MEWOI3900C Contact Type Ground resistance,Earth Resistance Online Tester/Meter

OEM/ODM Testing Instruments Manufacturer

  • Main Features:: Online Earth Resistance Measurement
  • Model No.:: MEWOI3900C
  • Name:: Ground resistance,Earth Resistance Online Tester

Contact Us for QuotationEmail:mewoi@mewoi.comWhatsapp: +8618620373879

Click to Download:MEWOI3900 Online Earth Resistance Tester User Manual

INTRODUCTION

MEWOI3900C Earth Resistance Online Detector is high-tech product that our company has devoted to "grounding resistance detection technology research" for more than ten years, Using precision 3-wire or simple 2-wire measurement method to test the grounding resistance. Adopt average value rectification method to test grounding voltage, online detection, real-time monitoring. User can select RS232 or RS485 communication, according the protocol MODBUS to secondary development, build network, realize remote multipoint online monitoring etc.

MEWOI3900C Earth Resistance Online Detector displayed by super large LCD, very clear and obvious. The alarm critical value can be set via the button, and with the sound and light alarm indication. Ensure the high accuracy, high stability and high reliability of real-time online monitoring of grounding resistance value in various place.

MEWOI3900C Earth Resistance Online Detector Tester suitable for transmission line tower grounding, underground mine equipment grounding , weather lightning protection grounding, petrochemical grounding ,communication base station grounding, power substation grounding , railway grounding , building warehouse grounding , electrical equipment grounding, etc.

MAIN FEATURES

1,Using precision 3-wire or simple 2-wire measurement method to test the grounding resistance. Adopt average value rectification method to test grounding voltage, online detection, real-time monitoring.
2,User can select RS485 or GPRS communication, according the protocol MODBUS to secondary development, build network, realize remote multipoint online monitoring etc.
3,With LCD screen, can observe the grounding resistance value at any time. Audible and visible alarm, setting the alarm thresholds. Setting the automatic monitoring record interval time
4,Tester equip with guide rail structure,  convenient to installation.

MEWOI OEM/ODM  Instruments Manufacturer

TECHNICAL SPECIFICATION 

Function
On-line monitoring ground resistance, ground voltage, equipotential connection resistance, low resistance.
Power Supply
Standard: 12V±1VDC, 400mA Max.

RangeAccuracy
Resolution
Resistance
0.01Ω~20Ω
±2%rdg±3dgt
(auxiliary ground resistance 100Ω±5%, voltage to ground<10V)
0.01Ω
0.1Ω~200Ω0.1Ω
1Ω~2000Ω
Voltage
0~600V AC±2%rdg±3dgt1V
Measure Mode
Precise 3-wire measurement, simple 2-wire measurement.
Measure Method
Ground resistance: rated current change-pole method, measured current 11mA Max, 128Hz;
Voltage to ground: average value rectification method.
Data Mode
Mean.
Display Mode
4-digital super-large LCD.
Measuring Indicator
During measurement, LCD count down display.
LCD Size
128mm×75mm;
Display field: 124mm×67mm.
Dimension
L×W×H: 130mm×90mm×54mm.
Measure Rate
Voltage to ground: about 2 times/second; ground resistance: about 30 seconds/time.
Measure Times
Over 10000 times(Measuring 10Ω for one time and take a pause for 30s).

Monitoring Interval  Time

Setting range of automatic monitoring interval time :1-999 h
Instrument Interface
Pluggable terminal blocks: 9 pin connector.
Communication Method
RS485 or GPRS
Communication Line
USB to RS485 communication line( or optionalUSB to RS232 communication line).
Range Shift
Automatically.
Data Storage
99 groups, flash display 99 icon to indicate storage is full.
Interval Time
Range of automatic monitoring interval time: 1-999 h.
Data Access
Data read function: READ icon display.
Overflow Display
Exceeding measuring range overflow function: OL icon display.
Alarm
Audible and visible alarm.
Power supply Voltage
When power supply voltage decreases to about 10V, power supply low symbol will display, reminding to replace the power.
Weight
Detector: 380g.
Working Humiture
-10℃~40℃; below 80%rh.
Storage Humiture
- -20℃~60℃; below 70%rh.
Overload Protection
Measurement ground resistance: E-P, E-C between each interfaces AC 280V/3 sec.
Electromagnetism

IEC61010-4-3,Radio frequency electromagnetic field≤1V/m.

