Ground Earth Resistance Tester

The RD3000B ground earth resistance testser offers precise on-site measurements in various applications, adhering to new lightning protection standards.

Model: RD3000B

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OVERVIEW

The RD3000B ground earth resistance tester was developed based on the latest lightning protection ground resistance detection standards. It is suitable for multi-scenario measurements and can accurately measure ground resistance, soil resistivity, ground voltage, and AC voltage. The instrument has a 20mA test current output capability, integrates digital and microprocessing technology, and supports precise 4-wire, 3-wire, and simple 2-wire methods for measuring ground resistance. By introducing FFT (Fast Fourier Transform) and AFC (Automatic Frequency Control) technology, the tester can automatically identify interference and optimize the measurement frequency, effectively reduce the impact of interference, and ensure the accuracy of ground resistance measurement values. Its anti-interference ability and environmental adaptability are remarkable, and the repeated test results show high consistency. It can maintain high precision, stability, and reliability for a long time. It is widely used in related parameter measurement in power, telecommunications, meteorology, oil fields, construction, lightning protection, and industrial electrical equipment.

CHARACTERISTIC

1.The central unit features a toolbox design. It is made of polypropylene plastic with a new type of composite filler added for one-time injection molding, which endows it with low density, high strength, rigidity, hardness, wear resistance, heat resistance, and good insulation performance.
2. The box can withstand a pressure of about 200kg, and this property ensures high precision, stability, and reliability during various environmental tests.
3. Extra-large LCD with backlight and bar graph indication, clear at a glance.
4. The ground earth resistance tester stores 300 sets of data, and data software can perform historical data reading, viewing, saving, reporting, printing, and other functions.

For more information about ground resistance testers, please click More.
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FAQ

Q： What meter is used to measure earth resistance?

A： A ground earth resistance tester measures ground resistance, ensuring electrical safety. It employs methods like Fall-of-Potential or Clamp-On Testing, which are essential for compliance.

Q： How do you use an earth-ground resistance tester?

A： To use an Earth Tester:

1. Locate grounding rods.
2. Insert probes into the ground near rods.
3. Clip tester wires to the rods.
4. Turn on the tester and press “Start.”
5. Read and interpret the displayed resistance.
6. Document the results for reference.

Q： Why do we test earth resistance?

A： Earth resistance testing ensures safety by confirming a low-resistance path for fault currents, preventing electrical hazards and equipment damage.

