When performing on-site winding deformation diagnosis, a common situation is that the frequency response curves of the same transformer measured at different times show differences in shape, but a single measurement itself shows no obvious abnormality, resulting in insufficient basis for judgment. Such problems are often not caused by instrument failure, but by incomplete data recording dimensions and the failure to save environmental conditions synchronously. The BRF-6500 Transformer Winding Deformation Tester is designed around traceability at engineering sites. The following answers several common questions from the perspective of technical parameters.
The device has a sweep frequency range of 0.5kHz to 2MHz. The sweep method supports both linear and logarithmic options, and the sweep interval and number of points can be set arbitrarily. For low-voltage windings of distribution transformers, the number of points in the low-frequency band can be increased; for high-voltage windings of power transformers, sufficient resolution can be maintained in the medium- and high-frequency bands. The frequency accuracy is better than the set value requirement, ensuring comparability of curves from multiple measurements.
During the sweep, the instrument synchronously records voltage, current, and impedance values. After the test is completed, environmental condition parameters are automatically saved, including temperature, humidity, and wiring method markings. During diagnosis, historical data can be retrieved for trend comparison to observe the curve offset of the same measurement point across different maintenance cycles, rather than drawing conclusions based solely on a single curve shape.
The software is organized according to on-site workflows and supports test task filing, measurement point numbering, and superimposed curve display. Environmental condition parameters are stored together with the data, providing a basis for subsequent winding deformation diagnosis. Data can be exported in common formats, facilitating further analysis by technical engineers in an office environment.
It is suitable for preventive tests of transformers in power plants, substations, and industrial enterprises, winding condition checks after short-circuit impacts, and comparative tests before and after transportation and installation. Tests can be carried out on distribution transformers of 35kV and below as well as power transformers of higher voltage levels, with the specific range selected according to the parameters of the winding under test.
