Figure 1-2 Functional Diagram: 7Sr242N-2Aann-0Ba0 Relay - Siemens 7SR242 Manual
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W1-I
(I
)
L1
A
W1-I
(I
)
L2
B
W1-I
(I
)
L3
C
I
G1
I
G2
W2-I
(I
)
L3
C
W2-I
(I
)
L2
B
W2-I
(I
)
L1
A
Figure 1-2
©2010 Siemens Protection Devices Limited
37
50
50
51
(x2)
BF-1
(x2)
(x2)
37
50
50
51
(x2)
BF-1
(x2)
(x2)
37
50
50
51
(x2)
BF-1
(x2)
(x2)
50N
51N
(x2)
(x2)
50
37G
50G
51G
BF-1
(x2)
(x2)
(x4)
I4
Each function element
can be assigned to W1
or W2 CT inputs.
NOTE: The use of some
functions are mutually
exclusive
50
37G
BF-2
50G
51G
I4
50N
51N
50
37
50
51
BF-2
50
37
50
51
BF-2
50
37
50
51
BF-2
Functional Diagram: 7SR242n-2aAnn-0BA0 Relay
7SR242 Duobias Description Of Operation
7SR242n-2aAnn-0BA0
81
81
49
HBL2
HBL5
81
81
49
HBL2
HBL5
81
81
49
HBL2
HBL5
46
46
BC
NPS
(x2)
(x4)
64H
87HS
87BD
64H
74
CCS
(x6)
46
46
74
BC
NPS
TCS
(x6)
81
81
49
HBL2
HBL5
81
81
49
HBL
HBL5
2
81
81
49
HBL
HBL5
2
Chapter 1 Page 10 of 52
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