Extech Instruments 382357 Dokumentacja Strona 1

USERMANUAL GroundResistanceClamp‐OnTester MODEL382357

382357‐EU‐ENV2.42/1310ReferenceTestLoopThereferencetestloopisasetofresistorsthatprovidesameanstochecktheperformanceofthemet

382357‐EU‐ENV2.42/1311MaintenanceGeneralCareStorethegroundresistancetesterandreferenceloopinitscasewhennotinuse.Adampclothm

382357‐EU‐ENV2.42/1312SpecificationsGeneralSpecificationsResistanceTestFrequency: 3.333kHz(15mVrmsapprox.)MaxConductorsize 23mm(0

382357‐EU‐ENV2.42/1313GroundResistance(Autorange)SpecificationsRange Resolution Accuracy(ofreading)0.025to0.250 0.002 ±(1.5%+0.

382357‐EU‐ENV2.42/132IntroductionCongratulationsonyourpurchaseofExtech’s382357GroundResistanceTester.ThisClamp‐ondeviceallowstheu

382357‐EU‐ENV2.42/133Description1. JawAssembly2. HoldButton3. RotarySelectorSwitch4. LCDDisplay5. RecordButton6. ▼(decrement)B

382357‐EU‐ENV2.42/134OperationNote:Ensurethatthejawsarefullyclosedbeforetesting.Note:DONOTclampontoanyconductororopenthecl

382357‐EU‐ENV2.42/135HighandLowAlarm1. Turnthemeteronbymovingtherotaryswitchtothe)))position.2. PresstheFUNCbuttontoview

382357‐EU‐ENV2.42/136RecallingStoredData1. PresstheFUNCbuttonfourtimesuntilthe“NO.”symbolisdisplayedontheLCD.Thecurrentrecor

382357‐EU‐ENV2.42/137MeasurementPrinciplesTypicalmulti‐groundeddistributionsystemIftheparallelgroundresistances,R1,R2,R3,et

382357‐EU‐ENV2.42/138ApplicationsTelephone‐ElectricalGroundRods1. Removeanyprotectivecoveringfromthegroundconductor2. Turnthemete

382357‐EU‐ENV2.42/139ServiceEntranceNote:Multiplegroundrods,multiplegroundsi.e.groundrod(s)andwaterpipegrounds,oracombinationma