xviii List of Tables
SEL-421/SEL-421-1 Relay Date Code 20020501
Table 9.9 Settings Group Selection .................................................................................................... R.9.5
Table 9.10 Data Reset Control.............................................................................................................. R.9.6
Table 9.11 Frequency Estimation ......................................................................................................... R.9.6
Table 9.12 Time and Date Management............................................................................................... R.9.6
Table 9.13 Current and Voltage Source Selection ................................................................................ R.9.7
Table 9.14 Breaker Monitor Settings Categories ................................................................................. R.9.8
Table 9.15 Breaker Configuration ........................................................................................................ R.9.8
Table 9.16 Breaker 1 Inputs.................................................................................................................. R.9.8
Table 9.18 Breaker 1 Monitor (and Breaker 2 Monitor) ...................................................................... R.9.9
Table 9.19 Breaker 1 Contact Wear (and Breaker 2 Contact Wear)..................................................... R.9.9
Table 9.17 Breaker 2 Inputs.................................................................................................................. R.9.9
Table 9.20 Breaker 1 Electrical Operating Time (and Breaker 2 Electrical Operating Time) ........... R.9.10
Table 9.21 Breaker 1 Mechanical Operating Time (and Breaker 2 Mechanical Operating Time)..... R.9.10
Table 9.22 Breaker 1 Pole Scatter and Pole Discrepancy
(and Breaker 2 Pole Scatter and Pole Discrepancy)........................................................ R.9.10
Table 9.23 Breaker 1 Inactivity Time Elapsed (and Breaker 2 Inactivity Time Elapsed).................. R.9.10
Table 9.24 Breaker 1 Motor Running Time (and Breaker 2Motor Running Time) ........................... R.9.10
Table 9.25 Breaker 1 Current Interrupted (and Breaker 2 Current Interrupted)................................. R.9.10
Table 9.26 Group Settings Categories ................................................................................................ R.9.11
Table 9.27 Line Configuration ........................................................................................................... R.9.12
Table 9.28 Relay Configuration ......................................................................................................... R.9.12
Table 9.29 Mho Phase Distance Element Reach ................................................................................ R.9.13
Table 9.30 Series Compensation ........................................................................................................ R.9.13
Table 9.31 Mho Phase Distance Element Time Delay ....................................................................... R.9.14
Table 9.32 Mho Ground Distance Element Reach ............................................................................. R.9.14
Table 9.33 Quad Ground Distance Element Reach ............................................................................ R.9.14
Table 9.34 Zero-Sequence Compensation Factor............................................................................... R.9.15
Table 9.35 Ground Distance Element Time Delay............................................................................. R.9.15
Table 9.36 Distance Element Common Time Delay .......................................................................... R.9.16
Table 9.37 Switch-Onto-Fault Scheme............................................................................................... R.9.16
Table 9.38 Out-of-Step Tripping/Blocking......................................................................................... R.9.16
Table 9.39 Load Encroachment.......................................................................................................... R.9.17
Table 9.40 Phase Instantaneous Overcurrent Pickup.......................................................................... R.9.18
Table 9.41 Phase Definite-Time Overcurrent Time Delay ................................................................. R.9.18
Table 9.42 Phase Instantaneous Definite-Time Overcurrent Torque Control .................................... R.9.18
Table 9.43 Residual Ground Instantaneous Overcurrent Pickup........................................................ R.9.18
Table 9.44 Residual Ground Definite-Time Overcurrent Time Delay ............................................... R.9.19
Table 9.45 Residual Ground Instantaneous Definite-Time Overcurrent Torque Control .................. R.9.19
Table 9.46 Negative-Sequence Instantaneous Overcurrent Pickup.................................................... R.9.19
Table 9.47 Negative-Sequence Definite-Time Overcurrent Time Delay ........................................... R.9.19
Table 9.48 Negative-Sequence Instantaneous Definite-Time Overcurrent Torque Control............... R.9.19
Table 9.49 Selectable Operating Quantity Inverse Time Overcurrent Element 1 .............................. R.9.20
Table 9.50 Selectable Operating Quantity Inverse Time Overcurrent Element 2 .............................. R.9.20
Table 9.51 Selectable Operating Quantity Inverse Time Overcurrent Element 3 .............................. R.9.21
Table 9.52 Zone/Level Direction........................................................................................................ R.9.21
Table 9.53 Directional Control Element............................................................................................. R.9.21
Table 9.54 Pole Open Detection......................................................................................................... R.9.22
Table 9.55 POTT Trip Scheme........................................................................................................... R.9.22
Table 9.56 DCUB Trip Scheme.......................................................................................................... R.9.22
Table 9.57 DCB Trip Scheme............................................................................................................. R.9.23
Table 9.58 Breaker 1 Failure Logic (and Breaker 2 Failure Logic) ................................................... R.9.23
Table 9.59 Synchronism Check Element Reference .......................................................................... R.9.24
Table 9.60 Breaker 1 Synchronism Check ......................................................................................... R.9.24
Table 9.61 Breaker 2 Synchronism Check ......................................................................................... R.9.25
Table 9.62 Recloser and Manual Closing ......................................................................................... R.9.25
Table 9.63 Single-Pole Reclose Settings ............................................................................................ R.9.26
Table 9.64 Three-Pole Reclose Settings............................................................................................. R.9.26
Table 9.65 Voltage Elements .............................................................................................................. R.9.27