The KDRB-IV Transformer Winding Deformation Tester (Integrated) uses the Internal Fault Frequency Response Analysis (FRA) method to accurately determine internal faults in transformers based on the measurement of characteristic parameters of the internal windings.

The KDRB-IV transformer winding deformation tester quantifies the response changes of the internal winding parameters of the transformer in different frequency domains, and determines the degree of change of the transformer's internal winding based on the magnitude of the change, the amplitude and region of the frequency response change, and the trend of the frequency response change. Based on the measurement results, it can then determine whether the transformer has been severely damaged and whether major repairs are needed.
 

1. The transformer winding deformation tester consists of a high-precision measurement system composed of a laptop and a microcontroller. It has a compact structure, simple operation, and complete testing and analysis functions. It can be operated and used by referring to the user manual or after short-term training.

2. The acquisition control adopts high-speed and highly integrated microprocessors.

3. Adopting USB communication interface, plug and play, convenient and fast connection;.

4. Integrate ARM processors with measuring instruments, eliminating the need for mobile computers at the measurement site.

5. The hardware core adopts DDS dedicated digital high-speed scanning technology, which can accurately diagnose faults such as winding distortion, bulging, displacement, tilting, inter turn short circuit deformation, and inter phase contact short circuit through testing.

6. High speed dual channel 16 bit A/D sampling (on-site testing changes the tap changer, and the waveform curve shows significant changes).

7. The signal output amplitude is adjusted by software, with a maximum peak amplitude of ± 10V.

8. The computer generates electronic documents (Word) of the detection results

9. There is a dedicated testing fixture that does not require testing matching units, ensuring reliable and accurate testing connections and good shielding of the testing system;

10. Dedicated test ground wire, with plug-in function and outer insulation;

11. Specialized inspection and testing accessory equipment;

12. It has flexible scanning methods, supports linear/logarithmic scanning methods, and provides different resolutions for low and high frequency bands;

13. The backend adopts database technology, and the test data is directly stored in the database for easy searching, analysis, and comparison;

14. Lifetime upgrade and technical consultation of testing system software

15. Data compatibility: Compatible with data from different manufacturers, can be converted into TDT6 recognizable data format;

16. Support the import and export of batch data, which can be exported as Excel format files and exchanged with other testing systems;

17. Test reports can be directly generated in Word format, and test curves can be saved as images;

18. It has the function of segment correlation judgment, which can accurately describe the degree of difference in frequency response characteristic curves;

19. Automatic data analysis system for detection,

20. Compare the winding similarity between phases A, B, and C horizontally,

The analysis result is:

① Good consistency

② Good consistency

③ Poor consistency

④ The consistency is very poor,

21. Longitudinal comparison of A-A, B-B, C-C: Comparing the winding deformation between the original data and the current data in phase, the analysis result is:

① Normal winding

② Mild deformation

③ Moderate deformation

④ Severe deformation

22. It can automatically generate Word electronic documents for saving and printing.

　

3.1 Scanning method:

(The instrument has a dual measurement system of linear sweep frequency measurement and segmented sweep frequency measurement)

(1) Linear scanning distribution

Sweep frequency measurement range: 0.02-2000kHz

Measurement points: 5000 sweep frequency points (adjustable), resolution of 0.1kHz

(2) Segmented sweep frequency measurement distribution

Sweep frequency measurement range: (0.02kHz) - (2MHz), 2000kHz sweep frequency point;

(0.5kHz) - (10)