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Fluke 1625 user manual Compensation of Lead Resistance RK

Models: 1625

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1625

Users Manual

Compensation of Lead Resistance (RK)

Compensation of lead resistance (RK) can be switched on in functions RE 3pole, RE 4pole A, R~ , and R F 2pole

Formation of measured value:

Rdisplay = Rmeasured - Rcompensated*

*Value of setpoint entry RK = 0.000Ω, vari- able from 0.000…29.99 Ω by means of measuring adjustment.

Page 28

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Fluke 1625 user manual Compensation of Lead Resistance RK

Contents

Earth/Ground Tester 1625Users Manual LIMITED WARRANTY AND LIMITATION OF LIABILITY 11/99Table of Contents TitleUsers Manual 1625Description of Displays List of Tables Models and AccessoriesElectrical Measurement Specifications Description of Displays1625 Users ManualList of Figures 1625 Users ManualEarth/Ground Tester IntroductionFigure 1 displays the Fluke 1625 Earth/Ground Tester 1625Figure 1. Fluke 1625 Earth/Ground Tester Models and Accessories Models and AccessoriesEarth/Ground Tester W Warning Safety Instructions1625 Setup Qualified StaffUnpacking Checking the Scope of DeliveryGeneral Additional Accessories1625 Assembly Description of FunctionsAssembly Earth/Ground TesterMeasurement of Interference Frequency FST Measurement of Interference Voltage UST1625 Measurement of Earthing Resistance RE Selective Measurement of Earthing Resistance RE AResistance Measurement R~ Low Resistance Measurement RFLO-BAT Specifications1625 Specifications Earth/Ground Tester1625 Max voltageMeasurement of Interference Voltage DC + AC UST Measurement of Interference Frequency F STEarthing Resistance R E Specifications1625 Users Manualcordance with Parts ofx 100% fiducial valueRH RS + 2000Ω ⋅1.25 ⋅10−6% + 5digits SpecificationsR H/R E= 1625edw005.eps Selective Measurement of the Earthing Resistance REA RH RS + 2000Ω ⋅1.25 ⋅10−6 % + 5digitsSpecifications Earth/Ground TesterResistance Measurement R~ 1625Max. interference current with a transformerSpecifications Resistance Measurement RFEarth/Ground Tester Compensation of Lead Resistance RK 1625Earth/Ground Tester Description of the Operating ElementsDescription of the Operating Elements W Attention W WarningW Warning 1625Earth/Ground Tester Description of Display ElementsDescription of the Operating Elements Procedure of Measurements W WarningW Warning 1625POWER ON Functions Procedure of Measurementsa Standard mode b Stand by disable1625 Operatione Activation of display illumination Procedure of Measurements SWITCHOVERSWITCH Earth/Ground TesterControl Loop Setting Range1625 FunctionProcedure of Measurements see Compensation of Earth Electrode Connecting LeadEarth/Ground Tester 2poleMeasuring Loop Checking of Correct Measuring Connection Socket Alloca- tion1625 Inside the measuring loop parameters cannot be changedSafety Control Measurements Measurement of Interference - Voltages and Frequen- ciesProcedure of Measurements Earth/Ground Tester1625 Measurement of Earthing ResistancesFigure 7. Measurement of Interference - Voltages and Frequencies 3-pole/4-pole Measurement of Earthing Resistance Procedure of MeasurementsEarth/Ground Tester Figure 8. Earthing Resistances Measurement - MethodRemarks for the setting of earth spikes 1625Procedure of Measurements 3-pole measurement with longer earth electrode connecting leadsEarth/Ground Tester Time average measurementMeasurement of Single Earth Electrode Resistances in Mesh Operated Earthing Systems Using Selective Clamp Methodtr . IZ 3-pole/4-pole Measurement of Single Earth Electrode Re- sistances Procedure of MeasurementsEarth/Ground Tester Fix clip-on transformer around the earth electrode to be measuredRemarks for the Setting of Earth Spikes 3-pole Measurement with Longer Earth Electrode Connect- ing LeadsTime Average Measurement 1625Procedure of Measurements Measurements on High Voltage PylonsEarth/Ground Tester R E 1625Procedure of Measurements Notices for the setting of earth spikesR E Earth/Ground TesterCorrecting Clip-on Transformer Errors Measuring Earthing Impedance with 55 Hz R1625 Time average measurementR E withclip − ontransformer R E withoutclip − onTransfprmertrnew = trold ⋅ Procedure of MeasurementsCompensation of Earth Electrode Connecting Lead 100% ⋅ 0.192Ω = +19.5% 0.983Ωtrnew = 1000 ⋅ 10..175983 = 1625Procedure of Measurements Measurement of Soil ResistivityEarth/Ground Tester ρ E = 2π .a.RE 1625Procedure of Measurements Earth/Ground Testerrestivity SoilResistance Measurement R~ Measurement of Resistances1625 Resistance Measurement RF Procedure of MeasurementsW Warning Earth/Ground TesterCompensation of Measuring Lead Resistance W Warning1625 Evaluation of measured valueProcedure of Measurements Changing of All Data Settings with Personalized CODEEarth/Ground Tester Users Manual 1625Function Procedure of Measurements Storing a CodeEarth/Ground Tester Deleting a Code 1625Description of Displays LO-BATEarth/Ground Tester Description of Displays1625 Users Manualedw031.eps edw033.epsEarth/Ground Tester Description of Displaysedw037.eps edw038.eps1625 Users Manualcompensa age measNo reactions to button control etc Earth/Ground TesterDescription of Displays edw046.epsCare and Maintenance service1625 Users ManualCare and Maintenance Replacing BatteriesEarth/Ground Tester Recalibration StorageService 1625Stakeless Earth/Ground Resistance Testing Appendix AIntroduction Stakeless Earth/Ground Resistance TestingSpecifications 16253 pole Order No. EI-1625 Developed, designed and manufactured toPrinciple of Operation PurposeStakeless Earth/Ground Resistance Testing Principle of Operation= R X + 1625Source Users ManualStakeless Earth/Ground Resistance Testing Principle of Operation1625 OperationUse only current transformers referred to in this manual Settings on the Tester Stakeless Earth/Ground Resistance TestingIn this particular mode the values of RH and RS have no meaning Principle of OperationApplications 1625Stakeless Earth/Ground Resistance Testing Principle of OperationLightning Protection Footing ground1625 Description of DisplaysUsers Manual Principle of Operation Stakeless Earth/Ground Resistance Testingedw069.eps Appendix B Earthing ResistanceIntroduction Principle of Operation Earthing Resistancefor concrete mixtures 1 7 the values have to be increased by 24 % 1625 Soil Resistivity ρEA = 1 m Earthing Resistance Principle of OperationJuly monthMeasuring Method 1625Earthing Resistance The Potential Gradient AreaPrinciple of Operation 1625 Earthing Resistance Earth Impedance R* on High Voltage Transmission LinesPrinciple of Operation 1625 Users Manual