Power Transformer Winding Deformation Analysis Equipment Low Voltage Short-Circuit Impedance Test

The short-circuit impedance is an important parameter of the transformer. The short-circuit impedance method is the traditional method to judge the winding deformation. According to the regulations of GB1094.5-2003 and IEC60076-5:2000, the change of the short-circuit reactance is the only criterion for judging whether the transformer winding is deformed.

The low-voltage short-circuit impedance test is the most direct way to determine whether the transformer is impacted by short-circuit current during operation, or the transformer is impacted by mechanical force during transportation and installation. It is the most direct method to check whether the winding is deformed. It is important for judging whether the transformer can be put into operation. Significance is also one of the basis for judging whether the transformer requires disassembly inspection.

Weshine invented the VS-6309 Series is used to measure short circuit impedance and other associated parameters in high voltage power transformers. It is capable of performing measurements in single- or three-phase transformers. Useful in detecting and diagnosing winding deformation. VS-6309 in addition to measuring short-circuit impedance, it can also have the functions of no-load test and load test, suitable for low-voltage load impedance testing in power transformers (single-phase or three-phase) delivery, overhaul, pre-test and handover test. The principle of the basic item in the conventional test project is to test the short-circuit impedance (%) of the power transformer on site and compare it with the nameplate value or factory value. After the factory test, the serious fault current during transportation, installation and operation can be found. Defects caused by winding displacement and deformation.

With the input parameters of this transformer, single-phase and three-phase tests can be performed and the dynamic and stable state parameters of the transformer windings (Zke, Zk, Xk, Lk) can be automatically calculated. The test results are very intuitive. It is a fast testing instrument for field testing of transformer winding deformation.

Видео Power Transformer Winding Deformation Analysis Equipment Low Voltage Short-Circuit Impedance Test канала Weshine Electric