CHARACTERISTIC

Grounding Resistance Analyzer For Industrial Use

Model	RD3000B
Function	Ground resistance, soil resistivity test; ground voltage, AC voltage test
Power Source	DC 11.1V 2.6Ah rechargeable lithium battery
Backlight	Controllable white screen backlight, suitable for dark places
Measurement Mode	Precision 4-wire, 3-wire measurement, simple 2-wire measurement of ground resistance
Measurement Method	Grounding resistance: rated current changing pole method, measuring current 20mA Max
	Soil resistivity: four-pole method (Winner method)
	Voltage to the ground: average rectification (between P (S) -ES interface)
Measuring Range	Measure the ground resistance (R) with two, three, and four wires: 0.000Ω ～ 200.0kΩ
	Soil resistivity (ρ): 0.00Ωm ～ 9999kΩm
	Ground voltage: AC 0.001 ～ 600.0V
Maximum Resolution	Two, three, or four wire method for measuring ground resistance (R): 0.001Ω
	Soil resistivity (ρ): 0.01Ωm
	Ground voltage: 0.001V
Precision	Two, three, and four wire methods for measuring grounding resistance (R): ± 2% rdg ± 5dgt (0.000Ω ～ 10.00kΩ) ± 3% rdg ± 5dgt (10.00kΩ ～ 100.0kΩ) ± 3.5% rdg ± 5dgt (100.0kΩ ～ 200.0kΩΩ)
	Soil resistivity (ρ) measurement accuracy: Based on the measurement accuracy of R, calculated as Ρ = 2πaR (where a ranges from 1 m to 100m and π = 3.14)
	Ground voltage: ± 2% rdg ± 3dgt
	Note: 1. The additional error at rC max or rP max is ≤ ± 5% rdg ± 5dgt. (Note: rC max and rP max are defined as follows: rC max = 4kΩ + 100R, with rC max ＜ 50kΩ; rP max = 4kΩ + 100R, with rP max ＜ 50kΩ) 2. The additional error at 5V interference voltage is ≤ ± 5% rdg ± 5dgt.
Test Voltage Waveform	Sine wave
Test Frequency	412Hz / 825Hz / 1280Hz (automatic frequency selection)
Short-Circuit Test Current	AC 20mA max
Open Circuit Test Voltage	AC 90V max
Electrode Distance Range	1m～100m
Gear Shifting	Ground resistance: 0.000Ω ～ 200.0kΩ Full automatic shift
Gear Shifting	Soil resistivity: 0.00Ωm ～ 9999kΩm Full automatic shift
LCD	LCD 6-digit LCD, white screen backlight
LCD Size	128mm×75mm
LCD Display Field	124mm×67mm
Measurement Indication	LED flashing indication during measurement, LCD countdown, progress bar graph indication
Charging Indicator	The indicator light on the charger is red when charging, and green when fully charged
Size	Instrument size: 320mm × 275mm × 145mm
Size	Outer package size: 400mm × 245mm × 335mm
Standard Test Leads	4 standard test leads: 15m for red, 15m for black, 10m for yellow, 10m for green
Simple Test Lines	2 simple test lines: 1.6m each for red, 1.6m each for black
Auxiliary Ground Rods	4 strings: φ10mm × 150mm
Measurement Time	Voltage to the ground: about 2 times / second; ground resistance: about 7 seconds/time; soil resistivity: about 7 seconds/time
Measurement Times	5000 times or more (short-circuit test, measure once, stop for 30 seconds, and then measure)
Line Voltage	AC 600V or less
Communication Interface	With a USB interface, the stored data can be uploaded to a computer, saved, and printed
Communication Line	1 string USB communication line, 1.5m long
Data Hold	The “HOLD” symbol indicates when data is held
Data Storage	300 sets, “MEM” storage indication, “FULL” indicates that the storage is full
Data Review	“READ” symbol indication when reviewing data
Overflow Display	“OL” symbol indication when over-range overflow
Interference Test	Automatic recognition of interference signals, interference voltage is higher than 5V “NOISE” symbol indicates
Alarm Function	When the measured value exceeds the alarm set value, the “beep–beep–beep–” alarm prompts
Battery Voltage	When the battery voltage is low, the low battery voltage symbol is displayed to remind you to charge the battery.
Auto Power Off	Auto power off 15 minutes after power on
Working Current	Standby: 25mA Max (backlight off); Backlight: 25mA Max (backlight power consumption alone); Measurement: 150mA Max (backlight off)
Quality	instrument: 2.66kg (including battery)
Quality	Total weight: 6.88kg (including packaging)
Toolbox	Military toolbox design can bear 200kg
Working Temperature and Humidity	-10 ℃ ～ 40 ℃; below 80% rh
Storage Temperature and Humidity	-20 ℃ ～ 60 ℃; below 70% rh
Overload Protection	Measurement of ground resistance: AC 280V / 3 seconds between each port of C (H) -E, P (S) -ES
Insulation Resistance	above 20MΩ (500V between circuit and case)
Withstand Voltage	AC 3700V / rms (between circuit and case)
Protection Class	IP54
Electromagnetic Characteristics	IEC61326 (EMC)
Suitable For Safety Regulations	IEC61010-1 (CAT III 300V, CAT IV 150V, pollution degree 2). IEC61010-031; IEC61557-1 (ground resistance); IEC61557-5 (soil resistivity); JJG 366-2004 (ground resistance table.

Ground Earth Resistance Tester

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OVERVIEW

CHARACTERISTIC

FAQ

CHARACTERISTIC