Siemens 7SR242 - Figure 1-1 Functional Diagram: 7 Sr242 N-2 Aann-0 AA0 Relay

7SR242 Duobias Description Of Operation
©2010 Siemens Protection Devices Limited Chapter 1 Page 9 of 52
50
BF-1
50
BF-1
50
BF-1
I
G1
50
BF-2
50
BF-2
50
BF-2
64H
W1-I
L1
(I
A
)
64H
81
HBL
5
81
HBL
5
81
HBL
5
74
TCS
(x6)
I
G2
W1-I
L2
(I
B
)
W1-I
L3
(I
C
)
W2-I
L3
(I
C
)
W2-I
L2
(I
B
)
W2-I
L1
(I
A
)
81
HBL
2
81
HBL
2
81
HBL
2
81
HBL
2
81
HBL
2
81
HBL
2
81
HBL
5
81
HBL
5
81
HBL
5
87HS 87BD
ICT
ICT
7SR242n-2aAnn-0AA0
50
BF-1
I4
50
BF-2
I4
74
CCS
(x6)
Figure 1-1 Functional Diagram: 7SR242n-2aAnn-0AA0 Relay