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Contents GE Power Management 3KRQHHVFULSWLRQ0DQXDO*RI.\RXUFRGHTXHVWLRQ Ruvxjjhvwlrqd Page Table of Contents Installation and Maintenance List of Figures Rear View 226B7412 SheetDBF Breaker Failure Protection GEK-106168E ∙ Breaker internal arc detection Monitoring General DescriptionProtection AnalysisDBF Breaker Failure Protection GEK-106168E Overcurrent Units Digital Signal Input # TerminalsProtection Functions Low-Level Overcurrent Breaker Failure Unit 50BF 1PBreaker Failure without current or very low current Reset of Latching RelaysGround Overcurrent Breaker Failure Unit Breaker Arc Detection DeviceMeasurement Internal Protection Status SignalsMonitoring and Recording Functions Associated Breaker StatusGroup Status Comment Optional Exp. Board Optional Exp.Boar Latched#2 Closed Optional Exp. Board Latched#1Closed Internal Communication Status Signals LED Left Column Right Column Circuit Breaker Breaking Capacity MonitoringEvent Recorder Analysis FunctionsBUILT-IN SELF-CHECKING Unit OscillographyEvents to Trigger Oscillography Table Selection Active Table Tables of SettingsControl INPUT-1 INPUT-0Function Configurable Inputs and OutputsTime Synchronization Outputs MAN-MACHINE Interface HMI Remote Communications Breaker Setting Group Active table setting groupInternal Arc Settings Common to all tables Range Default Step Oscillography MaskIndependent for each table Range Default Step 50BF Settings Functions PermittedComments on Settings DBF Breaker Failure Protection GEK-106168E DBF Ranges Models DBF PhaseModel List GroundElectrical Technical CharacteristicsMechanical Test Standard Class CommunicationsStandards DBF Breaker Failure Protection GEK-106168E Electrical Connections Physical DescriptionCase Internal ConstructionDBF Breaker Failure Protection GEK-106168E CPU Board Operating TheoryMagnetic Module Power Supply Keyboard and DisplayPanel Insulation Tests Connections and Necessary EquipmentVisual Inspection Power Supply Relay SettingIndicators Communications IRIG-B Synchronizing Input InputsDigital Inputs Functions 1 50BF 1P Unit Test2 50BF 3P Unit Test Neutral Overcurrent Unit Test Internal ARC Test4 3P no I Function DBF Breaker Failure Protection GEK-106168E Timing Measurement Relay Measurement TestsCurrent Measurement DBF Breaker Failure Protection GEK-106168E CONNECTION-TO-GROUND and Disturbances Suppression InstallationMaintenance DBF Breaker Failure Protection GEK-106168E Keyboard and Display DBF General ElectricINF Menu TreeSET ACTModify Settings Protection Settings Group SET KEYView Settings Protection View Protection SettingsConfirm Setting OUT Range Level Valid RangeInformation Group INF KEY StatusControl Group ACT KEY SET DATE/TIMESingle KEY Menu Configuration Menu DBF Breaker Failure Protection GEK-106168E Figures Breaker Failure Logic 189C4114 Sheet External Connections 189C4114 Sheet Front View 226B7412 H9 Rear View 226B7412H10 Dimensions Diagram 226B6086H10 Panel Drilling 226B6086H10 RS232 Connection DBF Relay to PC