High-Precision Loop Resistance Tester
Darui Electric recommends：
Loop (contact) resistance measurement is an essential part of electrical testing.. According to the "Power Equipment Handover and Preventive Test Regulations," switchgear conductive circuit resistance measurement requires a test current of no less than 100A. The intelligent loop tester is suitable for high-precision measurement of HV switch contact resistance (loop resistance), and other applications requiring high current and micro-resistance measurement. Standard: DL/T845.4-2004. Widely used in electrical manufacturing, power operations, research institutes, and universities.
Features
l Uses the latest power supply technology for long-duration continuous high current output, with flexible selection of 50A, 100A, 150A, and 200A.
l Features compact size, lightweight, strong anti-interference, high precision, easy operation, and comprehensive protection functions.
l Uses precision instrumentation op-amps and high-accuracy quadruple-integration A/D converters with a high-performance 16-bit MCU. Auto-switches amplification based on signal strength for guaranteed accuracy.
l Human-machine interactive full-keyboard operation with intelligent full-process automation.
l 320×240 LCD display, high-speed thermal printer.
l Built-in real-time calendar clock provides timestamps for printing and data storage.
l Data storage and history browsing, stores up to 200 data sets with power-loss protection.
l Ultra-wide range, maximum measurement range up to 0-4mΩ.
Technical Parameters
Output Current: 50A, 100A, 150A, 200A (4 ranges selectable)
Power Supply: AC 220V±10% 50Hz±2%
Resolution: 0.01μΩ
Range: 0~4mΩ (50A range)
0~2mΩ (100A range)
0~1.33mΩ (150A range)
0~1mΩ (200A range)
Note: 500A loop resistance tester can be customized upon request.
Note: The above information and technical parameters are compiled and published by Yangzhou Darui Electric Co., Ltd.
