(x4)
50
AFD
(x2)
50
AFD
(x2)
50
AFD
(x2)
32
(x2)
32
(x2)
32
(x2)
55
(x2)
55
(x2)
55
(x2)
Figure 1-8 Functional Diagram of 7SR1205-2_A_ _-_DA0 Relay