Schweitzer Engineering Laboratories SEL-351A - Figure 4.22 Routing of Directional Elements to Negative-Sequence and Phase Overcurrent Elements

4.35
Date Code 20080213 Instruction Manual SEL-351A Relay
Loss-of-Potential, Load Encroachment, and Directional Element Logic
Directional Control for Negative-Sequence and Phase Overcurrent Elements (Not in SEL-351A-1)
q From Figure 4.1; w from Figure 4.20; e from Figure 4.21; r to Figure 4.23; t to
Figure 4.24.
Figure 4.22 Routing of Directional Elements to Negative-Sequence and
Phase Overcurrent Elements
LOP
w
e
F32Q
R32Q
Relay
Word
Bits
32PF
(Forward)
32QF
(Forward)
32PR
(Reverse)
32QR
(Reverse)
Setting
ELOP = Y
q
r
t
Loss-of-
Potential
F32P
R32P
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