GE GEK 106168E manual Relay Measurement Tests, Current Measurement, Timing Measurement

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6. ACCEPTANCE TESTS

6.10. RELAY MEASUREMENT TESTS

6.10.1. CURRENT MEASUREMENT

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 GENERAL/FUNCTION PERMIT/3P No INT FUNCT to NO PER.

4.Change setpoint TABLE 1/50BF SETTINGS/PH LOSET PICKUP to 5A (1A in relays with 1A nominal current).

5.Change setpoint TABLE 1/50BF SETTINGS/1 PHASE TIMER T1 to 0.050s.

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

7.Energize digital input 3POLE BF INITIATE (terminals E7-E8 for relays with expansion board). If the relay has not expansion board, energize CC1 PHASE A BF INITIATE.

8.Increase current applied on A1-A2 (phase A) until contact A12-B12 closes. Check that the operating value of the current is within ± 5% of setpoint (5A for relays with 5A nominal current and 1A for 1A nominal current relays).

9.Repeat step 8 applying current on B1-B2 (phase B). If the relay has not an expansion board energize CC2

PHASE B BF INITIATE.

10.Repeat step 8 applying current on A3-A4 (phase C). If the relay has not an expansion board energize CC3

PHASE C BF INITIATE.

6.10.2. TIMING MEASUREMENT

1.Connect the stop input of the precision timer to the A12-B12 output (trip 1).

2.Apply the operating current level of the previous test to terminals A1-A2 (phase A).

3.Simultaneously energize the digital input 3POLE BF INITIATE and the starting input of the precision timer.

4.After 1 PHASE TIMER T1 (0.050s) the relay will trip.

5.Verify that the actual operating time is equal to 1 PHASE TIMER T1 (accuracy ± 5% or 30 ms, whichever is greater).

GEK-106168E

DBF Breaker Failure Protection

37

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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 Optional Exp.Boar Latched#2 Closed Optional Exp. Board Latched#1Closed 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-0Function Configurable Inputs and OutputsTime Synchronization 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 GroundElectrical Technical CharacteristicsMechanical Test Standard Class CommunicationsStandards DBF Breaker Failure Protection GEK-106168E Physical Description CaseElectrical Connections 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 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