• MEWOI3800D-Non-Contact Earth Ground Resistance Online Tester/Meter-upgraded version

MEWOI3800D-Non-Contact Earth Ground Resistance Online Tester/Meter-upgraded version

  • Name:
    MEWOI3800D-Non-Contact Earth Ground Resistance Online Tester/Meter-upgraded version
  • Model No.:
    MEWOI3800E
  • Main Features:
    1,Return circuit ground resistance, metallic return connection resistance, grounding conditions on-line monitoring 2,0.01Ω~200Ω,3,6VDC~9VDC, 50mA Max
Electricity Testing Instruments manufacturer, Support OEM/ODM, your testing specialist
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INTRODUCTION

Click to download:  Selection Map

Click to download: MEWOI3800C/D Manual

     MEWOI3800D Multifunction Non-Contact Resistance Online Tester is our company devotes ourselves to Grounding resistance test technical research’s another new high-tech product for more than ten years. Detector adopts weather fastness material manufacture, temperature resistance, cold-resistant, corrosion prevention, fire prevention. Detector’s structure is rigorous and firm, against rain, dustproof, installation and use outdoors. Non-contact measurement, safe and reliable, Ease of installation. Grounding down lead is directly through the detector perforation, Will not affect lightning protection grounding effect and the normal operation of the facilities. Ensure high-accuracy, high stability and high reliability of long time on-line monitoring outdoors, underground mine and indoors.

      MEWOI3800D Multifunction Non-Contact Resistance Online Tester is equipped with LCD display and alarm light, which can observe grounding resistance value at any times and set the alarm critical val. Alarm light will flash when measured value is beyond pre-set critical value. Detector applies to electric transmission line pole ground connection, underground mine device ground connection, meteorological lightning protection grounding connection, petrochemical engineering ground connection, communication ground connection, rail facility ground connection, building the warehouse ground connection, electrical equipment ground connection etc.. Detector provides power supply and RS485 signal interface, and standard MODBUS-RTU communication protocol,which user can do secondary development to realize remote monitoring.

      MEWOI3800D’s LCD shows measured value directly, also sets up Detector’s alarm critical value, and possess audible and visual alarming function, which is very suitable to Independent installation and use when it needn’t form a network.

APPLICATION

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SELECTION GUIDE 

Earth ground Tester

Click the "Blue"marked model No. to view the detailed specification

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.
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.

TECHNICAL SPECIFICATION

Functions

Return circuit ground resistance, metallic return connection resistance, grounding conditions on-line monitoring

Power Supply

6VDC~9VDC, 50mA Max.

Resistance Range

0.01Ω~200Ω

Resolution

0.01Ω

Display Range

0.00Ω~500Ω

Accuracy

±2%rdg±3dgt(20℃±5℃, below70%RH)

Grounding Wire 

Perforation Size

60mm×30mm, closed mode (60mm×4mm steel flat 

or external diameterФ30mm electric cable)

Overflow Indication

When show value is beyond 500Ω, systems software and LCD show “OLΩ” sign.

Connecting Line

A one meter long wire (5cores shielded wire)

Connection Identifier

Red/brown---power supply input anode;

Black--- power supply input cathode.

Blue---RS485 signal anode;

Grey---RS485 signal cathode;

White--- analog grounding (power supply input cathode can connects with analog grounding by short circuit connection)

Communication Protocol

RS485 standard MODBUS-RTU communication protocol

Alarm Indication

Detector Audible and visual alarm instructions

Alarm Setting

Detector panel setting

Data Display

4digits LCD direct indication

LCD Dimensions

47mm×28.5mm

Detector Dimensions

175mm×170mm×130mm

Installing Screw Hole Size

Φ8mm

Quality

Detector: 960g

Working Temperature and Humidity

-10℃~ 45℃; 20%RH ~ 90%RH

Humiture Error

Within 5%

Shift

Automatic shift

GND Interference Current

Prohibited

External Magnetic Field

<40A/m

External Electric Field

<1V/m

Single Measurement Of Time

About 0.5 second

Power Consumption

50mA Max.

Installation

Grounding wire through Detector centre bore

Level Of Protection

IP65

Installation Requirements

Avoid rain and water logging

Power Supply Mode

External power supply (Equipped by user)