Sel 411L - Figure 3.124 Zone 1 Quadrilateral Ground-Distance Element Logic Diagram; Figure 3.125 Zone 2 Quadrilateral Distance Element Logic Diagram

P.3.185
Date Code 20151029 Protection Manual SEL-411L Relay
Protection Functions
Quadrilateral Ground-Distance Elements
Figure 3.124 Zone 1 Quadrilateral Ground-Distance Element Logic Diagram
Figure 3.125 Zone 2 Quadrilateral Distance Element Logic Diagram
CVTBL
XAG1
IAL
IGL
0.1 • I
nom
—RG1 < rAG1 < RG1
xAG1 < XG1
FSA
SPO
3PO
0SB1
67Q1T
ILOP
VPOLV
SERCA
B- and C-Phase Logic Is Similar.
xAG1 is the A-Phase-to-Ground Zone 1 Reactance Calculation.
rAG1 is the A-Phase-to-Ground Zone 1 Resistance Calculation.
+
—
+
—
XGPOL := IG
(setting)
32VE
32QE
32GF
XGPOL := I2
(setting)
ARESE = N
ENX2AG
Relay
Word
Bits
Relay
Word Bits
Relay
Word
Bit
(Setting)
(Setting)
XAG2
XGPOL := IG
32VE
32QE
32GF
XGPOL := I2
IAL
IGL
xAGF < XG2
—RG2 < rAGF < RG2
0.1 • I
nom
FSA
SPO
B- and C-Phase Logic Is Similar.
xAGF is the A-Phase-to-Ground Forward Reactance Calculation.
rAGF is the A-Phase-to-Ground Forward Resistance Calculation.
+
—
+
—
| 3IA2LF |
+
—
3PO
ILOP
VPOLV
ARESE = N
ENX2AG