Sel 411L - Page 969

P.16.41
Date Code 20151029 Protection Manual SEL-411L Relay
Relay Word Bits
Row List
19 SERCCA
a
Series-compensated line CA-phase output
19 SERCA, SERCB, SERCC
a
Series-compensated line A-phase, B-phase, C-phase outputs
Out-of-Step Elements
20 X6ABC Impedance inside Zone 6 out-of-step
20 X7ABC Impedance inside Zone 7 out-of-step
20 50ABC Positive-sequence current above 50ABCP threshold
20 UBOSB Unblock out-of-step blocking
20 OSBA, OSBB, OSBC A-phase, B-phase, C-phase out-of-step block
20 OSB1 Block Zone 1 during an out-of-step condition
21 OSB2–OSB5 Block Zone 2–5 during an out-of-step condition
21 OSB Out-of-step block
21 OSTI Incoming out-of-step tripping
21 OSTO Outgoing out-of-step tripping
21 OST Out-of-step tripping
22 67QUBF Forward direction supervised output from 50QUBP
22 67QUBR Reverse direction supervised output from 50QUBP
22 OOSDET Out-of-step condition detected
22 SSD Out-of-step swing signature detected
22 SD Swing center voltage slope detected
22 R1T Positive-sequence resistance within Zone 7 left resistance blinder
23 X6T Positive-sequence reactance within Zone 6 reactance blinder
23 R6T Positive-sequence resistance within Zone 6 resistance blinder
23 RR6 Positive-sequence resistance within Zone 6 right resistance blinder
23 RL6 Positive-sequence resistance within Zone 6 left resistance blinder
23 X7T Positive-sequence reactance within Zone 7 reactance blinder
23 R7T Positive-sequence resistance within Zone 7 resistance blinder
23 RR7 Positive-sequence resistance within Zone 7 right resistance blinder
23 RL7 Positive-sequence resistance within Zone 7 left resistance blinder
24 DOSB Dependable out-of-step blocking asserted
Directional Elements
25 F32P Forward phase directional declaration
25 R32P Reverse phase directional declaration
25 F32Q Forward negative-sequence phase directional declaration
25 R32Q Reverse negative-sequence phase directional declaration
25 32QF Forward negative-sequence overcurrent directional declaration
25 32QR Reverse negative-sequence overcurrent directional declaration
25 32SPOF Forward open-pole directional declaration
25 32SPOR Reverse open-pole directional declaration
26 50QF Forward negative-sequence supervisory current element
26 50QR Reverse negative-sequence supervisory current element
26 50GF Forward zero-sequence supervisory current element
Table 16.2 Row List of Relay Word Bits (Sheet 3 of 35)
Row Name Bit Description