Sel SEL-351S - Figure 4.24 Direction Forward;Reverse Logic for Phase Overcurrent Elements

4.38
SEL-351S Relay Instruction Manual Date Code 20080103
Loss-of-Potential, Load Encroachment, and Directional Element Logic
Directional Control for Negative-Sequence and Phase Overcurrent Elements
q From Figure 4.22; w Figure 3.14 and Figure 3.15; e Figure 3.3.
Figure 4.24 Direction Forward/Reverse Logic for Phase Overcurrent
Elements
Directional
Control
Level
Direction
Settings
32PF
q
DIR1 = F
DIR1 = N
Relay
Word
Bit
Relay
Word
Bit
to Phase
Time-0vercurrent
Elements
w
to Phase
Instantaneous/
Definite-TIme
Overcurrent
Elements
e
VNOM = OFF
Setting
Forward
Forward
32PR
q
Reverse
Level 1
DIR1 = R
Reverse
DIR2 = F
DIR2 = N
Forward
Level 2
DIR2 = R
Reverse
DIR3 = F
DIR3 = N
Forward
Level 3
DIR3 = R
Reverse
DIR4 = F
DIR4 = N
Forward
Level 4
DIR4 = R
Reverse