MEWOI4660 DC Current Resistance Tester(Microhmmeter 10A/20A)

MEWOI4660B-Transformer winding resistance,DC Current Resistance Tester(Microhmmeter 20A)

10A Transformer DC Resistance Tester

Main Features：： 1,Range: 10.0uΩ～50.00kΩ,2, Maximum test current:20A

Model No.:： MEWOI4660B

Email：mewoi@mewoi.com

Whatsapp: +8618620373879

Overview

Applied to measuring transformer winding resistance; grounding continuity resistance; cable & conductor resistance;contact resistance of switches, connectors and relays; metal riveting resistance; winding resistance of coil, motor andtransducer: connection resistance between metal components; welding point resistance; Battery parallel connectionresistance; wire length measurement and calculation, etc.

Main Features

Model No.: MEWOI4660
Range : 10.ouQ2 ~50.00KQ
Test Current : 10A,1A,100mA, 10mA, 2mA, 1mA,Automatic
Max Test Current : 10A
Measurement Method : Precision 4-wire method, 2 chennal A/D detecting simultaneously
Power Supply : DC 7.4V 5200mAh, rechargeable lithium battery, full charge about 8.4v

Functions

The tester is controlled by a high-speed single-chip microcomputer,with fast response speed, stable measurement and easy operation.
With two measuremert modes-automatic measurement mod . the estcurent can be automatcallyselcted accotding to the load ,Maneal meauremert mode There ave 7 gearstest currents can be chose from 20A,10A,1A,100mA, 10mA, 2mA and 1mA.
Exuip with 430x854true colorLCDtouchscen which is cearvy risile under stongliht and can be usedfor both touch screen and panelbutons Llarge capacty rechargeablelithium battery and waterproof case are suitable for outdoor use.
With Bluetooth communication function,can do test operations or view the test result on the mobile phone after install the APP.
The tester has USB interface and monitoring software, which can communicate with the computer.
The protection function i perfect which canrelably protect the impact of the backEMF on the instrument, and the performance is more reliable.
with the function of discharging,. which can automatically discharge after the test, and the discharge indication is clear to avoid misoperation.
With the function of converting resistance, which can compensate and convert the temperature material of the test product.
Alarm function, the resistance alarm value can be set.
Automatic shutdown function, the tester will automatic shutdown after 15 minutes without any operation.

Measurement Range&Accuracy

Measuring range	Accuracy	resolution
1.0uΩ～1000.0uΩ	0.2%±2uΩ	0.1uΩ
1.000mΩ～10.000mΩ	0.2%±0.02mΩ	1uΩ
10.00mΩ～100.00mΩ	0.2%±0.2mΩ	0.01mΩ
100.0mΩ～1000.0mΩ	0.2%±2mΩ	0.1mΩ
1.000Ω～10.000Ω	0.2%±0.02Ω	0.001Ω
10.00Ω～100.00Ω	0.2%±0.2Ω	0.01Ω
100.0Ω～1000.0Ω	0.2%±2Ω	0.1Ω
1.00kΩ～50.00kΩ	0.2%±0.2kΩ	0.01kΩ

Note: The reference condition of the error range in the above table: 25°C±5°C, the maximum error in the working environment is not more than 2 times.

Technical specifications

Function	Used to measure transformer winding resistance; cable wire resistance; contact resistance of switches, connectors, and relays; metal riveting resistance; winding resistance of coils, motors, and transformers; connection resistance between metal components; electric welding point resistance; parallel connection of batteries resistance; wire length measurement, etc.
test method	Precise four-wire method, 2-way A/D simultaneous detection
test mode	automatic / manual
power supply	DC 22.2V 5200mAh rechargeable lithium battery
Range and test current	1.0uΩ～50.00kΩ Automatic AUTO
	1.0uΩ～20.00mΩ 10A
	10.00mΩ～200.0mΩ 5A
	100.0mΩ～2.000Ω 1A
	1.000Ω～20.00Ω 100mA
	10.00Ω～200.0Ω 10mA
	100.0Ω～50.00kΩ 1mA
highest resolution	0.1uΩ
The output voltage	24V MAX
Test current gear	10A, 5A, 1A, 100mA, 10mA, 1mA, AUTO
measure time	Sampling AD rate 1 second/time
Alarm settings	Alarm threshold setting range: 1mΩ～2500Ω, 0Ω does not activate the alarm function, and does not activate the alarm function every time it is turned on
Warning	When the test value exceeds the alarm setting value, the buzzer will sound an alarm prompt
overflow display	Over-range overflow function: digital 9999 over-limit display
charging indication	The indicator light on the charger is red when charging, and green when fully charged
low voltage indication	When the battery voltage drops to DC 22.2V±0.1V, the low battery symbol will be displayed to remind the meter to charge in time
data storage	600 groups (data will not be lost when power off or battery replacement)
data retention	Automatically keep displaying the measured results after each test
backlight	have
Converted Resistance Calculation	With the function of converting resistance at 75°C, it can compensate and convert the temperature material of the test product
discharge function	Automatic discharge after test, clear discharge indication, avoid misoperation
Automatic shut-down	After setting the automatic shutdown, it will automatically shut down after 15 minutes of no operation
test line	1 each red and black
LCD size	108mm×65mm
Host size	280mm×260mm×160mm
quality	About 3060g (including battery); total mass: about 5.8kg (including accessories)
Working temperature and humidity	-10℃～40℃; below 80%RH
storage temperature and humidity	-10℃～60℃; Below 70%RH
degree of protection	IP65 (when the cover is closed)
bluetooth communication	have
USB interface	With USB interface, software monitoring, stored data can be uploaded to the computer
Pressure resistance	AC 3700V/rms (between shell and screw)
Suitable for safety regulations	IEC61010-1, CAT Ⅲ 600V, pollution degree 2, JJG724-1991 "Verification Regulations for DC Digital Ohmmeter", JJG166-1993 "Verification Regulations for DC Resistors", "DL/T967-2005 Loop Resistance Tester and DC Resistance Fast Tester Verification Regulations"

Selection Guide

Product number	Measuring range	highest resolution	Maximum test current
MEWOI4660	10.0uΩ～50.00kΩ	0.1uΩ	10A
MEWOI4660B	1.0uΩ～50.00kΩ	0.1uΩ	20A

label: 10A Transformer DC Resistance Tester