J.4
SEL-787 Relay
Instruction Manual
Date Code 20081022
Relay Word Bits
Definitions
Definitions
95
AI304LW1
AI304LW2
AI304LAL
AI304HW1
AI304HW2
AI304HAL
96
AI401LW1
AI401LW2
AI401LAL
AI401HW1
AI401HW2
AI401HAL
97
AI402LW1
AI402LW2
AI402LAL
AI402HW1
AI402HW2
AI402HAL
98
AI403LW1
AI403LW2
AI403LAL
AI403HW1
AI403HW2
AI403HAL
99
AI404LW1
AI404LW2
AI404LAL
AI404HW1
AI404HW2
AI404HAL
100
AI501LW1
AI501LW2
AI501LAL
AI501HW1
AI501HW2
AI501HAL
101
AI502LW1
AI502LW2
AI502LAL
AI502HW1
AI502HW2
AI502HAL
102
AI503LW1
AI503LW2
AI503LAL
AI503HW1
AI503HW2
AI503HAL
103
AI504LW1
AI504LW2
AI504LAL
AI504HW1
AI504HW2
AI504HAL
104
DI_A1
DI_B1
DI_C1
DI_A2
DI_B2
DI_C2
105
TQUAL1
TQUAL2
TQUAL4
TQUAL8
DST
DSTP
LPSEC
LPSECP
106
TUTCS
TUTC1
TUTC2
TUTC4
TUTC8
TUTCH
a
Reserved for future use.
Table J.1
SEL-787 Relay Word Bits
(Sheet 4 of 4)
Bit/
Row
Relay Word Bits
7
6
5
4
3
2
1
0
Table J.2
Relay Word Bit Definitions for the SEL-787
(Sheet 1 of 9)
Bit
Definition
Row
a
Reserved.
—
2_4HB1
Second or Fourth Harmonic block asserted for differential element 1.
15
2_4HB2
Second or Fourth Harmonic block asserted for differential element 2.
15
2_4HB3
Second or Fourth Harmonic block asserted for differential element 3.
15
2_4HBL
Second or Fourth Harmonic block asserted (2_4HB1 OR 2_4HB2 OR 2_4HB3).
15
24C2
Level 2 Volts/Hertz composite element pickup.
8
24C2T
Level 2 Volts/Hertz composite element timed out.
8
24CR
Level 2 Volts/Hertz element fully reset.
8
24D1
Level 1 Volts/Hertz instantaneous pickup.
8
24D1T
Level 1 Volts/Hertz definite-time element timed out.
8
27P1
Level 1 phase undervoltage element pickup.
17
27P1T
Level 1 phase undervoltage element trip.
6
27P2
Level 2 phase undervoltage element pickup.
17
27P2T
Level 2 phase undervoltage element trip.
6
3I2DEM
Negative-sequence current demand pickup.
41
3PWR1P
Three phase power element 1 pickup.
17
3PWR1T
Three phase power element 1 trip.
6
3PWR2P
Three phase power element 2 pickup.
17
3PWR2T
Three phase power element 2 trip.
6
Summary of Contents for SEL-787
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