GDHLSeriesLowResistanceTester1.1GeneralintroductionGDHLseriesadoptdigitalcircuittechniqueandtheswitchescircuittechniquecreationandisaspecialinstrumentusedforthecontactresistancemeasurementandthelineloopresistancemeasurementofswitchcontrolequipments.Thetestcurrentadopts100AdirectcurrentrecommendedbythenationalstandardGB763andcandirectlymeasurethelineloopresistanceorcontactresistanceunderthecircumstanceofthe100A,200A,300A,400A,500Aor600Acurrent,anddirectmanifestation.Italsocans***e100groupsofdataatmostintheinstrumentanduploadtoPCthroughRS232interface.Theinstrumenthasaccuracymeasurement,stablefunctionandissuitableforelectricpowerandpowersupplysectortomaintainhighvoltageswitchonthespotandtestthelineloopresistanceinthehighvoltageswitchfactory.1.2Funtion11minutestandardtest2Rapidtest3Resultprint4UploaddatatoPC1.3Maintechniqueindex:1.Measuringrange:0-1999.9μΩResolution:0.1μΩ2.Measuringcurrent:DC200Aor100Acanbechoosed.3.Measuringprecision:0.5class4.Displaymode:LCD5.S***e100groupsofdata6.Workmethod:succession7.Ratedpowersupply:AC220V8.Temperature:-10°C~+40°CRelativehumidity<80%)