4.112
SEL-700G Relay
Instruction Manual
Date Code 20170814
Protection and Logic Functions
Group Settings (SET Command)
Figure 4.79
Channel IN Current-Polarized Directional Element
q
From Table 4.4
w
To Figure 4.81
e
From Figure 4.75
Forward Threshold = (Channel I
N
Nominal Rating) • (Phase Channels Nominal Rating) • (0.05)
2
Forward Threshold:
Reverse Threshold = —(Channel I
N
Nominal Rating) • (Phase Channels Nominal Rating) • (0.05)
2
Reverse Threshold:
DIRIE is highest
RDIRI
(Reverse)
FDIRI
(Forward
Best Choice
Ground
Directional
Logic
50GF
Enable
Forward
Threshold
DIRIE
Reverse
Threshold
50GR
Re[I
G
• (I
N
• 1
∠
INMTA)*]
I
G
I
N
Relay
Word
Bits
Relay
Word
Bit
Relay
Word
Bit
Relay
Word
Bit
choice that is asserted
(I
G
= 3I
0
)
(Residual)
1
2
3
3
3
Summary of Contents for SEL-700G Series
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