MEWOI4300D-Dual Clamps Multi-functional Earth Resistance/Soil resistivity Tester

OEM/ODM Testing Instruments Manufacturer

  • Main Features:: Grounding resistance test Grounding voltage test Soil resistivity test Current, leakage current test
  • Model No.:: MEWOI4300D
  • Name:: MEWOI4300D-Dual Clamps Multi-functional Earth Resistance/Soil resistivity Tester
Contact Us for QuotationEmail:mewoi@mewoi.comWhatsapp: +8618620373879
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INTRODUCTION

MEWOI4300D Dual clamps Earth resistance tester is specially designed and manufactured for on-site measurement of grounding resistance, soil resistivity, grounding voltage, grounding line leakage current, AC current and DC resistance. Apply digital processing technology, precision 4-wire method, 3-wire method and simple 2-wire method, selection method, double-clamp method to measure grounding resistance, Large caliber current clamp design, can measure the grounding system which using large grounding down lead.It can flexibly and accurately measure arbitrary grounding resistance values of single point and mesh grounding and other complex grounding conditions. When measuring parallel grounding, it is unnecessary to disconnect any parallel grounding electrode to maximize the convenience of measurement. Import FFT (fast Fourier transform) technology, AFC (automatic frequency control) technology, with unique anti-interference ability and environment adaptability, to ensure that long time measurement of high precision, high stability and reliability, The tester case is made of waterproof protection box, anti-collision, anti-drop, waterproof (protection grade IP65), strong and durable, and also equipped with a large-capacity rechargeable lithium battery pack, especially suitable for outdoor construction, which widely used in grounding resistance, soil resistivity, earth voltage, AC current and leakage current measurement of electric power, telecommunications, meteorology, oil fields, construction, lightning protection and industrial electrical equipment etc.

Reference Conditions And Working Conditions

Influence Constant

Base Condition

Working Conditions

Remark

Ambient Temp

23℃±1℃

-10℃-40℃

/

Ambient Humidity

40%-60%

<80%

/

Working Voltage

7.8V±0.1V

7.8V±0.6V

/

Auxiliary Earth Resistance Value

<100Ω

<30kΩ

/

InterferenceVoltage

Should Avoid

<20V

/

InterferenceCurrent

Should Avoid

<2A

/

Electrode Distance of measuring R

a>5d

a>5d

/

Electrode Distance of  measuring ρ

a>20h

a>20h

/

Technical Specifications

Function

Measurement of   earth resistance, soil resistivity; DC resistance, earth voltage,AC current, leakage current

Power Supply

DC 8.4V (rechargeable battery, continues standby 300 hours)

Backlight

Controllablescreen backlight, suitable for dim places

Measuring Mode

Precise 4-wire measurement, 3-wire measurement, simple 2-wire measurement, selection method, double clamp method to measure grounding resistance

Measuring Method

2/3/4 pole measurement method: Change-pole method, measurement current 20mA Max

Selection measurement method: Change-pole method, measurement  current 20mA Max

Double clamp measurement method: Non-connect mutual inductance method, measurement current 1mA Max

Soil Resistivity: 4-pole measurement (Wenner method)

DC resistance: Change-pole method

AC current: Mutual inductance method(clamp)

Earth Voltage: Average rectification(betweenP(S)-ES)

Test Voltage Wave

Sine wave

Test Frequency

128Hz/111Hz/105Hz/94Hz(AFC)

Short-circuit Test Current

AC 20mA max

Open-circuit Test Current

AC 40V max

Electrode DistanceRange

1m-100m

Display Mode

4-digital large LCD display, with screen backlight

Measuring Indication

During measurement, LED flash indication, LCD count down display

LCD Frame Dimension

128mm×75mm

LCD Display Area

124mm×67mm

Tester Dimension

280mm(L)×260mm(W)×160mm(H)

CT Size

185mm(L)X115mm(W)X43mm(H)

Test Wire

4PCS: red 20m, black 20m, yellow 10m, and green 10m

Simple Test Wire

2PCS: red 1.6m and black 1.6m

Auxiliary Grounding Rod

4PCS:Φ10mm×150mm

Current Clamp

2PCS :1 blue-black plug and 1 red-blackplug

Clamp Caliber

Φ68mm

Clamp Turn Ratio

1000:01:00

Current Clamp Lead Wire

2m

Measurement Time

AC current: about 2 times/second

Voltage to earth: about 2 times/second

Earth resistance: about 7 seconds/time

Measurement Times

Over 5000 times (Short-circuit test, interval time should be at least 30seconds)

Line Voltage

Below AC 600V measure

Communication Interface

RS232 interface, storage data can be uploaded to computer, saved or printed.