Line VoltageMeasuring the voltage to ground: Below AC 600V
AccessoriesMeter*1,Power and Communication Cable*1,Aluminum Mounting Parts, Manual

SELECTION GUIDE

Digital Earth Resistance Clamp Meter

Click "blue"marked model No. for detailed Specificaiton

ModelRange
Resolution
clamp sizeRS232Data StorgeOther

MEWOI3000B+

MEWOI3000B+.jpg

0.01Ω-200Ω   0.001Ω65mm×32mmoptional
99sets

MEWOI3100B+

MEWOI3100B+.jpg

ø32mm

MEWOI3000B

MEWOI OEM/ODM  Instruments Manufacturer

55mm×32mm

MEWOI3000

MEWOI OEM/ODM  Instruments Manufacturer

0.01Ω-1000Ω0.001Ω55mm×32mm
99sets

MEWOI3000+

MEWOI3000B+.jpg

0.01Ω-1200Ω 0.001Ω65mm×32mmoptional99sets

MEWOI3100+

MEWOI3100B+.jpg

ø32mm

MEWOI3000D

MEWOI OEM/ODM  Instruments Manufacturer

0.01Ω-1000Ω

0.00-30.00A

0.001Ω,0.05mA 55mm×32mm
99sets

MEWOI3000D+

MEWOI3000B+.jpg

0.01Ω-1200Ω

0.00-20.00A 

0.001Ω,0.05mA 65mm×32mmoptional99sets

MEWOI3100D+

MEWOI3100B+.jpg

ø32mm

MEWOI3200

MEWOI3200.80.jpg

0.01Ω-1500Ω

0.00-40.00A 

0.001Ω,0.05mA 

65mm×32m

m

99setsRechargable Batteries

MEWOI3800CA

MEWOI3800CA.80.jpg

0.01Ω-100Ω 0.01Ω60mm*30mm,(Closed)Appoint with RS485 communication interface, provide standard MODBUS-RTU communication protocol×

MEWOI3800DA

MEWOI3800DA.80.jpg

0.01Ω-100Ω 0.01Ω

60mm*30mm

(Closed),

×LCD display,warning function.

MEWOI3800LC

MEWOI3800LC.80.jpg

0.01Ω-200Ω   0.01Ω

Split  Type

56mm×26mm

Wired network: RS232,RS485 standard communication protocol

Wireless network: RS232、RS485、GSM communication protocol

×

MEWOI3800LD

MEWOI3800LD.80.jpg

0.01Ω-200Ω 0.01Ω

Split Type

56mm×26mm

×LCD display,warning function.

MEWOI3900

MEWOI OEM/ODM  Instruments Manufacturer

0.01Ω~2000Ω0.01Ω


2/3-wires measurement

Online

MEWOI3900C

MEWOI OEM/ODM  Instruments Manufacturer

0.01Ω~2000Ω0.01Ω


2/3-wires measurementOnline,GPRS

MEWOI4000

MEWOI4000.80.jpg

0.01Ω~2000Ω;

0~600V

0.01Ω,1V
400sets2/3-wires measurement of earth resistance/voltage

MEWOI4000D

MEWOI OEM/ODM  Instruments Manufacturer

0.01Ω~2000Ω;

0~600V

0.01Ω,1V
400sets2/3-wires measurement of earth resistance/voltage

MEWOI4000C

MEWOI4000C.80.jpg

earth resistance:0.01Ω~30.00KΩ;

soil resistivity:0.01Ωm~9000KΩm;

0~600V

0.01Ω,0.01Ωm,1V
300sets2/3/4-wires measurement of earth resistance,soil resistivity,and earth voltage

MEWOI4200D

MEWOI OEM/ODM  Instruments Manufacturer

earth resistance:0.01Ω~30.00KΩ;

soil resistivity:0.01Ωm~9000KΩm;

0~600V

0.01Ω,0.01Ωm,1V
300sets2/3/4-wires measurement of earth resistance,soil resistivity,and earth voltage

MEWOI4200

MEWOI4200-1_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,0.1Vø68mm2000sets2/3/4-wires,selection & dual clamp method to measure the earth resistance,soil resistivity,earth voltage,AC voltage,AC leakage current,warning function.

MEWOI4300D

MEWOI OEM/ODM  Instruments Manufacturer

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,0.1Vø68mm2000sets2/3/4-wires,selection & dual clamp method to measure the earth resistance,soil resistivity,earth voltage,AC voltage,AC leakage current,warning function.

MEWOI4250

MEWOI OEM/ODM  Instruments Manufacturer

Ground resistance:0.10Ω ~ 200Ω(4 clamp method)

Ground resistance ( R ):0.10Ω ~ 20KΩ

Soil resistivity ( ρ )0kΩm~9000kΩm

AC current (A~)1mA~500.0A

Ground voltage (V~)0.0V~200.0V

0.01Ω,0.01Ωm,0.01mA,0.1Vø68mm100setsUntie-free tower grounding resistance tester


Telephone
E-mail
After Sales
QQ