GE GEK 106168E manual Outputs

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2. OPERATION LOGIC

2.4.3.2 Outputs

The basic DBF system has 10 outputs as follows:

∙2 tripping contacts (A12-B12 and C1-D1)

∙1 Breaker failure pickup signaling (A11-B11)

∙1 Internal arc detection (C2-D2)

∙1 Equipment alarm (C3-D3)

∙5 configurable contacts (C4-D4 to C8-D8)

The optional expansion board for the DBF provides 6 additional latched contacts (E1-F1 to E6-F6). This outputs are not configurable and are assigned as follows:

∙3 tripping contacts (TRIP 1st Stage) (E1-F1 to E3-F3)

∙3 tripping contacts (TRIP 2nd Stage) (E4-F4 to E6-F6)

The configurable outputs can be programmed using logic based on the internal protection states (pick-ups, trips, alarms, etc.). The DBF has 66 different internal states, and these can be used to carry out logical operations NOT, AND and OR, which gives the unit a great flexibility.

The output configuration is done using different levels. At the first level it is possible to use AND gates of up to 16 signals. The output is incorporated into the states matrix so that it can then be used in other AND gates of up to 16 inputs. This process can continue until the 16 ANDs are used.

Once the AND gates have been configured it is possible to create a second level with OR gates of 16 inputs limited to the established groups of bytes, and whose logical outputs are assigned to physical outputs of the unit. This means that we can configure the physical outputs with any internal signal from the status or any combination of them made by means of the AND logic gates.

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DBF Breaker Failure Protection

GEK-106168E

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Contents GE Power Management 3KRQHHVFULSWLRQ0DQXDO*RI.\RXUFRGHTXHVWLRQ Ruvxjjhvwlrqd Page Table of Contents Installation and Maintenance Rear View 226B7412 Sheet List of FiguresDBF Breaker Failure Protection GEK-106168E Protection General Description∙ Breaker internal arc detection Monitoring AnalysisDBF Breaker Failure Protection GEK-106168E Protection Functions Digital Signal Input # TerminalsOvercurrent Units Low-Level Overcurrent Breaker Failure Unit 50BF 1PGround Overcurrent Breaker Failure Unit Reset of Latching RelaysBreaker Failure without current or very low current Breaker Arc Detection DeviceMonitoring and Recording Functions Internal Protection Status SignalsMeasurement Associated Breaker StatusGroup Status Comment Optional Exp. Board Optional Exp. Board Latched#1 ClosedOptional Exp.Boar Latched#2 Closed Internal Communication Status Signals Circuit Breaker Breaking Capacity Monitoring LED Left Column Right ColumnBUILT-IN SELF-CHECKING Unit Analysis FunctionsEvent Recorder OscillographyEvents to Trigger Oscillography Control Tables of SettingsTable Selection Active Table INPUT-1 INPUT-0Configurable Inputs and Outputs Time SynchronizationFunction Outputs MAN-MACHINE Interface HMI Remote Communications Active table setting group Breaker Setting GroupIndependent for each table Range Default Step 50BF Settings Common to all tables Range Default Step Oscillography MaskInternal Arc Settings Functions PermittedComments on Settings DBF Breaker Failure Protection GEK-106168E Model List Ranges Models DBF PhaseDBF GroundTechnical Characteristics MechanicalElectrical Communications StandardsTest Standard Class DBF Breaker Failure Protection GEK-106168E Case Physical DescriptionElectrical Connections Internal ConstructionDBF Breaker Failure Protection GEK-106168E Operating Theory Magnetic ModuleCPU Board Keyboard and Display Power SupplyConnections and Necessary Equipment Visual InspectionPanel Insulation Tests Relay Setting IndicatorsPower Supply Communications Inputs Digital InputsIRIG-B Synchronizing Input 1 50BF 1P Unit Test Functions2 50BF 3P Unit Test Internal ARC Test 4 3P no I FunctionNeutral Overcurrent Unit Test DBF Breaker Failure Protection GEK-106168E Relay Measurement Tests Current MeasurementTiming Measurement DBF Breaker Failure Protection GEK-106168E Installation MaintenanceCONNECTION-TO-GROUND and Disturbances Suppression DBF Breaker Failure Protection GEK-106168E DBF General Electric Keyboard and DisplaySET Menu TreeINF ACTView Settings Protection Settings Group SET KEYModify Settings Protection View Protection SettingsConfirm Level Valid Range Setting OUT RangeStatus Information Group INF KEYSET DATE/TIME Control Group ACT KEYSingle 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