A transformer tester is a device used to determine the performance and safety of transformers. Widely used in the power industry, it assesses the operating status of transformers and plays a crucial role in ensuring the operation of the power system. By measuring and analyzing a series of transformer parameters, potential equipment problems can be identified in a timely manner, guiding maintenance and repair work.
A field transformer capacity (characteristic) tester is an instrument used to measure the capacity and type of transformers in the field. Using its built-in power supply, it can measure the capacity, type, and load loss of various types of transformers, including oil-immersed, dry-type, and special transformers. During use, the primary and secondary voltage values of the transformer can be input. For transformers above 30KVA, it can measure characteristic parameters such as no-load loss and load loss. The functions of a transformer tester include capacity measurement and the ability to detect and analyze transformers through various testing methods. Common test items include insulation resistance testing, turns ratio testing, load loss (short-circuit loss) testing, no-load current and no-load loss testing, DC resistance testing, partial discharge testing, and dielectric loss testing. This instrument weighs approximately 2.5kg.
Modern transformer testers typically have high measurement accuracy, fast response speed, and good stability. Many instruments feature large LCD screens, Chinese menus, and operation prompts, and are equipped with data storage, printing, and uploading functions. Some models integrate intelligent technologies, such as automatic waveform distortion correction and temperature correction, and support wireless data transmission and remote monitoring.
Based on testing principles, functional focuses, and form factors, transformer testers can be categorized into several types. According to the main test object or parameter, they can be divided into transformer capacity testers, transformer turns ratio testers, transformer DC resistance testers, transformer no-load/load testers, and comprehensive transformer testers. According to product form factors, they can be divided into portable and benchtop types, with portable instruments commonly used for field testing.
