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Product Description

Product Introduction
- ETCR3100C Earth Resistance/Soil Resistivity Tester, also known as digital earth resistance tester, ground pile earth resistance tester, soil resistivity tester, two-three-four-wire earth resistance tester, which is used for measurement of earth resistance, soil resistivity, earth voltage,the tester using digital and micro-processing technology, precision 4-wire method, 3-wire method and simple 2-wire method to measure grounding resistance, introduce FFT (fast Fourier transform) technology, AFC (automatic frequency control) technology, automatically identify interference and select the measurement frequency to minimize the impact of interference and provide more accurate earth resistance value, widely used in electric power, telecommunication, meteorology, construction, lightning protection and industrial electrical equipment industries.
- ETCR3100C Earth Resistance/Soil Resistivity Tester consists of a host, data upload software, test line, auxiliary grounding rod, communication line, etc.The tester shell adopt waterproof protection box, which is anti-collision, anti-fall, and waterproof (protection level IP65). It is strong, safe and durable. The tester is also equipped with a large-capacity rechargeable lithium battery pack, which is especially suitable for use on outdoor construction sites. The host has max LCD display, a white screen backlight, and a bar chart indication, which is clear. Storage function, storing 300 sets of data, through the USB interface data upload software to achieve historical query and online real-time monitoring functions, dynamic display, alarm instructions, with historical data reading, viewing, saving, reporting, printing and other functions.
Basic Error and Performance Indicator under Reference Condition

Main Functions & Features
- Earth Resistance Measurement,Soil Resistivity Measurement, Earth Voltage Measurement
- Earth Resistance Measurement Range: 0.00Ω-30.00kΩ
- Soil Resistivity Measurement Range: 0.00Ωm-9000kΩm
- Earth Voltage Measurement Range: AC 0V-600V
- Alarm function: Alarm threshold can be set
- Memory: 300 sets of data storage
- Large-capacity Lithium Battery
- USB Interface
General Specification
Function | 2/3/4-pole measurement for earth resistance, soil resistivity, earth voltage |
Power Supply | DC 7.4V 2600mAh rechargeable lithium battery, the battery is fully charged about 8.4V |
Backlight | Controllable white screen backlight, suitable for use in dim place |
Display Mode | 4-digit max LCD display, white screen backlight |
Measurement Instruction | The LED flash during the measurement, the LCD count backward, and the progress bar chart indicate |
LCD Display Domain | 124mm×67mm |
Measurement Range | Earth resistance: 0.00Ω-30.00kΩ; Soil Resistivity: 0.00Ωm-9000kΩm; Earth Voltage: 0V-600V |
Measurement | Precision four, three-wire measurement, simple two-wire measurement method to measure earth resistance |
Measuring Method | Earth resistance: rated current transformer method, measuring current 20mA Max; Soil resistivity: Quadrupole Method (Winner Method); Earth voltage: average rectification (between P(S)-ES interface) |
Test Frequency | 128Hz/111Hz/105Hz/94Hz(AFC) |
Test Current | >20mA(Sine wave) |
Open Circuit Test Voltage | AC 40V max |
Test Voltage Waveform | Sine wave |
Electrode Spacing Range | Range can be set 1m-100m |
Measurement Range Gear Shift | Earth Resistance: 0.00Ω-30.00kΩ Fully automatic shifting; Soil Resistivity: 0.00Ωm-9000kΩm Fully automatic shifting |
Standard Test Line | 4 pieces: red 20m, black 20m, yellow 10m, green 10m each 1 piece |
Simple Test Line | 2 pieces: red 1.6m, black 1.6m each 1 piece |
Auxiliary Earth Rod | 4 pieces: φ9mm×230mm (about 935g) |
Measurement Time | Earth voltage: about 3 times/second; Earth resistance, soil resistivity: about 15 seconds/time |
Line Voltage | Measurement below AC 600V |
Interface | With USB interface, software monitoring, storage data can be uploaded to the computer, saved and printed |
USB Line | 1 USB communication line, 1.5m long |
Memory | 300 groups, flashing "FULL”symbol indicates that the storage is full |
Data Hold | Data holding function: “HOLD" symbol display |
Data Access | Data access function: “READ" symbol display |
Overflow Display | Over-range overflow function: “OL" symbol display |
Interference Test | Automatically identify the interference signal, and the “NOISE” symbol indicates when the interference voltage is higher than 5V |
Auxiliary Earth Test | With auxiliary earth resistance value test function,0.00KΩ~30kΩ(100R+rC<50kΩ,100R+rP<50kΩ) |
Alarm Function | 300 groups, flashing "FULL”symbol indicates that the storage is full |
Alarm Threshold Setting Range | Resistance: 0Ω-9999Ω; Voltage:0.0V-600.0V |
Automatic Shutdown | Automatically shut down after 10 minutes of power on |
Battery Voltage | When the battery voltage drop to about DC 7.2V±0.1V, the low battery voltage symbol is displayed to remind the meter that it need to be charged. |
Working Current | Standby: about 20mA (backlight off); Power on when turn on backlight: about 45mA (turn off the backlight 25mA); Measurement: about 100mA (backlight off) |
Tester Size | 280mm×260mm×160mm |
Weight | Tester: About 2306g(include battery);total weight: about 6.3kg(include accessory) |
Overload Protection | Measuring earth resistance: AC 280V/3 seconds between C(H)-E、P(S)-ES ports |
Protection Level | IP65 (closing) |
Insulation Resistance | Above 20MΩ(500V between the circuit and the housing) |
Withstand Voltage | AC 3700V/rms(Between the circuit and the housing) |
Electromagnetic characteristic | IEC61326 (EMC) |
Suitable Safety Regulation | IP65(close the case) |
Suitable Safety Regulation | IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、pollution level 2);IEC61010-031;IEC61557-1(Earth resistance);IEC61557-5(Soil resistivity);JJG 366-2004 |
Working Temperature & Humidity | -10℃-40℃; below 80%RH |
Storage Temperature & Humidity | -20℃-60℃; below 70%RH |
Accessories | Tester: 1PC; Ground Rod: 4PCS; Test wires: 4PCS; Simple test wire: 2PCS; USB data transmission cable: 1PCS; Tester bag: 1PCS; Special charger: 1PCS |
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