ETCR3000 Clamp On Ground Earth Resistance Tester Meter

Item No.:CR3000
The item is located in Sydney, Australia and we ship to you only 4-5 days, 3 years warranty. No shipping cost, no value
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1. Introduction

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.

ETCR3000 Digital Earth Resistance Tester has a unique function of wire resistance verification,more accurate on measuring on-site low value earth ground resistance, which can avoid error caused by resistance change due to prolonged usage of testing wire; avoid error caused by testing wire that is failed to be fully inserted into tester interface or by poor contact; avoid error caused by users' replacing or lengthening testing wires.

ETCR3000 Digital Earth Resistance Tester is composed of host machine, monitoring software, testing wires, communication wires and others. The large LCD display of host machine is with blue backlight and bar graph indicating that can be seen clearly. At the same time it can store 400 sets of data, fulfilling historical inquiry and online real-time monitoring through monitoring software, dynamic display, with the maximum, minimum, and mean indicators, with alarm settings and alarm indicator, and with the functions like historical data access, reading, preservation, report forms, printing and so on.

2. Technical Specifications




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 3mA 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


Earth Ground Voltage

Range:0V-600V AC;Resolution:1V;Accuracy:+1%rdg+3dgt

Tester Dimension


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 FULLicon to indicate storage is full

Data Hold

Data hold function: HOLDicon display

Data Read

Data read function: READ icon display

Overflow Display

Exceeding measuring range overflow function: OLicon display

Alarm Function

When measuring value exceeds alarm setting value, there is Toot-toot-toot alarm hint

Battery Voltage

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)


1443g(with batteries)

Working Temperature & Humidity

-10-40;below 80%rh

Storage Temperature & Humidity

-20-60;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.


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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