Schweitzer Engineering Laboratories SEL-787 - Table J.2 Relay Word Bit Definitions for the SEL-787

J.4
SEL-787 Relay Instruction Manual Date Code 20081022
Relay Word Bits
Definitions
Definitions
95
AI304LW1 AI304LW2 AI304LAL
a
AI304HW1 AI304HW2 AI304HAL
a
96
AI401LW1 AI401LW2 AI401LAL
a
AI401HW1 AI401HW2 AI401HAL
a
97
AI402LW1 AI402LW2 AI402LAL
a
AI402HW1 AI402HW2 AI402HAL
a
98
AI403LW1 AI403LW2 AI403LAL
a
AI403HW1 AI403HW2 AI403HAL
a
99
AI404LW1 AI404LW2 AI404LAL
a
AI404HW1 AI404HW2 AI404HAL
a
100
AI501LW1 AI501LW2 AI501LAL
a
AI501HW1 AI501HW2 AI501HAL
a
101
AI502LW1 AI502LW2 AI502LAL
a
AI502HW1 AI502HW2 AI502HAL
a
102
AI503LW1 AI503LW2 AI503LAL
a
AI503HW1 AI503HW2 AI503HAL
a
103
AI504LW1 AI504LW2 AI504LAL
a
AI504HW1 AI504HW2 AI504HAL
a
104
DI_A1 DI_B1 DI_C1 DI_A2 DI_B2 DI_C2
aa
105
TQUAL1 TQUAL2 TQUAL4 TQUAL8 DST DSTP LPSEC LPSECP
106
aa
TUTCS TUTC1 TUTC2 TUTC4 TUTC8 TUTCH
a
Reserved for future use.
Ta b l e J.1 S E L- 787 Relay Word B i ts (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