Demagnetization Effect Verification Fast Three-Phase Test Transformer Demagnetization Tester

The power transformer transformer degaussing instrument XHXC105A is a special equipment for eliminating the hazards of residual magnetism after the DC resistance test of large power transformer transformers. It plays an extremely important role in protecting power transformer transformers from the impact of excitation inrush current and ensuring safe operation.

Due to the inherent hysteresis phenomenon of ferromagnetic materials, residual magnetism will remain in the iron core after performing operations such as voltage ratio and DC resistance measurements on the power transformer. Due to the existence of residual magnetism, when the transformer is put into operation, the residual magnetism of the iron core will saturate the transformer core for half a cycle, generating a large number of harmonics in the excitation current. This not only increases the reactive power consumption of the transformer, but may also cause the relay protector to malfunction. , causing certain economic losses. Therefore, we must perform degaussing work before the transformer is put into operation to ensure the safe and normal operation of the transformer.

XHXC105A fully automatic degaussing verification degaussing instrument adds an automatic degaussing mode based on the original series of products, so users do not have to repeat operations. The size of the LCD module is increased, and the degaussing time test function is added to make the display information richer. Two-button operation: red for selection and reset, green for confirmation and start, making operation more convenient. The degaussing time of the product has been increased from the original 30 minutes to less than 4 minutes.

Main performance features

★ Adopts patented technology-DC frequency conversion attenuation principle;

★ The three-phase transformer can achieve the purpose of degaussing only by degaussing the B phase;

★ With automatic flow stabilization judgment and 16-bit AD data acquisition and processing functions;

★ With manual/automatic degaussing mode, a total of 5 degaussing modes;

★ With degaussing judgment and degaussing result reporting functions;

★ Fast degaussing speed - single time increased from 30min to no more than 4min;

★ The degaussing effect is obvious - increased from 80% to more than 90% in a single pass;

★ The current line for DC resistance testing can be directly used to facilitate matching with DC resistance testing;

★ Using English interface, the interface is clear and the degaussing progress is displayed in real time;

★ Suitable for eliminating residual magnetism before large-scale power transformers and transformers of 35kV and above are put into operation; especially for large-capacity transformers with voltage levels of 330kV and above;

★ This product is small in size and light in weight, making it very suitable for use on site.

English version is available