J.7
Date Code 20150130 Instruction Manual SEL-787 Relay
Relay Word Bits
Definitions
51P2AR A-phase time-overcurrent element reset—Winding 2 12
51P2AT A-phase time-overcurrent element trip—Winding 2 100
51P2BP B-phase time-overcurrent element pickup—Winding 2 101
51P2BR B-phase time-overcurrent element reset—Winding 2 13
51P2BT C-phase time-overcurrent element trip—Winding 2 101
51P2CP C-phase time-overcurrent element pickup—Winding 2 102
51P2CR C-phase time-overcurrent element reset—Winding 2 14
51P2CT C-phase time-overcurrent element trip—Winding 2 102
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
87HB Harmonic block differential element asserted 16
Table J.2 Relay Word Bit Definitions for the SEL-787 (Sheet 4 of 10)
Bit Definition Row
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