ETCR3000 Digital Ground Resistance Tester

ETCR3000Digital Ground Resistance Tester-----------------------------------------------------------------------------------------------------------------------------. Technical Specifications Model ETCR3000FunctionEarth resistance measurement, Earth voltage measurement, Low resistance measurement Power SupplyDC 9V (Zi-Mn dry battery R14S 1.5V 6 PCS, continuous standby for 300 hours ) Measuring ModePrecise 3-pole measurement, simple 2-pole measurement Measuring MethodEarth ground resistance: constant current change-pole method, measurement current 3mA Max,820Hz; Voltage to ground: average value rectification Data ModeAverage value, maximum, minimum Wire Resistance VerificationAvoid error caused by testing wire such as failed to be fully inserted into tester interface or by poor contact or by user's replacing or lengthening testing wires, making it more accurate for earth ground resistance measurement. Display Mode4-digital super-large LCD display, blue screen backlight, LCD dimension: 128mm×75mm; Display field:124mm×67mm Measuring IndicationDuring measurement, LED flash indicator, LCD count down display Earth Ground ResistanceRange:0.01Ω 2000Ω; Resolution:0.01Ω; Accuracy:±1%rdg±3dgt Earth Ground VoltageRange:0V 600V AC; Resolution:1V; Accuracy:±1%rdg±3dgt Tester DimensionLWH:215mm×190mm×95mm Testing WiresThree wires: each for Red 20m, Yellow 10m, and Green 5m Simple Testing Wire2 wires: each for Red 1.6m and Green 1.6m Auxiliary Earthing Rod2 PCS: Φ10mm×150mm Measuring RateEarth voltage measurement: 3 times/second; Earth resistance: 5 seconds/time Measuring TimesOver 5000 times (20Ω range measuring 10Ω for one time and repeat after 25 seconds) Circuit VoltageMeasuring voltage to ground: measuring below AC 600V RS232 InterfacePossess RS232 interface, software supervision, storage data can be uploaded to computer, preserved and printed. Communication WireOne piece of RS232 communication wire, with length 1.5m Data Storage400 sets, flash display "FULL"icon to indicate storage is full Data HoldData hold function:"HOLD"icon display Data ReadData read function: "READ" icon display Overflow DisplayExceeding measuring range overflow function: "OL"icon display Alarm FunctionWhen measuring value exceeds alarm setting value, there is "Toot-toot-toot"alarm hint Battery VoltageWhen battery voltage decreases to about 7.8V, battery voltage low icon" "will display, reminding to replace battery. Power ConsumptionBacklight:25mA Max; Standby: 25mA Max(Backlight shut off);Measurement:70mA Max(Backlight shut off) Weight1443g(with batteries) Working Temperature & Humidity-10°C 40°C;below 80%rh Storage Temperature & Humidity-20°C 60°C;below 70%rh Overload ProtectionMeasuring earth ground resistance: between each interfaces of E-P,E-C, AC 280V/3 seconds Insulation ResistanceOver 10MΩ(between circuit and enclosure it is 500V) Withstanding VoltageAC 3700V/rms (Between circuit and enclosure) Electromagnetic FeaturesIEC61010-4-3,Wireless frequency electromagnetic field≤1V/m Protection TypeIEC61010-1,IEC1010-2-31,IEC61557-1,5,IEC60529(IP54),CATIII 300V Pollution etc. AccessoriesTester:1PC; Earthing Rod:2PCS; Testing Wire:3PCS; Simple testing wire:2PCS; RS232 Com-cable:1PC; Software disk:1PC; Tester bag:1PC