High Precision Micro Ohmmeter

HTHL-100P Micro Ohmmeter

Suitable for high and low voltage switch contact (loop) resistance, cable line DC resistance value of high precision measurement, also suitable for other need large current, micro resistance measurement occasions.

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Product Introduction

At present, the conventional QJ44 double-arm DC bridge is widely used in power system to measure contact resistance, but the testing current of this kind of bridge is only mA level, so it is difficult to find the defect of reducing the cross-sectional area of the loop conductor. When measuring the contact resistance of the conductive circuit of the high voltage switch, due to the influence of the oil film and oxide layer between the contacts, the measured value is several times too large to truly reflect the contact resistance value. To this end, the latest Ministry of Power standard DL/T845.4 -- 2004 "resistance measuring device general technical conditions: Circuit Resistance Tester and the new version of Verification regulation JJG1052-2009 "Circuit Resistance Tester and Direct Resistance Tester Verification Regulation" stipulate that the measuring current of contact resistance such as switch (isolation) and circuit breaker shall not be less than 100A DC and the minimum current maintenance time shall not be less than 60S to ensure the accuracy of test results.

The instrument operating panel adopts ergonomic design, in line with operating habits, the use of high frequency switching power supply and digital circuit technology, suitable for the measurement of switching control equipment circuit resistance. The test current is 100A DC recommended by the national standard. The circuit resistance can be measured directly under the DC 100A condition, the test results are displayed with a large screen LCD, and has data storage, output printing, time setting and other functions, and another 50A gear for users to choose; Is the only domestic can reach 0.01μΩ resolution and very stable contact resistance tester, performance more than imported large current micrometer. Meet the requirements of high voltage switch maintenance and circuit resistance test in power and power supply departments.

Product nickname:Contact resistance tester,Switching loop resistance tester,Contact loop resistance tester,Contact (loop) resistance tester,High Precision Micro Ohmmeter

Product Parameters

Technical Parameters

Measuring range 0~2999.9μΩ
Resolution 0~99.99,0.01μΩ ; 100.0~2999.9,0.1μΩ
Test current DC50A, 100A two-speed fixed output
measurement accuracy ±(0.5% rd+2d)
Continuous working time 5s~599s
Display method Large screen Chinese LCD display
communication mode U disk dump
Working power AC220V±10% 50Hz
Total power 600W
Maximum storage record 200
working environment temperature-10℃~40℃,humidity:≤80%RH
Dimensions 360×300×250 mm3
Weight 8kg(No attachments)

1. The appearance of the product is subject to the actual product. The Technical Parameters and model numbers are subject to change without notice. If there is misappropriation or copying, legal liability will be pursued.

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Product Characteristics

High Precision Micro Ohmmeter High Precision Micro Ohmmeter High Precision Micro Ohmmeter High Precision Micro Ohmmeter High Precision Micro Ohmmeter High Precision Micro Ohmmeter High Precision Micro Ohmmeter High Precision Micro Ohmmeter High Precision Micro Ohmmeter

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Product Certificate

Enterprise products in strict accordance with international and national standards and rules of industry production, through the national, provincial and municipal electric power research institute and electric power authorities detection, measuring center, fully passed the ISO9001 international quality management system certification, the licence for manufacturing measuring instruments of the People's Republic of China, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, GB/T45001-2020 occupational health and safety management system requirements.

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