Schweitzer Engineering Laboratories SEL-700G Series, Instruction Manual

Page: 208 / 824

4.102
SEL-700G Relay Instruction Manual Date Code 20170814
Protection and Logic Functions
Group Settings (SET Command)
elements. ORDER can be set with the elements listed and defined in
Table 4.27.
The order in which these directional elements are listed in setting ORDER
determines the priority in which they operate to provide Best Choice Ground
Directional Element logic control. See the discussion on setting ORDER in
the Directional Control Settings on page 4.121.
Figure 4.72 General Logic Flow of Directional Control for Residual Ground Overcurrent Elements
Figure 4.73 General Logic Flow of Directional Control for Neutral-Ground Overcurrent Elements
q
Figure 4.74
w
Figure 4.75
e
Table 4.27 and Table 4.28
r
Figure 4.77
t
Figure 4.78
y
Figure 4.79
u
Figure 4.81
i
Figure 4.83
o
Figure 4.61
a
Figure 4.53 and Figure 4.54
q
Figure 4.76
w
Figure 4.80
e
Figure 4.82
r
Figure 4.84
t
Figure 4.60
y
Figure 4.56
Order = U can only be set on the X side.
DIRIE
"I" listed
in setting
ORDER
FDIRI/
RDIRI
Channel IN
Current-
Polarized
Disable
Inputs
Best Choice
Ground
Directional
Logic
Zero-Sequence
Voltage-
Polarized
Negative-
Sequence
Voltage-
Polarized
DIRVE
"V" listed
in setting
ORDER
"Q" listed
in setting
ORDER
DIRQGE
50QF/
50QR
50GF/
50GR
FDIRV/
RDIRV
FDIRQG/
RDIRQG
DIRGF/
DIRGR
Level 1
Level 2
to Residual Ground
Inst./Def.-Time
Overcurrent
Elements
to Residual Ground
Time-Overcurrent
Elements
Enable Directional
Elements with
Setting ORDER
Internal
Enables
Relay Word
Bit Outputs Directional
Elements
Relay Word
Bit Outputs
Relay Word
Bit Outputs
Direction
Forward/
Reverse Logic
Directional
Control
Directional
Element
Routing
2
1
3
4
5
10
9
8
6
7
FDIRN/
RDIRN
DIRNE
ORDER = U
50NF/
50NR
to Neutral Ground
Time-Overcurrent Elements
to Neutral Ground
Inst./Def.-Time
Overcurrent Elements
Level 1
DIRNF/
DIRNR
Zero-Sequence
Voltage
Polarized
Level 2
Enable Directional
Elements with
Setting ORDER Internal
Enables Relay Word
Bit Outputs Directional
Elements
Relay Word
Bit Outputs Relay Word
Bit Outputs
Direction
Forward/
Reverse Logic
Directional
Control
Directional
Element
Routing
1
2
3
4
5
6