GE GEK 106168E manual Functions, 1 50BF 1P Unit Test

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6. ACCEPTANCE TESTS

6.9. FUNCTIONS

6.9.1 50BF 1P UNIT TEST

1.Change setpoint GENERAL/FUNCTION PERMIT/50BF 1P FUNCTION to PER.

2.Change setpoint GENERAL/FUNCTION PERMIT/50BF 3P FUNCTION to NO PER.

3.Change setpoint TABLE 1/FUNCTION PERMIT/3P No INT FUNCT to NO PER.

4.Change setpoint 50BF SETTINGS/Nº OUTPUT STAGES to 2.

5.The precision timer will be started at the same time than the corresponding contact converter (digital input) is energized. The timer stop input will be wired to any DBF contact under test, i.e. contact C4-D4.

6.Apply 2A to terminals A1-A2 (phase A).

7.Energize digital input CC1 PHASE A BF INITIATE (terminal C9-D10).

8.Check that after T1 time delay (1s), the following contacts are closed:

A12-B12

C4-D4

C5-D5

In case the relay under test includes an expansion board, check also the operation of the following contacts:

E1-F1

E2-F2

E3-F3

9.Check that after 2nd Stage Timer delay (2s), the following contacts are closed: C1-D1

C6-D6

C7-D7

and if the relay is equipped with an expansion board also the following contacts must be closed:

E4-F4

E5-F5

E6-F6

10.Repeat steps 7, 8, 9 and 10 using phase B current (B1-B2 terminals) and CC2 PHASE B BF INITIATE (D9- D10 terminals) to start the breaker failure operation.

11.Repeat steps 7, 8, 9 and 10 using phase C current (A3-A4 terminals) and CC3 PHASE C BF INITIATE (C10- D10 terminals) to start the breaker failure operation.

12.Change setpoint TABLE 1/50BF SETTINGS/Nº OUTPUT STAGES to 1.

13.Repeat steps 7 to 12 to check that in this case contacts C1-D1, C6-D6, C7-D7, E4-F4, E5-F5 and E6-F6 close at the same time than contacts: A12-B12, C4-D4, C5-D5 and E1-F1, E2-F2, E3-F3 (if an expansion board is available).

GEK-106168E

DBF Breaker Failure Protection

33

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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 General Description Protection∙ Breaker internal arc detection Monitoring AnalysisDBF Breaker Failure Protection GEK-106168E Digital Signal Input # Terminals Protection FunctionsOvercurrent Units Low-Level Overcurrent Breaker Failure Unit 50BF 1PReset of Latching Relays Ground Overcurrent Breaker Failure UnitBreaker Failure without current or very low current Breaker Arc Detection DeviceInternal Protection Status Signals Monitoring and Recording FunctionsMeasurement Associated Breaker StatusGroup Status Comment Optional Exp. Board Closed Optional Exp. Board Latched#1Optional Exp.Boar Latched#2 Closed Internal Communication Status Signals LED Left Column Right Column Circuit Breaker Breaking Capacity MonitoringAnalysis Functions BUILT-IN SELF-CHECKING UnitEvent Recorder OscillographyEvents to Trigger Oscillography Tables of Settings ControlTable Selection Active Table INPUT-1 INPUT-0Time Synchronization Configurable Inputs and OutputsFunction Outputs MAN-MACHINE Interface HMI Remote Communications Breaker Setting Group Active table setting groupCommon to all tables Range Default Step Oscillography Mask Independent for each table Range Default Step 50BF SettingsInternal Arc Settings Functions PermittedComments on Settings DBF Breaker Failure Protection GEK-106168E Ranges Models DBF Phase Model ListDBF GroundMechanical Technical CharacteristicsElectrical Standards CommunicationsTest Standard Class DBF Breaker Failure Protection GEK-106168E Physical Description CaseElectrical Connections Internal ConstructionDBF Breaker Failure Protection GEK-106168E Magnetic Module Operating TheoryCPU Board Power Supply Keyboard and DisplayVisual Inspection Connections and Necessary EquipmentPanel Insulation Tests Indicators Relay SettingPower Supply Communications Digital Inputs InputsIRIG-B Synchronizing Input Functions 1 50BF 1P Unit Test2 50BF 3P Unit Test 4 3P no I Function Internal ARC TestNeutral Overcurrent Unit Test DBF Breaker Failure Protection GEK-106168E Current Measurement Relay Measurement TestsTiming Measurement DBF Breaker Failure Protection GEK-106168E Maintenance InstallationCONNECTION-TO-GROUND and Disturbances Suppression DBF Breaker Failure Protection GEK-106168E Keyboard and Display DBF General ElectricMenu Tree SETINF ACTSettings Group SET KEY View Settings ProtectionModify 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