manufacturing process

Preparation of Raw Materials
The production of dry type transformers begins with the preparation of various raw materials, mainly including copper wires, iron cores, insulating materials, and enclosures. Copper wires require high purity, and the iron cores need precise cutting.
Iron Core Processing and Assembly
During processing, steel sheets are cut, stacked and insulated according to specifications. The precise manufacturing of the iron core is essential for enhancing the transformer's efficiency and reducing energy consumption. After pre-treatment, the iron core will be assembled with insulating materials.


Coil Winding and Installation
In the winding process, particular attention must be paid to the number of turns, wire diameter, and the tightness of the winding. These factors directly affect the transformer's ratio and efficiency. Once wound, the coils are precisely installed onto the iron core and undergo insulation treatment to prevent current leakage or short circuits.
Insulation Treatment
To enhance the transformer's safety and stability, high-performance insulating materials are used for treatment. These materials possess properties such as high temperature resistance, corrosion resistance, and high dielectric strength.


Impregnation and Curing
Following the assembly of the windings and iron core, the transformer unit undergoes an impregnation process. This treatment effectively enhance the transformer's insulation, preventing short circuits between internal conductors. Furthermore, it strengthens the transformer's resistance to vibration and moisture ingress, ensuring long-term operational stability in harsh environments. A subsequent curing stage solidifies the impregnation to further improve its overall durability.
Testing and Inspection
Upon completion of manufacturing, every transformer undergoes rigorous testing and inspection. These tests include electrical performance tests, temperature rise tests, load tests, etc., to ensure that all parameters of the transformer meet the standards. Only after these strict inspections can the transformer be released from the factory and put into use.

