MEWOI3800LD-Non-Contact Split core Earth Ground Resistance Online Tester/Meter

Electricity Testing Instruments manufacturer, Support OEM/ODM, your testing specialist

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

Model No.:： MEWOI3800LD

Name:： MEWOI3800LD-Non-Contact Split core Earth Ground Resistance Online Tester/Meter

TECHNICAL SPECIFICATION

Click to download: MEWOI3800LD User Manual

Click to download: MEWOI3800LD Color Page

Click to download: Selection Map

Function	Loop resistance on-line monitoring, metal loop resistance connection online monitoring, grounding condition monitoring.
Power Supply	Detector: DC6V~ DC9V, 50ma Max. Wired network communication device: 6VDC，30mA Max. Wireless network communication device: 9VDC，150mA Max.(GSM)
CT Structure	Split Type
CT Size	56mm×26mm
Resistance Range	0.01Ω ~ 200Ω
Resolution	0.001Ω
Accuracy	±2% rdg±3dgt(20°C ± 5°C, below 70%RH)
Overflow Indication	When show value is beyond 200Ω, 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)
Protocol Standard	Wired network: RS232,RS485 standard communication protocol Wireless network: RS232、RS485、GSM communication protocol
Network Nodes	Wired network: 1~255 grounding points, scalable Wireless networks: 1~100 grounding points, scalable
Communication Distance	Wired network: about 1500 meters, scalable Wireless networks: Unlimited
Alarm Indication	MEWOI3800LC: system software alarm indication MEWOI3800LD: sound and light alarm and system software alarm
Alarm Setting	MEWOI3800LC: system software settings MEWOI3800LD: tester panel settings, system software settings
Data Display	MEWOI3800LC: system software display MEWOI3800LD: 4 bit LCD direct display, system software display
LCD Dimensions	47mm×28.5mm
Detector Dimensions	Detector: 119mm×118mm×76mm. Wired network communication device: 140mm×105mm×75mm. Wireless network communication device: 230mm×160mm×105mm
Weight	Detector: 1000g. Wired network communication device: 650g. Wireless network communication device: 1300g
Working Temperature And Humidity	-20°C~55°C;20% RH~90% RH
Temperature and humidity error	Within 5%
Shift	Automatic shift
GND Interference Current	Prohibited
External Magnetic Field	< 40A/m
External Electric Field	< 1V/m
Single Measure Time	About 0.5 second
Power Consumption	Detector: DC6V~ DC9V, 50ma Max. Wired network communication device: 6VDC，30mA Max. Wireless network communication device: 9VDC，150mA Max.(GSM)
Installation	Grounding wire cross Detector centre bore
Level Of Protection	IP65
Power Supply Mode	External power supply (Equipped by user)

SELECTION GUIDE

Digital Earth Resistance Clamp Meter

Click "blue"marked model No. for detailed Specificaiton

Model	Range	Resolution	clamp size	RS232	Data Storge	Audible and visible alarm	Other
MEWOI3000 B+	0.01Ω-200Ω	0.01Ω	65mm×32mm	optional	99sets	√
MEWOI3100B+	0.01Ω-200Ω	0.01Ω	ø32mm	optional	99sets	√
MEWOI3000+	0.01Ω-1200Ω	0.01Ω	65mm×32mm	optional	99sets	√
MEWOI3100+	0.01Ω-1200Ω	0.01Ω	ø32mm	optional	99sets	√
MEWOI3000D+	0.01Ω-1200Ω 0.00-20.00A	0.01Ω,0.05mA	65mm×32mm	optional	99sets	√
MEWOI3100D+	0.01Ω-1200Ω 0.00-20.00A	0.01Ω,0.05mA	ø32mm	optional	99sets	√
MEWOI3800C	0.01Ω-200Ω	0.01Ω	60mm*30mm	Appoint with RS485 communication interface, provide standard MODBUS-RTU communication protocol	×
MEWOI3800D	0.01Ω-200Ω	0.01Ω	60mm*30mm		×		LCD display,warning function.
MEWOI3800LC	0.01Ω-200Ω	0.01Ω	Split Type 56mm×26mm	Wired network: RS232,RS485 standard communication protocol Wireless network: RS232、RS485、GSM communication protocol	×
MEWOI3800LD	0.01Ω-200Ω	0.01Ω	Split Type 56mm×26mm		×		LCD display,warning function.
MEWOI4000	0.01Ω～2000Ω; 0～600V	0.01Ω,1V		√	400sets		2/3-wires measurement of earth resistance/voltage
MEWOI4000C	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
MEWOI4200	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,0.1V	ø68mm	√	2000sets		2/3/4-wires,selection & dual clamp method to measure the earth resistance,soil resistivity,earth voltage,AC voltage,AC leakage current,warning function.