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ES3000 Digital Earth Resistance Tester

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Grounding Resistance Range

0.01Ω~3000Ω    Accuracy ±1.5%rdg±5dgt

Grounding Resistance Resolution


Grounding Voltage Range

0.01~100.0V AC        Accuracy ±1%rdg±3dgt

Grounding Voltage Resolution


Baseline conditions

23℃±5℃,below 75%rh   (Auxiliary ground resistance 100Ω ± 5%, voltage to ground <10V)


Earth resistance measurement, ground voltage measurement, low value resistance measurement 


8.4V lithium battery (built-in)


Controllable gray screen backlight, suitable for use in dim places

measurement mode

Precise three-wire measurement, simple two-wire measurement

Measurement methods

Grounding resistance: rated current change pole method, test current > 20mA (sine wave), 128Hz;

Ground Voltage: Average Rectification

Test frequency


Display mode

4-bit large LCD display, gray screen backlight

Measurement instructions

LED flashing indicator during measurement, LCD countdown display

LCD size


Instrument size


Test line length

3 strips:red 15m,yellow10m,green 5m each one

Simple test line

2strips:red 1.6m,green 1.6m each one

Auxiliary Grounding rod


Measure time

Ground voltage:about 2 times/sec; grounding resistance: about 5 seconds/time

Measurement times

5000 times or more

Line voltage

Measuring grounding voltage : AC 600V or less

USB interface

With USB interface, software monitoring, storage data can be uploaded to the computer, save and print

Communication Line

One USB communication line, 1.5m long

Data storage

500 groups, flashing “FULL” symbol indicates that the memory is full

Data review

Data review function: “MR” symbol display

Overflow display

Over-range overflow function: “OL” symbol display

Alarm function

Alarm when the measured value exceeds the alarm setting value

Battery voltage

Real-time display of battery power, reminding timely charging when battery voltage is low

Power consumption

Backlight:25mA Max


Standby: 25mA Max(Backlight off)


measuring:70mA Max(Backlight off)


Instrument: 2397g(含电池)


Test lines:861.5g(含简易测试线)


Auxiliary grounding rod: 425g(2根)


Instrument bag: 271g

Working temperature and humidity

-10℃~40℃;below 80%rh

Storage temperature and humidity

-20℃~60℃;below 70%rh

Overload protection

Grounding resistance:AC 280V/3 seconds between E-H and E-S ports

Insulation resistance

10MΩ以上(500V between circuit and housing)

Pressure resistance

AC 3700V/rms(between circuit and housing)

Electromagnetic properties

IEC61010-4-3,Wireless frequency electromagnetic field≤1V/m

Suitable for safety regulations

IEC61010-1、IEC1010-2-31、IEC61557-1,5、IEC60529(IP54)、Pollution level 2、CAT Ⅲ 300V

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