This instrument is a specialized device for eliminating residual magnetism in large power transformers. It plays an extremely important role in protecting transformers from the impact of inrush currents, ensuring safe operation, and extending the service life of transformers.

During normal operation and testing, residual magnetism can be generated in the core of large-capacity transformers. When the transformer capacity is large, the harm caused by residual magnetism also increases accordingly. Residual magnetism may lead to maloperation of relay protection devices, causing transformer startup failures. Additionally, residual magnetism can result in abnormal test results and affect power quality after power transmission. Therefore, when residual magnetism causes abnormal phenomena or faults in transformers during operation, attention should be paid to this issue. To address this, our company has developed a series of transformer demagnetization products. Our company is one of the earlier manufacturers in China to research and produce demagnetization instruments, accumulating a significant amount of practical experience.

Using advanced and reasonable composite current method technology, it can quickly demagnetize power transformers and current transformers. For three-phase transformers, demagnetization is required for only one phase, making the process more time-saving and efficient.

The instrument uses advanced composite current demagnetization technology, resulting in minimal current impact during the demagnetization process.

High demagnetization efficiency; for three-phase transformers, only one phase needs to be demagnetized, significantly saving time.

The demagnetization progress percentage and indicator bar are intuitive and clear, displaying the demagnetization current curve graph.

Simple wiring; it can directly use the test leads from DC resistance testing for demagnetization.

Digital current adjustment is employed, providing high precision control of the current.

A 5-inch color touchscreen control is used, making operation easier.

Test results are automatically stored, recording demagnetization current data without the need for manual storage.

Reports can be directly printed and saved to a USB drive.

Highly intelligent; after setting the parameters, pressing a single button completes all measurement tasks.

The software interface is simple and intuitive, with clear menus for storage, report export, printing, etc.

Input Type: Current Method

• Output Voltage: Vpp-40V, automatically adjusted during testing.
• Output Current: 5A, 4A, 3A, 2A, 1A, can be selected as needed.
• Demagnetization Progress: 0-100%.
• Minimum Resolution: 0.1%.
• Power Supply Voltage: AC100V-240V ±10%.
• Frequency: 50Hz/60Hz.
• Operating Environment: -10°C to 50°C, ≤85%RH.