Electric tester HZ-3310D

resistancestator windingfor transformers

Testing the DC resistance of a transformer is a mandatory procedure during the ex-factory inspection of semi-finished and final products, as well as during installation, acceptance testing, and preventive maintenance conducted by the electric power department. This test effectively identifies manufacturing defects such as improper material selection for transformer coils, poor welding, loose connections, missing strands, and broken wires, as well as potential issues that may arise after operation. To meet the demand for rapid measurement of transformer DC resistance, our company has developed a new generation of DC resistance testers based on our technological expertise. This instrument incorporates advanced power technology and is characterized by its compact size, lightweight design, and high output current. The device is controlled by a microcontroller, which enables automatic self-inspection, data processing, and display functions. It also features automatic discharge and audible alarm indications. The tester offers high accuracy, ease of operation, and the ability to quickly measure transformer DC resistance. Performance Characteristic 1.This instrument can automatically select the output current, with a maximum output of up to 10A. 2.The measurement range is wide (0Ω–100Ω), allowing for the measurement of inductive DC resistance in transformers, current transformers, and voltage transformers. 3.The display features a 480×272 high-resolution 65K color screen, ensuring clear and legible data presentation.