Low-resistance tester HZ-3120A

stator windingfor transformersindustrial

To meet the needs for rapid DC resistance measurement of transformers, our company has developed the HZ-3120A DC Resistance Tester. The instrument incorporates advanced power supply technology and features a compact design, lightweight construction, high output current, excellent repeatability, strong anti-interference capabilities, and comprehensive protection functions. The entire system is controlled by a high-speed microcontroller, offering a high degree of automation along with automatic discharge and discharge alarm functions. Summary Transformer DC resistance testing is a required procedure during the semi-finished product, finished product, factory testing, installation, overhaul, tap switch change, handover, and preventive maintenance tests performed by the power department in transformer manufacturing. This test checks the quality of the winding joints, identifies any inter-turn short circuits in the windings, and verifies the functionality of the voltage tap switch at each position. It also ensures that the actual position of the tap switch matches the indicated position, checks for broken lead wires, and detects any broken strands in the windings.The instrument provides high-accuracy testing, is easy to operate, and enables rapid measurement of transformer DC resistance. Functional Characteristics 1.The entire system is controlled by a high-speed microcontroller, offering a high degree of automation and simple operation. 2.The instrument features advanced power supply technology with multiple current settings, a wide measurement range, and is suitable for measuring the DC resistance of large and medium-sized transformers.