BSBTRC-II Transformer Winding Deformation Tester

Product Introduction

The BSBTRC-II transformer winding deformation tester uses the internal fault frequency response analysis (FRA) method, which is currently being developed and improved in developed countries around the world, to accurately diagnose internal faults in transformers based on the measurement of characteristic parameters of the transformer winding.

After the completion of transformer design and manufacturing, its coil and internal structure are determined. Therefore, for a multi winding transformer coil, if the voltage level is the same and the winding method is the same, the corresponding parameters (Ci, Li) of each coil should be determined. Therefore, the frequency domain characteristic response of each coil is also determined, and the frequency spectra of the corresponding three-phase coils have a certain comparability.

During the testing process, if a short circuit occurs between turns or phases of a transformer, or if a collision occurs during transportation, resulting in relative displacement of the coil, and if the coil deforms due to electromagnetic tension during short circuit and fault states during operation, the distribution parameters of the transformer winding will change, thereby affecting and altering the original frequency domain characteristics of the transformer, such as amplitude changes in frequency response and harmonic frequency point shifts. The HTBX-H Transformer Winding Frequency Response Tester, developed based on response analysis methods, is such a novel non-destructive detection device for internal faults in transformers. It is suitable for internal structural fault detection of 63kV~500kV power transformers.

The 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 in the internal winding of the transformer based on the magnitude of the change, the amplitude and region of the frequency response change, and the trend of the frequency response change. Therefore, the measurement results can be used to determine whether the transformer has been severely damaged and whether major repairs are needed.

For transformers in operation, regardless of whether frequency domain feature maps have been saved in the past, the degree of fault can also be determined by comparing the differences in feature maps between faulty transformer coils. Of course, if a set of original winding characteristic maps of the transformer is saved, it is easier to provide more accurate and powerful basis for the operation status, post accident analysis, and maintenance of the transformer.

The transformer winding deformation frequency response 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.

Product Features

1. The transformer winding deformation tester adopts high-speed and highly integrated microprocessors for data acquisition and control.

2. USB interface for communication between laptop and instrument

3. Wireless Bluetooth interface for communication between laptop and instrument

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

5. High resolution dB measurement, dual channel 16 bit A/D (on-site testing shows significant output changes by changing the tap changer)

6. The signal output amplitude can be adjusted by software, with a maximum peak amplitude of 10V.

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

8. Selecting precision and high stability components, conducting repeated tests on the same phase, with a measurement repetition rate of over 99.5%.

9. Finished circuit board, with special surface treatment, has resistance to water and harmful gas pollution.

10. The transformer winding deformation tester produced by our company has dual measurement system functions of linear sweep frequency measurement and segmented sweep frequency measurement, and is compatible with the measurement modes of two current domestic technology schools.

11. The amplitude frequency characteristics comply with the technical specifications of the national amplitude frequency characteristic tester, and the horizontal axis (frequency) has two types of linear and logarithmic divisions. Therefore, the printed curve can be a linear or logarithmic division curve, and users can choose according to their actual situation.


Note: Due to continuous product updates, the appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice, and our company reserves the right of interpretation; If there is any act of theft or copying, legal responsibility will be pursued.