Siemens 7SR242 - Figure 1-3 Functional Diagram: 7 Sr242 N-2 Aann-0 CA0 Relay

7SR242 Duobias Description Of Operation
©2010 Siemens Protection Devices Limited Chapter 1 Page 11 of 52
IG1
50G
(x2)
51G
(x4)
64H
W1-IL1 (IA) 81
HBL5
81
HBL5
81
HBL5
V1 (VX)
74
TCS
(x6)
59N
(x2)
27
59
(x4)
81
(x6)
IG2
W1-IL2 (IB)
W1-I
L3 (IC)
W2-I
L3 (IC)
W2-I
L2 (IB)
W2-I
L1 (IA)
7SR242n-2aAnn-0CA0
81
HBL2
81
HBL2
81
HBL2
87HS
87BD
ICT
ICT
37
(x2)
49
50
(x2)
51
(x2)
50
BF-1
37
(x2)
49
50
(x2)
51
(x2)
50
BF-1
37
(x2)
49
50
(x2)
51
(x2)
50
BF-1
50N
(x2)
51N
(x2)
46
BC
(x2)
37 49
37 49
37 49
50N
50
BF-2
50
BF-2
50
BF-2
46
NPS
51N
51
51
51
50
50
50
50G 51G 64H
81
HBL2
81
HBL
2
81
HBL
2
81
HBL5
81
HBL5
81
HBL5
Each function element
can be assigned to W1
or W2 CT inputs.
NOTE: The use of some
functions are mutually
exclusive
24
(x3)
37G
(x2)
50
BF-1
I4
37G
50
BF-2
I4
74
CCS
(x6)
46
BC
46
NPS
(x4)
Figure 1-3 Functional Diagram: 7SR242n-2aAnn-0CA0 Relay