Figure 1.4-4 Functional Diagram Of 7Sr18 Directional Three-Phase And Earth - Siemens 7SR18 Solkor Manual

37 (x2)
IL1
37 (x2)
IL2
37 (x2)
IL3
37G (x2)
I4
VL1
VL2
VL3

Figure 1.4-4 Functional Diagram of 7SR18 Directional Three-Phase and Earth

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50
49
BF
50
49
BF
50
49
BF
46
46
NPS
BC
(x2)
50 BF 81HBL2
67/ 67/
51V 50 51
Diff (x2)
(x4) (x4)
67/ 67/
51V
50 51
Diff (x2)
(x4) (x4)
67/ 67/
51V
50 51
Diff (x2)
(x4) (x4)
67/ 67/
60
50N 51N
VTS
(x4) (x4)
67/ 67/
50G 51G
(x4) (x4)
Ordering Options
79
7SR18 Description Of Operation
87L
81HBL2 51c (x4)
87L
81HBL2 51c (x4)
87L
81HBL2
51c (x4)
60
CTS
NOTE: The use of
some functions are
mutually exclusive
Page 13 of 78
86
74TCS
(x3)
74CCS
(x3)