iv BE1-951 Protection and Control 9328900990 Rev L
Figure 4-68. Reporting and Alarms Screen, VT Monitor Tab.................................................................. 4-73
Figure 4-69. Virtual Lockout Logic Block................................................................................................. 4-74
Figure 4-70. BESTlogic Function Element Screen, 86............................................................................ 4-75
Figure 4-71. Virtual Selector Switches Logic Block................................................................................. 4-76
Figure 4-72. BESTlogic Function Element Screen, 43............................................................................ 4-77
Figure 4-73. 101 Function Block.............................................................................................................. 4-78
Figure 4-74. 101 Control Switch State Diagram...................................................................................... 4-79
Figure 4-75. BESTlogic Function Element Screen, 101.......................................................................... 4-79
Tables
Table 4-1. BESTlogic Settings for Setting Group Control ......................................................................... 4-3
Table 4-2. Setting Group Binary Codes..................................................................................................... 4-4
Table 4-3. Automatic Setting Group Control Settings ............................................................................. 4-10
Table 4-4. BESTlogic Settings for Instantaneous Overcurrent ...............................................................4-14
Table 4-5. Operating Settings for Instantaneous Overcurrent ................................................................4-15
Table 4-6. BESTlogic Settings for Time Overcurrent .............................................................................. 4-18
Table 4-7. Operating Settings for Time Overcurrent ............................................................................... 4-19
Table 4-8. VTP Connection Cross Reference......................................................................................... 4-20
Table 4-9. Operating Settings for Voltage Restraint/Control for Time Overcurrent ................................4-21
Table 4-10. Definitions for Equations 4-2 and 4-3................................................................................... 4-22
Table 4-11. Programmable Time Current Characteristic Curve Coefficients.......................................... 4-22
Table 4-12. Polarization Settings for Directional Overcurrent................................................................. 4-25
Table 4-13. Power Line Impedance Settings .......................................................................................... 4-25
Table 4-14. Internal Constants ................................................................................................................ 4-26
Table 4-15. Fault Type Multipliers ........................................................................................................... 4-28
Table 4-16. BESTlogic Settings for Directional Power............................................................................ 4-30
Table 4-17. Operating Settings for Directional Power............................................................................. 4-31
Table 4-18. BESTlogic Settings for Volts per Hertz Overexcitation ........................................................4-34
Table 4-19. Operating Settings for Volts per Hertz Overexcitation .........................................................4-35
Table 4-20. Programmable Alarm Settings for Volts per Hertz Overexcitation....................................... 4-35
Table 4-21. Undervoltage and Overvoltage Logic Settings..................................................................... 4-37
Table 4-22. Operating Settings for Phase Undervoltage/Overvoltage.................................................... 4-39
Table 4-23. BESTlogic Settings for Auxiliary Undervoltage/Overvoltage................................................4-41
Table 4-24. VTX Connection Settings ..................................................................................................... 4-41
Table 4-25. Operating Settings for Auxiliary Undervoltage/Overvoltage................................................. 4-42
Table 4-26. BESTlogic Settings for Negative-Sequence Overvoltage.................................................... 4-44
Table 4-27. Operating Settings for Negative-Sequence Overvoltage..................................................... 4-45
Table 4-28. BESTlogic Settings for Over/Under Frequency ...................................................................4-47
Table 4-29. Operating Settings for Over/Under Frequency.....................................................................4-49
Table 4-30. BESTlogic Settings for Breaker Failure................................................................................ 4-51
Table 4-31. Operating Settings for Breaker Failure................................................................................. 4-53
Table 4-32. BESTlogic Settings for General Purpose Logic Timers .......................................................4-57
Table 4-33. Operating Settings for General Purpose Logic Timers ........................................................ 4-58
Table 4-34. BESTlogic Settings for Reclosing ........................................................................................4-62
Table 4-35. Operating Settings for Reclosing .........................................................................................4-63
Table 4-36. Zone-Sequence Coordination Settings ................................................................................ 4-65
Table 4-37. BESTlogic Settings for Synchronism-Check........................................................................ 4-69
Table 4-38. Operating Settings for Synchronism-Check......................................................................... 4-70
Table 4-39. Operating Settings for Voltage Monitor................................................................................ 4-70
Table 4-40. Voltage Monitor Logic Settings ............................................................................................ 4-71
Table 4-41. 60FL Logic Parameters........................................................................................................4-72
Table 4-42. 60FL Element Blocking Settings ..........................................................................................4-73
Table 4-43. BESTlogic Settings for Virtual Lockout ................................................................................4-75
Table 4-44. BESTlogic Settings for Virtual Selector Switches ................................................................ 4-77
Table 4-45. BESTlogic Settings for Virtual Breaker Control Switch........................................................ 4-80
Equations
Equation 4-1. Restraint Pickup Level ......................................................................................................4-21
Equation 4-2. Time OC Characteristics for Trip ...................................................................................... 4-21
Equation 4-3. Time OC Characteristics for Reset ................................................................................... 4-21
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