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.
