Siemens 7SR11

7SR11 & 7SR12 Description Of Operation
©2012 Siemens Protection Devices Limited Chapter 1 Page 12 of 76
Figure 1-6 Functional Diagram of 7SR1204-2_A12-_CA0 Relay
7SR1204-4_A12-_CA0
VL1
VL2
VL3
37
(x2)
I1
67/50
SEF
(x4)
67/51
SEF
(x4)
27
59
(x4)
27
59
(x4)
27
59
(x4)
59N
(x2)
74
CCS
(x3)
74
TCS
(x3)
64H
86
81
(x4)
Figure 1-7 Functional Diagram of 7SR1204-4_A12-_CA0 Relay