Product Overview

1.   Data acquisition and control are managed by a high-speed, highly integrated microprocessor.

2.   Communication between the instrument and a laptop computer is established via a USB interface.

3.   The core hardware module employs dedicated high-speed Digital Direct Synthesis (DDS) sweep frequency technology (originating from the USA). Through testing, it can accurately diagnose faults such as winding distortion, bulging, displacement, tilting, inter-turn short circuits (deformation), and inter-phase contact short circuits.

4.   Features high-speed, dual-channel 16-bit A/D sampling (during field testing, changing the tap changer results in distinct changes to the waveform curves).

5.   The signal output amplitude is software-adjustable, with a maximum peak amplitude of ±10V.

6.   The computer automatically analyzes the test results and generates an electronic report (in Word format).

7.   The instrument features a dual-measurement system capable of both linear sweep frequency measurement and segmented sweep frequency measurement, thereby accommodating the measurement modes of the two prevailing technical schools of thought currently practiced domestically.

Product Features

1.  The transformer Winding Deformation Tester consists of a measurement unit and analysis software. The measurement unit is controlled by a high-speed single-chip microcontroller and comprises signal generation and signal measurement modules. The measurement unit connects to a tablet or laptop via a USB interface.

2.  During the testing process, it is only necessary to disconnect the transformer's connecting busbars; all tests can be completed without the need to lift the transformer's cover or perform any disassembly/reassembly operations.

3.  The instrument features a versatile linear frequency sweep measurement system. The linear sweep frequency range extends up to 10 MHz, with selectable frequency sweep intervals of 0.25 kHz, 0.5 kHz, and 1 kHz, providing a more comprehensive basis for analyzing transformer deformation.

4.  The instrument is highly intelligent and user-friendly, featuring various functions such as automatic range adjustment and automatic sampling frequency adjustment.

5.  The software operates on the Windows platform and is compatible with Windows 98, 2000, XP, and Windows 7 operating systems. It provides users with a highly convenient and intuitive graphical interface.

6.  The system supports comparative analysis of historical curves, allowing multiple historical curves to be loaded simultaneously for observation. Users can specifically select any curve for both horizontal and vertical analysis. It is equipped with an intelligent expert analysis and diagnostic system capable of automatically diagnosing the condition of transformer windings; it can load up to six curves simultaneously, automatically calculate relevant parameters for each curve, automatically diagnose the nature of any winding deformation, and provide diagnostic reference conclusions.

7.  The software features robust data management capabilities, designed with the practical needs of field operations in mind. It automatically saves environmental condition parameters to serve as a reference basis during transformer winding deformation diagnosis. Measurement data is automatically saved to disk, and the software includes a color printing function to facilitate the generation of test reports for users.

8.  The software features a highly user-centric design; most measurement conditions are configured via selectable options. Detailed transformer parameters can be saved for diagnostic reference, eliminating the need to manually enter this information on-site; such details can be added or modified at a later time, making the workflow significantly more convenient.

9.  The software demonstrates a high degree of intelligence: once the input and output signals are properly connected and the condition parameters have been configured, the entire measurement process can be completed automatically. Furthermore, users can access and compare historical waveform curves—or stop the measurement process—at any point during the active measurement session. 10. The time required for measurement per phase is less than 60 seconds; for a power transformer featuring high-, medium-, and low-voltage windings (regardless of capacity or voltage class), the total time required to perform winding deformation measurements does not exceed 10 minutes.

11. When measuring a transformer, the personnel responsible for connecting the wiring may route the signal input and output leads in any manner without affecting the measurement results; furthermore, these personnel may remain positioned atop the transformer tank—without the need to descend—thereby reducing labor intensity.