Sel 411L - Figure 3.122 Zone 2 Mho Ground-Distance Element Logic Diagram

P.3.181
Date Code 20151029 Protection Manual SEL-411L Relay
Protection Functions
Mho Ground-Distance Elements
Figure 3.122 Zone 2 Mho Ground-Distance Element Logic Diagram
32SPOF
MAG2
MBG2
Z2G
MCG2
XAG2
XBG2
XCG2
32GF
FSA
SPO
SPOA
OSB2
OSBA
3PO
ILOP
VPOLV
A-Phase Mho Ground Distance Logic.
B- and C-Phase Logic Is Similar.
mAGF is the Forward A-Phase-to-Ground
Mho Distance Calculation.
Relay
Word
Bit
Relay
Word
Bits
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Word
Bits
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Word
Bits
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Word
Bit
Relay
Word
Bits
—
+
—
+
IAL
IGL
mAGF < Z2MG
0.1 • I
nom