Loop tester HZ-5100

resistancefor electrical appliancesfor cables

• Test Current: 50 A / 100 A, constant high-precision source • Measurement Range: 0–100 mΩ (50 A), 0–50 mΩ (100 A) • Resolution: 0.1 µΩ, Accuracy ±(0.5% ±2) • Display: 7-inch high-brightness color LCD, English/Chinese switchable • Data Storage: up to 1000 records, USB, Bluetooth, RS232, U-disk support • Protection: reverse potential, disconnection, overheating, power failure • Dimensions/Weight: 360×290×170 mm, 5.6 kg tester + 6.5 kg wire box The HZ-5100 Contact Resistance Tester is designed for fast, precise measurement of micro-ohm contact resistance in high-voltage switches, power cables, and welded joints. Built with high-frequency, high-power switching supply technology, it delivers stable constant current and eliminates the influence of test lead resistance through a four-terminal method. Results are clearly displayed on a 7-inch touch LCD, with dual-language interface and integrated micro-printer for immediate reporting. Compact and reliable, the tester offers intelligent power management, ensuring energy efficiency and low heat generation. It provides multiple communication options including USB, Bluetooth, and RS232, supporting data transfer, U-disk backup, and mobile phone software control. With robust protective functions against reverse potential, overheating, and disconnection, it is suitable for both field testing and factory applications, meeting the latest IEC and DL/T845.4-2004 standards for high-voltage switch maintenance and manufacturing.