DC Resistance Tester with Touchscreen and One-Button Operation

XHZ1340A

DC resistance testing is mandatory for transformers during manufacturing (semi-finished/finished products), installation, handover, and preventive maintenance, detecting production defects (e.g., coil material/welding issues, loose connections, missing strands, breaks) and operational hazards. To enable rapid DC resistance measurement, our company has developed the Transformer DC Resistance Tester with in-house technology. This new-generation tester integrates magnetizing method testing, three-phase testing (Yn, Y, △), and demagnetization, ideal for large power transformers. It features a true-color high-resolution large LCD screen, touch + shuttle knob operation for on-site convenience, Chinese menu prompts for intuitive use, one-time wiring for all tests, fast speed, high accuracy, and a wide range.

Performance Characteristics

★ Three-phase measurement can be used to test Yn, Y, and Δ windings, and the three-phase imbalance rate can be calculated.

★ The test power supply has a maximum output current of 40A and a test range of 0-25kΩ, meeting the testing requirements of most transformers. It also integrates magnetization and demagnetization functions to meet various on-site testing needs.

★ The test process can automatically calculate the resistance change rate at 5S, 15S, and 30S, assisting testers in judging the stability of test data and preventing misreading.

★ The instrument has multiple protection functions, including 380V incorrect connection protection, back EMF protection, open circuit protection, and power failure protection, as well as a grounding wire disconnection alarm function.

★ The instrument is equipped with a thermal printer, with a built-in storage capacity of 200 data entries and support for large-scale storage via USB flash drive.

★ An industrial-grade 7-inch true-color large screen display with a clean and simple design, full touch control, and one-button shuttle operation, creating a comfortable and convenient human-machine interaction experience.

Application Sites:

♦ Power systems: power generation, transmission, transformation, and distribution;
♦ Factories and Mines: large-scale manufacturing plants and various mining companies;
♦ Metallurgy and Petrochemicals: smelting, chemical processing, water treatment, etc.;
♦ Transportation: ports/railways/highways/airports and municipal streetlights, etc.;
♦ Enterprises and Institutions: logistics departments of large enterprises and institutions;
♦ Construction Industry: large construction and property management companies;
♦ Power Installation and Testing: power installation and commissioning companies of all levels;