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产品名称: Ground Resistance Tester
产品型号: LYJD3000
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简单先容
LYJD3000 Ground Resistance Tester ? Soil Resistivity Tester also known as Four-Wire Ground Tester, Precision Ground Resistance Tester, is a commonly used meter for measuring grounding resistance.

Ground Resistance Tester

的详细先容

I. Introduction

LYJD3000 Ground Resistance ? Soil Resistivity Tester also known as Four-Wire Ground Tester, Precision Ground Resistance Tester, is a commonly used meter for measuring grounding resistance. It adopts a large LCD gray-white screen backlight display and microprocessor technology to meet the requirements of two-wire, three-wire and four-wire test resistance and soil resistivity test. Suitable for telecommunications, electricity, meteorology, computer rooms, oil fields, power distribution lines, iron tower transmission lines, gas stations, factory grounding networks, lightning rods and so on. Instrument testing is precise, fast, simple, stable and reliable.

The Ground Resistance ? Soil Resistivity Tester is controlled by the microprocessor and can automatically detect the connection status of each interface and the interference voltage and interference frequency of the ground network, and has the function of testing the auxiliary grounding resistance value. At the same time store 500 sets of data, resistance measurement range: 0.01Ω ~ 30.00kΩ, grounding voltage range: 0.01 ~ 600.0V

 

II.Measuring Range and Accuracy

Earth Voltage

AC 0.00-600V

±2%rdg±3dgt

0.01V

 

 

Remark:1. Reference conditions: Accuracy when Rh Rs < 100Ω.

Operating conditions: Rh max = 3kΩ + 100R <50kΩ; Rs max = 3kΩ + 100R <50kΩ

2. Depending on the measurement accuracy of R, π = 3.14, a: 1 m ~ 100m;

 

 

IV.Technical Specifications

Function

Two, three, four-wire measure grounding resistance, soil resistivity; Ground voltage, AC voltage

Ambient temperature and humidity

23℃±5℃,below 75%rh

Power Supply

DC 9V 6-section LR14 Dry Battery Standby for more than 100 hours

Interference current

<2A (should be avoided)

Measure R electrode spacing

a>5d

Measured electrode spacing

a>20h

Auxiliary Earth Resistance

Reference Conditions <100Ω, Operating Conditions <5kΩ

Range

Grounding resistance: 0.00Ω to 30.00kΩ

Soil resistivity: 0.00Ωm9999kΩm

Ground voltage: 0.00V to 600.0V

Measurement Method

Precision 4-wire, 3-wire measurement, simple 2-wire grounding resistance

Measuring Methods

Grounding resistance: rated current change method

Soil resistivity: four-pole method

Ground voltage: average rectification (S-ES interface)

Test Frequency

128Hz

Short-circuit Test Current

AC >20mA (sine wave)

Open Circuit Test Voltage

AC 28V max

Electrode SpacingRange

can be set from 1m to 100m

Change Gear

Grounding resistance: fully automatic shifting from 0.00Ω to 30.00kΩ

Soil resistivity: 0.00 Ωm9000kΩm automatic shifting

Backlight

Gray screen backlight, suitable for dim places

Display Mode

4-digital super-large LCD display, blue screen backlight

Measuring Indicator

During measurement, LED flash

LCD Frame Dimension

111mm×65mm

LCD display area

108mm×65mm

Dimension

L×W×H: 240mm×188mm×85mm

Standard Test Wire

4 wires: each for red 20m, black 20m, yellow 10m, and green 10m

Simple Test Wire

2 wires: each for yellow 1.5m and green 1.5m

Auxiliary Earthing Rod

4 PCS

Measuring Rate

Voltage to ground: about 3 times/second

Earth resistance, soil resistivity: about 7 seconds/time

Circuit Voltage

below AC 600V

Data Storage

500 sets, “MEM” icon storage indicator, flash display “FULL” icon to indicate storage is full

Data Read

Data read function: “MR” icon display

Overflow Display

Exceeding measuring range overflow function: “OL” icon display

Alarm Function

Alarm when the measured value exceeds the alarm setting value

Battery Voltage

Low battery voltage symbol display

Power Consumption

Standby: About 40mA (backlight off)

Turn on and backlight on: about 43mA

Measurement: about 75mA (backlight off)

Weight

Tester1230g (including battery)

Testing Wires1300g

Auxiliary earthing rod720g(4 PCS)

Working Temperature & Humidity

-1040below 80%rh

Storage temperature & humidity

-2060below 70%rh

Overload Protection

Measuring earth ground resistance: between each interfaces of H-ES-ES, AC 280V/3 seconds

Insulation Resistance

Over 20MΩ(between circuit and enclosure it is 500V)

Withstanding Voltage

AC 3700V/rms (Between circuit and enclosure)

Electromagnetic Features

IEC61326(EMC)

Protection Type

IEC61010-1 (CAT III 300V, CAT IV 150V, Pollution Degree 2);

IEC61010-031;

IEC61557-1 (grounding resistance);

IEC61557-5 (soil resistivity);

JJG 366-2004


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