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Fluke 1625 Stakeless Earth/Ground Resistance Testing, Principle of Operation, Footing ground

Models: 1625

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Stakeless Earth/Ground Resistance Testing

Principle of Operation

Lightning

Protection

Footing ground

Framework

edw066.eps

Page 79

Image 79

Fluke 1625 Stakeless Earth/Ground Resistance Testing, Principle of Operation, Lightning Protection, Footing ground

Contents

Earth/Ground Tester 1625Users Manual 11/99 LIMITED WARRANTY AND LIMITATION OF LIABILITYTitle Table of ContentsUsers Manual 1625Description of Displays Description of Displays List of TablesModels and Accessories Electrical Measurement SpecificationsUsers Manual 1625List of Figures Users Manual 1625Introduction Earth/Ground TesterFigure 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 Checking the Scope of Delivery SetupQualified Staff UnpackingGeneral Additional Accessories1625 Earth/Ground Tester AssemblyDescription of Functions AssemblyMeasurement of Interference Frequency FST Measurement of Interference Voltage UST1625 Low Resistance Measurement RF Measurement of Earthing Resistance RESelective Measurement of Earthing Resistance RE A Resistance Measurement R~LO-BAT Specifications1625 Earth/Ground Tester SpecificationsMax voltage 1625Specifications Measurement of Interference Voltage DC + AC USTMeasurement of Interference Frequency F ST Earthing Resistance R EParts of 1625Users Manual cordance withSpecifications x 100%fiducial value RH RS + 2000Ω ⋅1.25 ⋅10−6% + 5digitsR H/R E= 1625edw005.eps Earth/Ground Tester Selective Measurement of the Earthing Resistance REARH RS + 2000Ω ⋅1.25 ⋅10−6 % + 5digits Specificationswith a transformer Resistance Measurement R~1625 Max. interference currentSpecifications Resistance Measurement RFEarth/Ground Tester 1625 Compensation of Lead Resistance RKEarth/Ground Tester Description of the Operating ElementsDescription of the Operating Elements 1625 W AttentionW Warning W WarningEarth/Ground Tester Description of Display ElementsDescription of the Operating Elements 1625 Procedure of MeasurementsW Warning W Warningb Stand by disable POWER ON FunctionsProcedure of Measurements a Standard mode1625 Operatione Activation of display illumination Earth/Ground Tester Procedure of MeasurementsSWITCHOVER SWITCHFunction Control LoopSetting Range 16252pole Procedure of Measurementssee Compensation of Earth Electrode Connecting Lead Earth/Ground TesterInside the measuring loop parameters cannot be changed Measuring LoopChecking of Correct Measuring Connection Socket Alloca- tion 1625Earth/Ground Tester Safety Control MeasurementsMeasurement of Interference - Voltages and Frequen- cies Procedure of Measurements1625 Measurement of Earthing ResistancesFigure 7. Measurement of Interference - Voltages and Frequencies Figure 8. Earthing Resistances Measurement - Method 3-pole/4-pole Measurement of Earthing ResistanceProcedure of Measurements Earth/Ground Tester1625 Remarks for the setting of earth spikesTime average measurement Procedure of Measurements3-pole measurement with longer earth electrode connecting leads Earth/Ground TesterMeasurement of Single Earth Electrode Resistances in Mesh Operated Earthing Systems Using Selective Clamp Methodtr . IZ Fix clip-on transformer around the earth electrode to be measured 3-pole/4-pole Measurement of Single Earth Electrode Re- sistancesProcedure of Measurements Earth/Ground Tester1625 Remarks for the Setting of Earth Spikes3-pole Measurement with Longer Earth Electrode Connect- ing Leads Time Average MeasurementProcedure of Measurements Measurements on High Voltage PylonsEarth/Ground Tester 1625 R EEarth/Ground Tester Procedure of MeasurementsNotices for the setting of earth spikes R ETime average measurement Correcting Clip-on Transformer ErrorsMeasuring Earthing Impedance with 55 Hz R 1625Procedure of Measurements R E withclip − ontransformerR E withoutclip − onTransfprmer trnew = trold ⋅1625 Compensation of Earth Electrode Connecting Lead100% ⋅ 0.192Ω = +19.5% 0.983Ω trnew = 1000 ⋅ 10..175983 =Procedure of Measurements Measurement of Soil ResistivityEarth/Ground Tester 1625 ρ E = 2π .a.RESoil Procedure of MeasurementsEarth/Ground Tester restivityResistance Measurement R~ Measurement of Resistances1625 Earth/Ground Tester Resistance Measurement RFProcedure of Measurements W WarningEvaluation of measured value Compensation of Measuring Lead ResistanceW Warning 1625Procedure of Measurements Changing of All Data Settings with Personalized CODEEarth/Ground Tester Users Manual 1625Function Procedure of Measurements Storing a CodeEarth/Ground Tester 1625 Deleting a CodeDescription of Displays Description of DisplaysLO-BAT Earth/Ground Testeredw033.eps 1625Users Manual edw031.epsedw038.eps Earth/Ground TesterDescription of Displays edw037.epsage meas 1625Users Manual compensaedw046.eps No reactions to button control etcEarth/Ground Tester Description of DisplaysUsers Manual Care and Maintenanceservice 1625Care and Maintenance Replacing BatteriesEarth/Ground Tester 1625 RecalibrationStorage ServiceStakeless Earth/Ground Resistance Testing Stakeless Earth/Ground Resistance TestingAppendix A IntroductionDeveloped, designed and manufactured to Specifications1625 3 pole Order No. EI-1625Principle of Operation Principle of OperationPurpose Stakeless Earth/Ground Resistance TestingUsers Manual = R X +1625 SourcePrinciple of Operation Stakeless Earth/Ground Resistance Testing1625 OperationUse only current transformers referred to in this manual Principle of Operation Settings on the TesterStakeless Earth/Ground Resistance Testing In this particular mode the values of RH and RS have no meaning1625 ApplicationsFooting ground Stakeless Earth/Ground Resistance TestingPrinciple of Operation Lightning Protection1625 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 month Earthing ResistancePrinciple of Operation July1625 Measuring MethodEarthing Resistance The Potential Gradient AreaPrinciple of Operation 1625 Earthing Resistance Earth Impedance R* on High Voltage Transmission LinesPrinciple of Operation Users Manual 1625