Sel 411L - Figure 3.140 Negative-Sequence Instantaneous;Directional Overcurrent Elements; Selectable Time-Overcurrent Elements (51)

P.3.205
Date Code 20151029 Protection Manual SEL-411L Relay
Protection Functions
Selectable Time-Overcurrent Elements (51)
Figure 3.140 Negative-Sequence Instantaneous/Directional Overcurrent
Elements
Selectable Time-Overcurrent Elements (51)
Instead of having dedicated inverse-time overcurrent elements for the current
channels, the relay offers the flexibility of ten unassigned time-overcurrent
elements, each with the choice of five U.S. and five IEC operating curves.
Unassigned means that the 51 element operating quantities are available for
assignment, as the application requires (see Table 3.110).
Inverse-time overcurrent elements are not enabled in the default settings.
Enable as many as ten inverse-time overcurrent elements by setting E51to as
many elements as you need (1–10). After you enable these elements, the
inverse-time overcurrent elements up to and including the number you entered
67Q1D
0
—
+
50Q1
67Q1
67Q1T
3I2L
50Q1P
(Setting)
67Q1TC
(SEL
OGIC
Setting)
32QF
(Relay
Word Bit)
Relay
Word
Bits
67Q2D
0
—
+
50Q2
67Q2
67Q2T
50Q2P
(Setting)
67Q2TC
(SEL
OGIC
Setting)
32QF
(Relay
Word Bit)
67Q3D
0
—
+
50Q3
67Q3
67Q3T
50Q3P
(Setting)
DIR3 := F
(Setting)
67Q3TC
(SEL
OGIC
Setting)
32QF
(Relay
Word Bit)
32QR
(Relay
Word Bit)
67Q4D
0
—
+
50Q4
67Q4
67Q4T
50Q4P
(Setting)
DIR4 := F
(Setting)
67Q4TC
(SEL
OGIC
Setting)
32QF
(Relay
Word Bit)
32QR
(Relay
Word Bit)