MEWOI3100+-0.01-1200Ω Clamp on Earth/Loop/GEO Resistance Tester/Meter,earth ground tester,lighting Protection

  • Name:
    MEWOI3100+-0.01-1200Ω Clamp on Earth/Loop/GEO Resistance Tester/Meter,earth ground tester,lighting Protection
  • Model No.:
    MEWOI3100+
  • Main Features:
    1,Measuring Range:0.01-1200Ω,2,Stored Data:99 sets,3,Clamp Size:32mm,4,Power Consumption:Maximum 50mA
OEM/ODM Manufacturer
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INTRODUCTION

Click to download:MEWOI3100+Manual

Click to download:  MEWOI3100+ Color Page

Click to download: Field Application Guide

Click to download: Selection Map

MEWOI3100+.1000.005.jpg

MEWOI3100+ Clamp Earth Resistance Tester is widely applied in ground resistance measurement, loop resistance measurement in fields such as electric power, telecommunications, meteorology, oil field, architecture and industrial electrical equipment, etc. When measuring ground system with loop, there is no need to disconnect the ground wire without auxiliary electrode, which means safer and faster. MEWOI3100+ Clamp Earth Resistance Tester can measure the ground fault which can not be measured by traditional method, can apply in the occasion where traditional methods are unworkable; MEWOI3100+ Clamp Earth Resistance Tester measures the integrated value of ground resistance and resistance lead.

APPLICATION

20101111152555136.jpg

Why earth resistance can be found by only clamping it?

Rx, is defined as earth resistance under test, and R1, R2...Rn are defined as earth resistance of other measuring objects.

MEWOI OEM/ODM  Instruments Manufacturer

These earth resistances, R1, R2, Rn can be considered that they are connected in parallel.
And they can be regarded as a combined resistance Rs. The Rs can be regarded small enough against Rx since a combined resistance consists of several resistances. Following is an equivalent circuit diagram of this circuit.

MEWOI OEM/ODM  Instruments Manufacturer

Voltage V is applied to the object (Resistance Rx) measured from the voltage injection transformer CT1, and the current I corresponding to the earth resistance is flowed.
The current I is detected with detection transformer CT2, and object (Resistance Rx) measured can be put out by the calculation. (refer to the right diagram)

MEWOI OEM/ODM  Instruments Manufacturer

SELECTION GUIDE

Digital Earth Resistance Clamp Meter

Click "blue"marked model No. for detailed Specificaiton

ModelRange
Resolution
clamp sizeRS232Data StorgeAudible and visible alarm Other
MEWOI3000B+MEWOI3000B+_副本.jpg
0.01Ω-200Ω    0.01Ω65mm×32mmoptional 
99sets
MEWOI3100B+MEWOI3100B+官网主图_副本_副本.jpgø32mm
MEWOI3000+MEWOI3000B+_副本.jpg0.01Ω-1200Ω   0.01Ω65mm×32mmoptional 99sets
MEWOI3100+MEWOI3100B+官网主图_副本_副本.jpgø32mm
MEWOI3000D+MEWOI3000B+_副本.jpg

0.01Ω-1200Ω 

0.00-20.00A  

0.01Ω,0.05mA  65mm×32mmoptional 99sets
MEWOI3100D+MEWOI3100B+官网主图_副本_副本.jpgø32mm
MEWOI3800CMEWOI3800C_副本80.jpg0.01Ω-200Ω    0.01Ω60mm*30mmAppoint with RS485 communication interface, provide standard MODBUS-RTU communication protocol×

MEWOI3800DMEWOI3800D_副本80.jpg0.01Ω-200Ω  0.01Ω60mm*30mm×
LCD display,warning function.
MEWOI3800LCMEWOI3800LC.80.jpg0.01Ω-200Ω    0.01Ω

Split  Type

56mm×26mm

Wired network: RS232,RS485 standard communication protocol

Wireless network: RS232、RS485、GSM communication protocol

×

MEWOI3800LDMEWOI3800LD.80.jpg0.01Ω-200Ω  0.01Ω

Split Type

56mm×26mm

×
LCD display,warning function.
MEWOI4000MEWOI4000C_副本.jpg

0.01Ω~2000Ω;

 0~600V

0.01Ω,1V
400sets
2/3-wires measurement of earth resistance/voltage
MEWOI4000CMEWOI4000C_副本.jpg

earth resistance:0.01Ω~30.00KΩ;

soil resistivity:0.01Ωm~9000KΩm;

 0~600V

0.01Ω,0.01Ωm,1V
300sets
2/3/4-wires measurement of earth resistance,soil resistivity,and earth voltage
MEWOI4200MEWOI4200-1_副本80.jpg

earth resistance:0.01Ω~30.00KΩ;AC Leakage current: 0.00mA~600A; 

soil resistivity:0.01Ωm~9000KΩm;Earth Voltage:0.0~100.0V,dual clamp: 0.01Ω-100Ω

0.01Ω,0.01Ωm,0.01A,0.1Vø68mm2000sets
2/3/4-wires,selection & dual clamp method to measure the earth resistance,soil resistivity,earth voltage,AC voltage,AC leakage current,warning function.


TAG:  NEW Original ON SALE earth resistance testers ground resistance Loop Resistance

Technical Specification

Function

Ground resistance test, Loop resistance test

Power Supply

6VDC 4 PCS of AA Alkaline batteries

Resistance Range

0.01-1200Ω

Resistance Resolution

0.001Ω

Highest Resistance Accuracy

±1%±0.01Ω

Data memory

99 Sets

Alarm Threshold Setting Range

Resistance: 1-199Ω

Alarm Sound and Light

“Beep-beep-beep” alarm tone, Alarm Symbol Flashing, Press AL key to turn on, turn off Alarm or set Alarm Threshold.

Interference Signal Recognition

“Beep-beep-beep” tone, NOISE symbol blinking

Working Temperature and Humidity

-20℃-55℃;20%RH-90%RH(Please storge and Operate the instrument at its ranges)

LCD Screen

4 Digits LCD display, Screen L×W: 47mm×28.5mm

Clamp Size

Φ32mm

Clamp Opening Extent

32mm

Tester Weight

1160g (With batteries)

Clamp Dimension

L×W×T: 285mm×85mm×56mm

Protection Level

Dual Insulation

Structural Feature

Clamp CT

Shifting

Automatic shifting

External magnetic field

<40A/m

External electrical field

<1V/m

Single measurement time

0.5 second

Resistance measurement frequency

>1KHz

Measured current frequency

50/60Hz Automatic measurement

Low Battery Indication

Low battery symbol displays when battery is lower then 5.3V

Memory Full Indication

MEM symbol blinks when all 99 sets memory is full

Over Range Indication

Out of range indication “OLΩ”, “L0.01” or “OL A”

Auto Power-off

5 minutes after Boot up

Power Consumption

Max 50mA either in booting up or normally working, Continuously working for 30 hours

RS232 Interface (Optional)

The data stored in the meter are uploaded to the computer through RS232 interface and data wire, Then generate report files

Safety Provisions

IEC1010-1, IEC1010-2-032, Pollution level 2, CAT Ⅲ(150V)

Accessories

Meter: 1 piece, Test ring: 1 Piece, Meter Suitcase: 1 Piece


TAG:  NEW Original ON SALE earth resistance testers ground resistance Loop Resistance

Meter: 1 piece, Test ring: 1 Piece, Meter Suitcase: 1 Piece


TAG:  NEW Original ON SALE earth resistance testers ground resistance Loop Resistance

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