50BF - Breaker Failure Protection .................................................................................................... 4-39
BESTlogic Settings for Breaker Failure Protection ....................................................................... 4-40
Operating Settings for Breaker Failure Protection ........................................................................ 4-41
Retrieving Breaker Failure Protection Status from the Relay ....................................................... 4-42
LOGIC TIMERS ................................................................................................................................... 4-43
62 - General Purpose Logic Timers ................................................................................................. 4-43
Mode 1, PU/DO (Pickup/Dropout Timer) ...................................................................................... 4-43
Mode 2, One-Shot Nonretriggerable Timer .................................................................................. 4-43
Mode 3, One-Shot Retriggerable Timer ....................................................................................... 4-44
Mode 4, Oscillator ......................................................................................................................... 4-44
Mode 5, Integrating Timer ............................................................................................................. 4-44
Mode 6, Latch ............................................................................................................................... 4-45
BESTlogic Settings for General Purpose Logic Timers ................................................................ 4-45
Operating Settings for General Purpose Logic Timers ................................................................. 4-46
Retrieving General Purpose Logic Timers Status from the Relay ................................................ 4-47
RECLOSING (OPTIONAL) .................................................................................................................. 4-48
Inputs and Outputs ........................................................................................................................... 4-48
Reclose Initiate (RI) ...................................................................................................................... 4-48
Breaker Status (STATUS) ............................................................................................................ 4-48
Reclose Wait (WAIT) .................................................................................................................... 4-49
Drive to Lockout/Block Recloser (DTL/BLK) ................................................................................. 4-49
Pilot Initiate (PI) and Pilot Reclose (79P) ..................................................................................... 4-49
Close (79C) ................................................................................................................................... 4-49
Recloser Running (79RNG) .......................................................................................................... 4-49
Lockout (79LO) ............................................................................................................................. 4-49
Reset Timer (79RST) .................................................................................................................... 4-49
Sequence Controlled Block (79SCB) ........................................................................................... 4-49
BESTlogic Settings for Reclosing..................................................................................................... 4-50
Operating Settings for Reclosing ...................................................................................................... 4-51
Reclosing Fail Timer (79F) ........................................................................................................... 4-52
Maximum Cycle Timer (MAX Cycle) ............................................................................................. 4-52
Sequence Controlled Blocking (SCB) ........................................................................................... 4-52
Zone-Sequence Coordination .......................................................................................................... 4-53
Retrieving Reclosing Status from the Relay ..................................................................................... 4-54
SYNC-CHECK PROTECTION ............................................................................................................. 4-56
25 - Sync-Check Protection .............................................................................................................. 4-56
BESTlogic Settings for Sync-Check Protection ............................................................................ 4-57
Operating Settings for Sync-Check .............................................................................................. 4-58
Retrieving Sync-Check Protection Status from the Relay ............................................................ 4-59
25VM - Voltage Monitor .................................................................................................................... 4-59
Retrieving Voltage Monitor Status from the Relay ........................................................................ 4-60
VOLTAGE TRANSFORMER FUSE LOSS DETECTION (BE1-700V) ................................................ 4-60
60FL - Fuse Loss Detection ............................................................................................................. 4-60
Fuse Loss Detection Blocking Settings ........................................................................................ 4-61
Retrieving Fuse Loss Detection Status from the Relay ................................................................ 4-62
VIRTUAL SWITCHES .......................................................................................................................... 4-62
43 - Virtual Selector Switches .......................................................................................................... 4-62
BESTlogic Settings for Virtual Selector Switches ......................................................................... 4-63
Select Before Operate Control of Virtual Selector Switches ........................................................ 4-64
Retrieving Virtual Selector Switch Status from the Relay ............................................................. 4-65
101 - Virtual Breaker Control Switch ................................................................................................ 4-65
BESTlogic Settings for Virtual Breaker Control Switch................................................................. 4-66
Select Before Operate Control of Virtual Breaker Control Switch ................................................ 4-67
Retrieving Virtual Breaker Control Switch Status from the Relay ................................................. 4-67
Figures
Figure 4-1. Setting Group Control Logic Block .......................................................................................... 4-2
Figure 4-2. BESTlogic Function Element Screen, Setting Group Selection .............................................. 4-3
Figure 4-3. Input Control Mode 1 ............................................................................................................... 4-4
Figure 4-4. Example 1 - Change Group on Recloser Shot........................................................................ 4-6
ii
BE1-700 Protection and Control
9376700990 Rev M
