Insulation Resistance Tester, Multifunctional Ground Resistance Tester 0.00Ω～30.00K Double Clamp Ground Resistance Tester Soil Resistance Tester 0.00ΩM～9999KΩM ES3002

ES3002 double-clamp multi-function ground resistance tester, also known as double-clamp ground resistance tester, is an advanced ground resistance tester that integrates multiple measurement methods.Large-caliber current clamp design adopts double-jaw measurement technology, no need to lay auxiliary ground, no need to isolate grounding body and equipment, and realize online measurement. It is widely used in telecommunications, electric power, meteorology, computer rooms, oil fields, power distribution lines, tower transmission lines, gas stations, factory grounding grids, lightning rods, etc.Specification:Function: Grounding resistance, soil resistivity, DC resistance, grounding voltage, AC currentEnvironmental temperature and humidity: 23℃±5℃, below 75%rh<;20V (should be avoided)<;2A (should be avoided)Measuring the R electrode spacing a:> 5dMeasured ρ electrode spacing a:> 20hPower supply: DC 6V 4.5Ah lead-acid battery, standby for more than 100 hoursBacklight: Controllable backlight, suitable for use in dim placesMeasurement method: accurate four-wire, three-wire measurement, simple two-wire measurement, selection method, double clamp method to measure ground resistanceMeasurement method: 2.3.4 Line method measurement: polarization method, measuring current 20mA MaxSoil resistivity: four-pole methodSelective measurement: polarization method, measuring current 20mA MaxDouble clamp method: non-contact mutual inductance measurement method, test current 1mA MaxDC resistance: polarization methodAC current: average rectification (clamping)Ground voltage: average rectification (between S-ES interfaces)Test voltage waveform: sine waveTest frequency: 128HzShort circuit test current: AC 20mA maxOpen circuit test voltage: AC 28V maxElectrode spacing range: 1m～100mDisplay mode: 4-digit large LCD display with backlightMeasurement description: LED flashing indication during measurementLCD size: 111mm×68mmLCD display field: 108mm×65mmInstrument size: length/width/height: 277.2mm×227.5mm×153mmFixture size: L/T/H: 101mm×27mm×214mm4 test lines: red 15m, black 15m, yellow 10m, green 10m eachTwo simple test lines: yellow 1.5m, green 1.5m eachAuxiliary ground rod 4PCS: φ10mm×200mmCurrent clamp 2PCS: φ4 mm banana Diameter of current clamp: φ50mmCurrent clamp lead length: 2mMeasuring time: AC current: about 2 times/sec;Ground voltage: about 2 times/sec;Grounding resistance, soil resistivity: about 7 seconds/timeLine voltage measurement below AC100V (ground voltage measurement function cannot be used to measure mains)USB interface With USB interface, the stored data can be uploaded to the computer, saved and printedCommunication line A USB communication line, 1.5m longData storage: 500 groups, "MEM" storage means, flashing "FULL" symbol means the memory is fullData view: data view function: "MR" symbol displayOverflow display: over-range overflow function: "OL" symbol displayCurrent clamp low current indication When selecting method or double clamp method for measurement, when the current signal received by current clamp A is less than 0.5 mA, the symbol “” is displayed. At this time, the clamp direction is that the current clamp A should be checked.The interference test automatically recognizes the interference signal, and the "NOISE" symbol indicates when the interference voltage is higher than 5V<;50kΩ; Rs max = 3kΩ +100R 50kΩ)Alarm function Alarm when the measured value exceeds the alarm set valueThe battery voltage displays the battery power in real time, and the battery voltage is low to remind you to charge in timeAutomatic shutdown "APO" means that it will automatically shut down after 15 minutesPower consumption standby: 40mA Max (backlight off)Turn on the backlight: 43mA MaxMeasurement: 120mA Max (backlight off)Weight meter: 2450g (including battery)Current clamp: 940g (2PCS)Test line: 1300g (including simple test line)Auxiliary ground rod: 850g (4PCS)Working temperature and humidity -10℃～40℃; below 80%rhStorage temperature and humidity -20℃～60℃; below 70%rh

• -2, 3, 4 wire method grounding resistance, double clamp method, selection method, DC resistance, soil resistivity, AC current, ground voltage measurement.
• -USB interface, data upload function, alarm function, data storage 500 groups, 2, 3, 4 lines
• -Grounding resistance range: 0.00Ω～30.00KΩ
• -Select method to measure ground resistance range: 0.00Ω-3000Ω
• -Soil resistivity range: 0.00ΩM～9999KΩM
• -AC current: 0.0mA～1000A Voltage range: 0～100V, test frequency: 128Hz