Schweitzer Engineering Laboratories SEL-421-4 - Figure 6.54 Protection Freeform SEL OGIC Control Equations

6.181
Date Code 20171021 Instruction Manual SEL-421 Relay
Protection Applications Examples
230 kV Tapped Transmission Line Application Example
Figure 6.54 Protection Freeform SELOGIC Control Equations
>=
V1M
119,500.00
PSV01
<
V1M
26,500.00
PSV02
IN
R
PT
Q
ET
PST01
AND
OR
IN101
PSV02
IN103
IN102
IN101
PSV02
150
IN103
PST01Q
IN102
IN
R
PT
Q
ET
PST02
AND
PSV02
IN103
PLT01
780
IN
R
PV
Q
CV
PCN01
OUT103
IN103
2
IN
R
PV
Q
CV
PCN02
OUT106
IN103
2
IN
R
PT
Q
ET
PST03
AND
IN101
IN102
PSV01
PLT01
3600
OUT103
>
AND
120
PCN01Q
PST01ET