Overcurrent Guard Relay - Siemens 7PG21 Solkor Rf Technical Manual

3.4 Overcurrent Guard Relay

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