Figure 1-6 Functional Diagram Of 7Sr1204-2_A12-_Ca0 Relay; Figure 1-7 Functional Diagram Of 7Sr1204-4_A12-_Ca0 Relay; Figure 1-8 Functional Diagram Of 7Sr1205-2_A - Siemens 7SR12 Argus Manual

Figure 1-6 Functional Diagram of 7SR1204-2_A12-_CA0 Relay

Figure 1-7 Functional Diagram of 7SR1204-4_A12-_CA0 Relay

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