Schweitzer Engineering Laboratories SEL-587Z - Relay Word Bits: Overcurrent Elements

C.2
SEL-587Z Instruction Manual Date Code 20020903
Relay Word Bits
Table C.2 Relay Word Bits: Overcurrent Elements
Row Name Description
1 51P1 Phase time-overcurrent element pickup
1 51PT Phase time-overcurrent element
1 51PR Phase time-overcurrent element reset
1 51A A-phase time-overcurrent element pickup
1 51AT A-phase time-overcurrent element
1 51AR A-phase time-overcurrent element reset
1 51B B-phase time-overcurrent element pickup
1 51BT B-phase time-overcurrent element
2 51BR B-phase time-overcurrent element reset
2 51C C-phase time-overcurrent element pickup
2 51CT C-phase time-overcurrent element
2 51CR C-phase time-overcurrent element reset
2 51G Residual ground time-overcurrent element pickup
2 51GT Residual ground time-overcurrent element
2 51GR Residual ground time-overcurrent element reset
2 51Q Negative-sequence time-overcurrent element pickup
3 51QT Negative-sequence time-overcurrent element
3 51QR Negative-sequence time-overcurrent element reset
3 * Reserved for future use
3 50P1 First phase overcurrent element pickup
3 50P2 Second phase overcurrent element pickup
3 50P3 Third phase overcurrent element pickup
3 50A1 First single-phase instantaneous overcurrent element
3 50A2 Second single-phase instantaneous overcurrent element
4 50B1 First single-phase instantaneous overcurrent element
4 50B2 Second single-phase instantaneous overcurrent element
4 50C1 First single-phase instantaneous overcurrent element
4 50C2 Second single-phase instantaneous overcurrent element
4 50G1 First residual ground overcurrent element pickup
4 50G2 Second residual ground overcurrent element pickup
4 50Q1 First negative-sequence definite-time overcurrent element pickup
4 50Q2 Second negative-sequence definite-time overcurrent element pickup