MEWOI-LX3291S Loop Resistance Tester,High Voltage Switch Resistance Tester Circuit Breaker Contact Resistance tester,Circuit resistance tester,Microhmímetro digital portátil até 100A

High Voltage Switch Resistance Tester Circuit Breaker Contact Resistance Measurement Test Kit

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MEWOI-LX3291S Micro Ohm Meter 100A Contact Loop Resistance Tester Contact Resistance for Testing HV Breaker, Circuit resistance tester,Microhmímetro digital portátil até 100 A


The hand-held Circuit resistance tester is an innovative product. The product is compact, hand-held operation, battery power supply, easy to carry.

The product is mainly used in the measurement of contact resistance and other micro-Euclidean resistance of switch contacts. The test speed is fast and the accuracy is high.


1,Lithium battery power supply, a charge can be continuously tested more than 600 times, the test process is simple and convenient.
2, The maximum output current is 100 A, multi-stage current is optional, and the test range is wide.
3,When doing 100A test, the longest test time can be up to 60 seconds, which can satisfy various field applications.
4, The measuring range is wide and the precision is high. At 100A, it can reach 2000μΩ.
5,Has the open circuit protection, overheating protection and so on perfect protection function.
6,5. 6 inch super-industrial-grade high-brightness color LCD screen, in strong sunlight display is still clearly visible.
7,Equipped with external printer, easy to print data.
8,With native storage and USB disk storage, easy to save data.


Measuring Range

Output Current


Measuring Range

100A  0~5mΩ

80A  0~8mΩ

50A  0~10mΩ

30A  0~20mΩ

Technical Index



Resolution  Ratio


Display Digit

Four and a  half

Test Power  Supply

Constant  current limit voltage,about 2V

Input Voltage

Maximum 5V

Measuring Time

Quick、10~60 seconds optional

Testing Times

More than 600  times(full  charge, fast measurement mode)

Test Line

Resistance  less than 10mΩ

Conditions  Of Use and Shape

working Power  Supply

Built-in  lithium battery or external charger,Charger input 100~240VAC,50HZ/60HZ

Charging Voltage


Charging Current


Charging Time

Abour 3  hrs

Auto Shut Off

5 minutes  automatic shutdown without operation

Instrument  Weight

1.7kg(exclude test lines)

Instrument  Dimension


Environment  Temperature


Relative Humidity

≤90%,no dew

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