About this item

(1) Precise 4-pole, 3-pole and simple 2-pole method, selection method, double clamp method for grounding resistance measurement, The measurement of earth resistance, soil resistivity, earth voltage, AC voltage, grounding lead leakage current, AC current, DC resistance.

(2) It is a special meter for measuring the equipotential bonding quality between metal constructions in buildings(Lightning belt, floor beam,structure, protection, floor bar, water pipe, radiator, toilet, doors and Windows, balcony, kitchen and other objects).

(3) Importing FFT and AFC technology. With unique anti-interference ability and environmental adaptability, high consistent of retest,

(4) The large LCD display of host machine , with white backlight and bar graph indication that can be seen clearly.

(5) With Alarm and data memory function

(6) Data upload function, could upload memory data to computer for saving and printing.

(7)Grounding Resistance Range: 0.00Ω~30.00kΩ; Soil Resistivity Range: 0.00Ωm~9000kΩm

(8)Data Storage : 2000 groups

(9)Short-Circuit Test Current : AC 20mA max; Caliber of Clamp φ68mm; Connect wires:2M

(10)Test Frequency 128Hz/111Hz/105Hz/94Hz(AFC)

Product Introduction:

Double Clamp Earth Resistance Tester, also known as multi-function earth resistance tester and precision earth resistance tester, which is used for measurement of on-site measurement of earth resistance, soil resistivity, earth voltage, down lead leakage current, AC current, and DC resistance.

The tester adopt digital processing technology, precision 4-wire method, 3-wire method, simple 2-wire method, selection method, and double clamp method to measure the earth resistance, which can flexibly and accurately measure any earth resistance value of various complex grounding conditions such as single-point and mesh grounding.

No need to disconnect any parallel grounding electrode during parallel earth measurement, which maximize the convenience of measurement. Introducing FFT (fast Fourier transform) technology and AFC (automatic frequency control) technology, it has unique anti-interference ability and environmental adaptability, and strong consistency in repeated tests to ensure high precision, high stability and high reliability of long-term measurement.

It is widely used in electric power, telecommunication, meteorology, construction, lightning protection and industrial electrical equipment industries.

Double Clamp Earth Resistance Tester consists of a host, a current clamp (double clamp), data software, a test line, an auxiliary earth rod, and a communication line, etc.

The large LCD display of host, with backlight and bar chart indication, data result is clear.At the same time, it can store 2000 sets of data, and through the USB interface data software, historical data can be read, consulted, saved, reported, printed and other functions.

Features:

1. The two-three- and four-wire,selection method, and double clamp method to measure earth resistance

2.The tester adopt FFT (fast Fourier transform) technology and AFC (automatic frequency control) technology. It has unique anti-interference ability and environmental adaptability, and has strong consistency in repeated tests.

3.The host has a large LCD display, white screen backlight, and bar chart indication, which is clear.

4.Alarm function, the alarm threshold can be set.

5.Memory, 200 sets of data storage.

6.USB interface, data upload function.

Technical Parameters:

2/3/4 -Wire Method Measure Earth Resistance (R) Range: 0.00Ω~30kΩ;

Selection Method Measure Earth Resistance (R )Range: 0.00Ω~3000Ω;

Double Clamp Method Measure Earth Resistance (Re) Range: 0.01Ω~100Ω;

Earth Voltage Range: AC 0.0~100.0V;Resolution: 0.1V

AC Current Range: 0.00mA~600.0A:Resolution: 0.00mA

Soil Resistivity (ρ) Range:0.00Ωm~9000kΩm

Measurement Method

1. 2/3/4-wire method: change-pole method, measure current 20mA Max
2. Selection method: change-pole method, measure current 20mA Max
3. Double clamp method: Sensing measurement method, test current 1mA Max
4. Soil Resistivity: 4-pole method(Wenner method)
5. Voltage to earth: average rectification(between P(S)-ES)
6. AC current: clamp sensor measurement

Test Current:> 20mA (sine wave)

Open-Circuit Test Current:AC 40V max

Data Storage:2000 groups

Test Voltage Wave:Sine wave

Dead Hold:Data hold function: “HOLD” symbol display

Deta Access:Data access function: “READ” symbol display

Overflow Display:Over range overflow function: “OL” symbol display

Test Frequency:128Hz/111Hz/105Hz/94Hz(AFC)

Weight:5.8kg(include accessories and packing)

Automatic Shutdown:15 minutes without any operation after starting up, the tester will shutdown automatically

Electromagnetic Properties:IEC61326(EMC)

LCD Dimension:128mmX75mm; LCD display area: 124mmX67mm

Clamp Sensor:CT Size: φ50mm, clamp current sensor cable length: 2m

Electrode Distance Range:Can be set 1m~100m

Power Supply:DC 9V (Alkaline dry battery LR14 1.5VX6 PCS )(Batteries are not included in the package)

Working Current:Standby: 45mA Max(Backlight off 25mA);Measurement:100mA Max(Backlight off)

Test Line:Red 20m, black 20m, yellow 10m, green 10m, red 1.6m, black 1.6m (total 6PCS)

Auxiliary Ground Stage:4PCS,φ9mm×230mm

USB Interface:With USB interface, software monitoring, storage data can be uploaded to computer for saving and printing

Interference Test:Automatic identify the interference signal, interference voltage higher than 5V will display “NOISE” symbol

Auxiliary Earth Test:With auxiliary earth resistance test function: 0.00KΩ-30kΩ(100R+rC<50kΩ, 100R+rP<50kΩ)

Alarm Function:When the measured value exceed alarm setting value, will have “Du--du--du” alarm sound

Battery Voltage:While battery voltage drop to DC 7.5V, low battery voltage symbol“” will display, and remind to replace the battery

Overload Protection:Measure earth resistance: between each interfaces of C(H)-E、P(S)-ES, AC 280V/3 seconds

Accessories:Tester:1PCS; Clamp current sensor: 2 PCS; Ground stake: 4PCS; Test line: 6PCS ; USB communication cable: 1PCS; Tool bag :1PCS; LR14 battery: 6PCS