Product Introduction

The LDHL-100B High-Voltage Switch Contact Resistance Tester is designed in accordance with the People's Republic of China's electric power execution standard DL/T845.4-2004, combining high-frequency switch power supply technology with digital circuit technology. The LDHL-100B High-Voltage Switch Contact Resistance Tester is suitable for measuring contact resistance in switch control equipment. It uses a test current of 100A DC, as recommended by the national standard. Contact resistance can be directly measured under 100A DC, with test results displayed on a large-screen LCD screen, and featuring data storage, output printing, and time setting functions. There is also a 50A range available for user selection. The High-Voltage Switch Contact Resistance Tester offers accurate measurement and stable performance, meeting the requirements of power and supply departments for on-site high-voltage switch maintenance and contact resistance testing equipment in high-voltage switch factories.

Product Alias: Contact Resistance Tester, Switching Circuit Resistance Tester, Contact Loop Resistance Tester, Resistance Loop Tester, Intelligent Loop Resistance Tester, Contact Resistance Gauge, Contact (Loop) Resistance Tester, Loop Resistance Tester

Product Features

(1) High Current: The high-voltage switch contact resistance tester employs advanced switch power supply technology, capable of continuously outputting high currents for extended periods. It overcomes the drawbacks of pulsed power sources with instantaneous currents, effectively piercing the oxidation film on switch contacts for reliable test results.

(2) High Stability: Under severe interference conditions, the data behind the liquid crystal screen can remain stable within ±1 character, with consistent readings and good repeatability.

(3) High Precision: Utilizing dual-channel high-speed 16-bit Σ-Δ AD sampling and advanced digital signal processing technology, the resolution reaches 0.01μΩ. It is currently the most stable high-voltage switch contact resistance tester in China that can achieve a 0.01μΩ resolution, outperforming imported micro-ohmmeters.

(4) Intelligentization: Utilizing imported high-performance CPUs, the system automatically switches the range based on signal size during measurement, ensuring the accuracy of the product's testing. Over-temperature protection circuit automatically stops output current when the instrument exceeds the set temperature, ensuring safe operation of the instrument.

(5) High Quality: All critical components are made with imported parts. The temperature compensation circuit, cleverly designed, effectively eliminates the impact of environmental temperature on measurement results. The use of military-grade connectors enhances vibration resistance.

(6) Powerful Functionality: Offers a choice of current between 50A and 100A, with test time adjustable from 5s to 599s. This overcomes the shortcomings of other similar instruments, which cannot set measurement time or have an insufficient continuous working time, far surpassing the performance of other similar instruments.

(7) User-friendly Interface: The high-voltage switch contact resistance tester allows for easy data entry via mouse rotation, enabling quick and convenient settings of the instrument's date and time, real-time saving of measurement data, and immediate printing of results.

(8) Multiple Communication Methods: Capable of communicating with a computer via RS232 serial port (9 pins) or USB data cable, uploading measurement data to the computer for further analysis and processing by the test personnel.

(9) The High Voltage Switch Contact Resistance Tester is easy to use: compact in size, lightweight, and convenient for carrying.