P.16.2
SEL-411L Relay Protection Manual Date Code 20151029
Relay Word Bits
Alphabetic
27AWI A-phase undervoltage condition 58
27B81 Under Voltage Supervision for Frequency Elements 394
27BPO B-phase undervoltage, pole open 81
27BWI B-phase undervoltage condition 58
27CPO C-phase undervoltage, pole open 82
27CWI C-phase undervoltage condition 58
27TC1–27TC6 Undervoltage Element 1–6 torque control asserted. 231
2POBK1 Two poles open Circuit Breaker 1 45
2POBK2 Two poles open Circuit Breaker 2 45
32GF Forward ground directional element 27
32GR Reverse ground directional element 27
32IE 32I internal enable 26
32QE 32Q internal enable 26
32QF Forward negative-sequence overcurrent directional declaration 25
32QGE 32QG internal enable 26
32QR Reverse negative-sequence overcurrent directional declaration 25
32SPOF Forward open-pole directional declaration 25
32SPOR Reverse open-pole directional declaration 25
32VE 32V internal enable 26
3P1CLS Three-pole Circuit Breaker 1 reclose supervision (SEL
OGIC control equation) 42
3P2CLS Three-pole Circuit Breaker 2 reclose supervision (SEL
OGIC control equation) 42
3PARC Three-pole reclose initiate qualified 39
3PLSHT Three-pole reclose last shot 40
3PO All three poles open 81
3POBK1 Three-pole open Circuit Breaker 1 39
3POBK2 Three-pole open Circuit Breaker 2 40
3POI Three-pole open interval timing 47
3POISC Three-pole open interval supervision condition 47
3POLINE Three-pole open line 40
3PRCIP Three-pole reclaim in progress 45
3PRI Three-pole reclose initiation (SEL
OGIC control equation) 39
3PS Trip logic three-phase selected 54
3PSHOT0–3PSHOT4 Three-pole shot counter = 0–4 46
3PT Three-pole trip 55
50ABC Positive-sequence current above 50ABCP threshold 20
50FA1 Circuit Breaker 1 A-phase current threshold exceeded 66
50FA2 Circuit Breaker 2 A-phase current threshold exceeded 72
50FB1 Circuit Breaker 1 B-phase current threshold exceeded 66
50FB2 Circuit Breaker 2 B-phase current threshold exceeded 72
50FC1 Circuit Breaker 1 C-phase current threshold exceeded 66
50FC2 Circuit Breaker 2 C-phase current threshold exceeded 72
Table 16.1 Alphabetical List of Relay Word Bits (Sheet 2 of 39)
Name Bit Description Row
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