Schweitzer Engineering Laboratories SEL-351A - Figure 3.12 Levels 1 through 4 Negative-Sequence Instantaneous Overcurrent Elements (with Directional Control and Definite-Time Elements in SEL-351 A); Figure 3.13 Levels 5 through 6 Negative-Sequence Instantaneous Overcurrent Elements

3.15
Date Code 20080213 Instruction Manual SEL-351A Relay
Overcurrent, Voltage, Synchronism Check, and Frequency Elements
Instantaneous/Definite-Time Overcurrent Elements
q From Figure 4.23.
w Not present in SEL-351A-1.
Figure 3.12 Levels 1 Through 4 Negative-Sequence Instantaneous
Overcurrent Elements (With Directional Control and Definite-Time Elements
in SEL-351A)
Figure 3.13 Levels 5 Through 6 Negative-Sequence Instantaneous
Overcurrent Elements
67Q1
50Q1
67Q1T
Relay
Word
Bits
67Q1TC
SEL
OGIC
Setting
Enabled
Levels
67Q1D
0
Directional Control
(asserted to logical 1
continuously if E32 = N)
SEL
OGIC
Torque Control
q
(Level 1)
Level 1
(Setting
E5OQ
≥
1)
67Q3
50Q3
67Q3T
67Q3TC
SELOGIC
Setting
67Q3D
0
Directional Control
(asserted to logical 1
continuously if E32 = N)
SEL
OGIC
Torque Control
Level 3
(Setting
E5OQ ≥ 3)
67Q4
50Q4
67Q4T
67Q4TC
SELOGIC
Setting
67Q4D
0
Directional Control
(asserted to logical 1
continuously if E32 = N)
SEL
OGIC
Torque Control
Level 4
(Setting
E5OQ ≥ 4)
50Q2
67Q2
67Q2T
67Q2D
0
Directional Control
(asserted to logical 1
continuously if E32 = N)
SELOGIC
Torque Control
Level 2
(Setting
E5OQ
≥
2)
67Q2TC
SELOGIC
Setting
50Q1P
3I
2
Setting
q
(Level 3)
50Q3P
3I
2
Setting
q
(Level 4)
50Q4P
3I
2
Setting
q
(Level 2)
50Q2P
3I
2
Setting
w
w
w
w
w
w
w
w
w
w
w
w
5OQ5
5OQ6
Relay
Word
Bits
50Q5P
50Q6P
3I
2
Settings
Enabled
Levels
Level 5
(Setting
E5OQ ≥ 5)
Level 6
(Setting
E5OQ = 6)
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