Communication Cable

RS232 communication cable 1pcs, length 1.5m

Data Hold

Data hold function: “HOLD” symbol display

Data Storage

2000 sets, “MEM” storage indication, “FULL” symbol flash display indicate that storage full

Data Access

Data access function: “READ” symbol display

Overflow Display

Exceed measure range overflow function: “OL” symbol display

Current Clamp Low Current Indication

Measurement with selection method or double clamp method, the current signal received by CT2 is lower than 0.5mA,will display““, and should check the clamping direction of the CT2 current clamp

Interference Test

Automatic identification of interference signals,“NOISE”symbol indication when the interference voltage is higher than 5V

Auxiliary Grounding Test

With auxiliary grounding resistance test function, 0.00KΩ-30kΩ(100R+rC<50kΩ, 100R+rP<50kΩ)

Alarm Function

Measurement value exceeds alarm setting value, will "Toot-toot-toot" alarm hint

Battery Voltage

While battery voltage decreases to around 7.2V, will display low battery voltage symbol, and reminding to replace the battery

Auto-shut off

Automatically shut down after 15 minutes of booting up without any operation

Working Current

Backlight: 25mA Max(only backlight power consumption)

Standby:25mA Max(Backlight close after power on)

Measurement:150mA Max(Backlight close)

Weight

Tester:2230g

Tester package: 915g

Current Clamp: 1050g(2pcs)

Test wires: 1560kg(include the simple test wires)

Auxiliary grounding rods: 935kg(4pcs)

Working Temperature & Humidity

-10℃-40℃, below 80%rh

Storage temperature & humidity

-20℃-60℃, below 70%rh

Protection Level

IP65(close the case)

Overload Protection

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

Insulation Resistance

Over 20MΩ(betweencircuit and shell 500V)

Withstanding Voltage

AC 3700V/rms. (Between circuit and shell)

Electromagnetic Features

IEC61326(EMC)

Protection Type

IEC61010-1(CATⅢ300V、CAT IV 150V、Pollution 2);

IEC61010-031;

IEC61557-1(Earth resistance);

IEC61557-5(Soil resistivity);

JJG 366-2004(Grounding resistance meter)

JJG 1054-2009(Clamp grounding resistance meter)

Intrinsic error and performance indicators under base conditions

Measurement Function

Measurement Range

Intrinsic Error

Resolution

2/3/4 pole method measure earth resistance(Re)    DC resistance(R--)

0.00Ω-29.99Ω

±2%rdg±5dgt

0.01Ω

30.0Ω-299.9Ω

±2%rdg±3dgt

0.1Ω

300Ω-2999Ω

±2%rdg±3dgt

3.00kΩ-30.00kΩ

±4%rdg±3dgt

10Ω

Selection method measure grounding resistance(Re)

0.00Ω-29.99Ω

±2%rdg±5dgt

0.01Ω

30.0Ω-299.9Ω

±2%rdg±3dgt

0.1Ω

300Ω-3000Ω

±2%rdg±3dgt

Double clamp method measure grounding resistance(Re)

0.01Ω-0.99Ω

±10%rdg±5dgt

0.01Ω

1.0Ω-29.9Ω

0.1Ω

30Ω-100Ω

Soil Resistivity

(ρ)


0.00Ωm-99.99Ωm

Accuracy:According to the precision ofR

(ρ=2πaR, a:1 m-100m,π=3.14)

0.01Ωm

100.0Ωm-999.9Ωm

0.1Ωm

1000Ωm-9999Ωm

1Ωm

10.00kΩm-99.99kΩm

10Ωm

100.0kΩm-999.9kΩm

100Ωm

1000kΩm-9000kΩm

1kΩm

Earth Voltage(50Hz/60Hz)

AC 0.0-100V

±2%rdg±3dgt

0.1V

Alternatingcurrent(50Hz/60Hz)

0.0mA-600.0A

±2%rdg±3dgt

0.01mA

Accessories

Host1
Handbag1
USB Cable1
Power Adapter1
Grounding Rod2
Simple Line2
Current Clamp2
20M Test Wire2
10M Test Wire2

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