J.6
SEL-787 Relay Instruction Manual Date Code 20081022
Relay Word Bits
Definitions
51G2P Residual ground time-overcurrent element pickup—Winding 2. 13
51G2R Residual ground time-overcurrent element reset—Winding 2. 14
51G2T Residual ground time-overcurrent element trip—Winding 2. 4
51N1P Neutral ground time-overcurrent element pickup—Input 1. 13
51N1R Neutral ground time-overcurrent element reset. 14
51N1T Neutral ground time-overcurrent element trip—Input 1. 4
51P1P Maximum phase time-overcurrent element pickup—Winding 1. 13
51P1R Maximum phase time-overcurrent element reset—Winding 1. 14
51P1T Maximum phase time-overcurrent element trip—Winding 1. 4
51P2P Maximum phase time-overcurrent element pickup—Winding 2. 13
51P2R Maximum phase time-overcurrent element reset—Winding 2. 14
51P2T Maximum phase time-overcurrent element trip—Winding 2. 4
51Q1P Negative-sequence time-overcurrent element pickup—Winding 1. 13
51Q1R Negative-sequence time-overcurrent element reset—Winding 1. 14
51Q1T Negative-sequence time-overcurrent element trip—Winding 1. 4
51Q2P Negative-sequence time-overcurrent element pickup—Winding 2. 13
51Q2R Negative-sequence time-overcurrent element reset—Winding 2. 14
51Q2T Negative-sequence time-overcurrent element trip—Winding 2. 4
52A1 Circuit breaker 1, contact A. 12
52A2 Circuit breaker 2, contact A. 12
59P1 Level 1 phase overvoltage element pickup. 17
59P1T Level 1 phase overvoltage element trip. 6
59P2 Level 2 phase overvoltage element pickup. 17
59P2T Level 2 phase overvoltage element trip. 6
59Q1 Level 1 negative-sequence overvoltage element pickup. 18
59Q1T Level 1 negative-sequence overvoltage element trip. 7
59Q2 Level 2 negative-sequence overvoltage element pickup. 18
59Q2T Level 2 negative-sequence overvoltage element trip. 7
5HB1 Fifth Harmonic block asserted for differential element 1. 15
5HB2 Fifth Harmonic block asserted for differential element 2. 15
5HB3 Fifth Harmonic block asserted for differential element 3. 15
5HBL Fifth Harmonic block asserted (5HB1 OR 5HB2 OR 5HB3). 15
81D1T Level 1 definite-time over/under frequency trip. 7
81D2T Level 2 definite-time over/under frequency trip. 7
81D3T Level 3 definite-time over/under frequency trip. 7
81D4T Level 4 definite-time over/under frequency trip. 7
87AP Differential Current Alarm element pickup. 17
87AT Differential Current Alarm element trip. 6
87BL1 Harmonic block asserted for differential element 1. 16
87BL2 Harmonic block asserted for differential element 2. 16
87BL3 Harmonic block asserted for differential element 3. 16
Table J.2 Relay Word Bit Definitions for the SEL-787 (Sheet 3 of 9)
Bit Definition Row
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