The transformer winding deformation tester is used to test the winding deformation of power transformers with voltage levels of 6kV and above, as well as other special purpose transformers. During operation or transportation, power transformers inevitably suffer from various short-circuit currents or physical impacts caused by faults. Under the strong electric force generated by short-circuit currents, the transformer windings may lose stability, leading to deformation phenomena such as local twisting, bulging, or displacement, which will seriously affect the operation of the transformer. This instrument uses frequency response analysis method to measure the winding deformation of transformers according to the national power industry standard DL/T911-2016 and the international electrical standard IEC60076-18. It detects the amplitude frequency response characteristics of each winding of the transformer and compares the detection results vertically or horizontally. Based on the degree of change in the amplitude frequency response characteristics, it determines the possible deformation of the transformer winding.

This system consists of a measurement part and an analysis software part. The analysis part is completed by a laptop, and the measurement part is connected to the laptop through a USB cable.

▶ Using the sweep frequency method to measure the characteristics of transformer windings, without lifting or disassembling the transformer cover, by detecting the amplitude frequency response characteristics of each winding, the distortion, bulging, or displacement of windings can be accurately measured for transformers of 6kV and above.

▶ Fast measurement speed, taking 1-2 minutes to measure a single winding.

▶ The frequency accuracy is very high, with a frequency accuracy of 0.001%.

▶ Using digital frequency synthesis for higher frequency stability.

▶ Adopt 5000V voltage isolation to fully protect the testing computer.

▶ Can load 9 curves simultaneously, automatically calculate the relevant parameters of each curve, diagnose the deformation of the winding, and provide diagnostic reference conclusions.

▶ The analysis software used has powerful functions, and the software and hardware indicators meet the power industry standard DL/T911-2016 and the international electrical standard IEC60076-18.

▶ Using the Windows platform, compatible with Windows 2000/Windows XP/Windows 7/Windows 8/Windows 10.

▶ Using a database to save test data, the management of test data is simple and convenient.

▶ The software management function is powerful, fully considering the needs of on-site use. Automatically save and export measurement data to generate Word version test reports (with corresponding Office software installed) or JPG image reports, making it convenient for users to generate test reports.

▶ The software has a high degree of intelligence, and after the input and output signals are connected, all measurement work can be completed with just one key press.

▶ The software interface is simple and intuitive. The analysis, storage, report export, printing and other menus will only automatically pop up the next required menu after completing the current step, which is more convenient.

▶ Measurement speed: 1 minute to 2 minutes for single-phase winding

▶ Output voltage: Vpp-25V, automatically adjusted during testing

▶ Output impedance: 50 Ω

▶ Input impedance: 1M Ω (with a built-in 50 Ω matching resistor in the response channel)

▶ Sweep frequency range: 10Hz-2MHz

▶ Frequency accuracy: 0.001%

▶ Sweep frequency method: linear or logarithmic, sweep frequency and number of points can be set arbitrarily

▶ Curve display: amplitude frequency curve

▶ Wide measurement dynamic range: -120dB~20dB

▶ Supply voltage: AC220V ± 10%