Sel 751A - Page 608

J.6
SEL-751A Relay Instruction Manual Date Code 20100129
Relay Word Bits
Definitions
50Q4P Definite-Time Negative-Sequence Overcurrent Trip 4 Pickup (see Figure 4.1). 2
50Q4T Definite-Time Negative-Sequence Overcurrent Trip 4 Output (see Figure 4.1). 3
51AP Phase A Time-Overcurrent Element Pickup (see Figure 4.3). 6
51AR Phase A Time-Overcurrent Element Reset (see Figure 4.3). 8
51AT Phase A Time-Overcurrent Element Trip (see Figure 4.3). 7
51BP Phase B Time-Overcurrent Element Pickup (see Figure 4.3). 6
51BR Phase B Time-Overcurrent Element Reset (see Figure 4.3). 8
51BT Phase B Time-Overcurrent Element Trip (see Figure 4.3). 7
51CP Phase C Time-Overcurrent Element Pickup (see Figure 4.3). 6
51CR Phase C Time-Overcurrent Element Reset (see Figure 4.3). 8
51CT Phase C Time-Overcurrent Element Trip (see Figure 4.3). 7
51G1P Residual Time-Overcurrent Trip 1 Pickup (see Figure 4.7). 9
51G1R Residual Time-Overcurrent Trip 1 Reset (see Figure 4.7). 9
51G1T Residual Time-Overcurrent Trip 1 Output (see Figure 4.7). 9
51G2P Residual Time-Overcurrent Trip 2 Pickup (see Figure 4.7). 9
51G2R Residual Time-Overcurrent Trip 2 Reset (see Figure 4.7). 9
51G2T Residual Time-Overcurrent Trip 2 Output (see Figure 4.7). 9
51N1P Neutral Time-Overcurrent Trip 1 Pickup (see Figure 4.6). 6
51N1R Neutral Time-Overcurrent Trip 1 Reset (see Figure 4.6). 8
51N1T Neutral Time-Overcurrent Trip 1 Output (see Figure 4.6). 7
51N2P Neutral Time-Overcurrent Trip 2 Pickup (see Figure 4.6). 6
51N2R Neutral Time-Overcurrent Trip 2 Reset (see Figure 4.6). 8
51N2T Neutral Time-Overcurrent Trip 2 Output (see Figure 4.6). 7
51P1P Maximum Phase Time-Overcurrent Trip 1 Pickup (see Figure 4.4). 6
51P1R Maximum Phase Time-Overcurrent Trip 1 Reset (see Figure 4.4). 8
51P1T Maximum Phase Time-Overcurrent Trip 1 Output (see Figure 4.4). 7
51P2P Maximum Phase Time-Overcurrent Trip 2 Pickup (see Figure 4.4). 6
51P2R Maximum Phase Time-Overcurrent Trip 2 Reset (see Figure 4.4). 8
51P2T Maximum Phase Time-Overcurrent Trip 2 Output (see Figure 4.4). 7
51QP Negative-Sequence Time-Overcurrent Element Pickup (see Figure 4.5). 6
51QR Negative-Sequence Time-Overcurrent Element Reset (see Figure 4.5). 8
51QT Negative-Sequence Time-Overcurrent Element Trip Output (see Figure 4.5). 7
52A Asserts when the SEL
OGIC control equation 52A result is logical 1. Use to indicate that the cir-
cuit breaker is closed.
1
55A Power Factor Alarm. Asserts when the relay issues a power factor element alarm/warning (see
Figure 4.25).
11
55T Power Factor Trip. Asserts when the relay issues a power factor element alarm or trip (see
Figure 4.25).
11
59G1 Level 1 Zero-Sequence Overvoltage Element Pickup. 114
59G1T Level 1 Zero-Sequence Overvoltage Element Trip. 114
59G2 Level 2 Zero-Sequence Overvoltage Element Pickup. 114
59G2T Level 2 Zero-Sequence Overvoltage Element Trip. 114
Table J.2 Relay Word Bit Definitions for the SEL-751A (Sheet 3 of 11)
Bit Definition Row