Siemens 7SR105 Rho - Symbols and Nomenclature

7SR105 Rho Description of Operation
©2018 Siemens Protection Devices Chapter 1 Page 8 of 57
1.5 Functional Diagram
M
3
1
50
BCL
50
(x2)
48/
66
46Ph
Rev
37
( x
2
)
49
14
(x4)
51
(x
2)
50
BF
50N
51N
46NPS
50G
51
G
50 G
BF
86
74 T/
CCS
7SR105
81B
TEMP
Figure 1-1 Functional Diagram of 7SR105 Rho Motor Protection Relay