Siemens 7PG21 Solkor Rf - Overcurrent Guard Relay

7PG21 Solkor Rf Applications Guide
3.4 Overcurrent Guard Relay
Argus 1 or B69, 3P Overcurrent, or 2P Overcurrent + 1P Earth Fault relay
Existing
Solkor R
Solkor R/Rf
in R mode
5kV Pilots
Installation with Existing Solkor R relay.
E6
Solkor Rf
5kV Pilots
Standard 5kV Plain Solkor Rf.
Solkor Rf
E6 E6
Solkor Rf
15kV Pilots
Standard 15kV Plain Solkor Rf.
Solkor Rf
F2
S2
T2
T1
F2
S2
T2
T1
15kV Isolation
Transformer
15kV Isolation
Transformer
E6E6
BOPBOP
E6
E2
AC Supply
Supervision
Solkor Rf
5kV Pilots
5kV Solkor Rf with Pilot Supervision.
Solkor Rf
B75
B74
5kV
Pilot Supervision
Send End
5kV
Pilot Supervision
Receive End
B22
E6
E4
E4
E6
©2010 Siemens Protection Devices Limited Chapter 3 Page 6 of 15