ETCR3000 0.01Ω-2000Ω Digital Earth Ground Resistance Earth Resistance Tester

ETCR3000 Digital Earth Resistance Tester is specially designed and manufactured for field measurement, adopting the latest digital and micro-processing technology, 3-pole or 2-pole method for earth resistance measurement, with a unique function of wire resistance verification, anti-interference capability and the ability to adapt to the environment, to ensure high precision, high stability and reliability for prolonged measure, which is widely used in electric power, telecommunications, meteorology, oil field, construction, lightning protection, industrial electrical equipment and other earth ground resistance measurement.

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Feature of ETCR3000

1. Concise and clear connection port design. E interface is ground electrode. P (S) interface is voltage electrode. C (H) interface is current electrode.
2. Multi-button design, including data save button, function button, data clear button. Easy to operate.
3. Large high‑definition display has back light function and the function of measurement status display and measurement data display.
4. Four‑gear design, V voltage test, 20Ω small resistance, 200Ω medium resistance, 2000Ω high resistance.
5. It can test earth resistance of various earth systems, complete functions, higher accuracy, more convenient.

Specification of ETCR3000

Model ETCR3000
Function Earth resistance measurement, Earth voltage measurement, Low resistance measurement
Power Supply DC 9V (Zi-Mn dry battery R14S 1.5V 6 PCS, continuous standby for 300 hours )
Measuring Mode Precise 3-pole measurement, simple 2-pole measurement
Measuring Method Earth ground resistance: constant current change-pole method, measurement current 20mA Max,820Hz; Voltage to ground: average value rectification
Data Mode Average value, maximum, minimum
Wire Resistance Verification Avoid 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 Mode 4-digital super-large LCD display, blue screen backlight, LCD dimension: 128mm×75mm; Display field:124mm×67mm
Measuring Indication During measurement, LED flash indicator, LCD count down display
Earth Ground Resistance Range:0.01Ω~2000Ω; Resolution:0.01Ω; Accuracy:±2%rdg±3dgt
Earth Ground Voltage Range:0V~600V AC; Resolution:1V;  Accuracy:±2%rdg±3dgt
Tester Dimension LWH:215mm×178mm×83mm
Testing Wires Three wires: each for Red 20m, Yellow 10m, and Green 5m
Simple Testing Wire 2 wires: each for Red 1.6m and Green 1.6m
Auxiliary Earthing Rod 2 PCS: Φ10mm×150mm
Measuring Rate Earth voltage measurement: 3 times/second; Earth resistance: 5 seconds/time
Measuring Times Over 5000 times (20Ω range measuring 10Ω for one time and repeat after 25 seconds)
Circuit Voltage Measuring voltage to ground: measuring below AC 600V
RS232 Interface Possess RS232 interface, software supervision, storage data can be uploaded to computer, preserved and printed.
Communication Wire One piece of RS232 communication wire, with length 1.5m
Data Storage 400 sets, flash display “FULL”icon to indicate storage is full
Data Hold Data hold function:”HOLD”icon display
Data Read Data read function: “READ” icon display
Overflow Display Exceeding measuring range overflow function: “OL”icon display
Alarm Function When measuring value exceeds alarm setting value, there is “Toot-toot-toot”alarm hint
BatteryVoltage When battery voltage decreases to about 7.8V, battery voltage low icon ” “will display, reminding to replace battery.
Power Consumption Backlight:25mA Max; Standby: 25mA Max(Backlight shut off);Measurement:70mA Max(Backlight shut off)
Weight 1443g(with batteries)
Working Temperature & Humidity -10°C~40°C;below 80%rh
Storage Temperature & Humidity -20°C~60°C;below 70%rh
Overload Protection Measuring earth ground resistance: between each interfaces of E-P,E-C, AC 280V/3 seconds
Insulation Resistance Over 10MΩ(between circuit and enclosure it is 500V)
Withstanding Voltage AC 3700V/rms (Between circuit and enclosure)
Electromagnetic Features IEC61010-4-3,Wireless frequency electromagnetic field≤1V/m
Protection Type IEC61010-1,IEC1010-2-31,IEC61557-1,5,IEC60529(IP54),CAT III 300V  Pollution etc.
Accessories Tester:1PC; Earthing Rod:2PCS;  Testing Wire:3PCS; Simple testing wire:2PCS; RS232 Com-cable:1PC; Software disk:1PC; Tester bag:1PC

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