Transformer Iron Core

The transformer iron core is the key magnetic circuit component of a transformer. It is primarily made by stacking high-quality hot-rolled or cold-rolled silicon steel sheets with high silicon content and coated with insulating paint. Combining the core and the coils forms a complete electromagnetic induction system. The core's material and cross-sectional area determines the transformer's efficiency and power transmission capacity.

At PromiSIS, we use advanced manufacturing techniques and premium raw materials from top-tier suppliers like Baosteel, Wugang, and Ansteel to deliver reliable and energy-efficient transformer cores tailored to your specific needs.

1,Specifications

3. Key dimensional parameters of core design

Core Cross-sectional Area

Determines the magnetic flux capacity of the core, usually calculated based on power and frequency requirements.

Window Area

Provides space for the winding, directly affecting the layout and heat dissipation of the copper wire winding.

Air Gap

especially for toroidal cores and C-shaped cores, the air gap directly affects the magnetic saturation point of the core.

Stacking Factor

Indicates the ratio of the actual effective area of ​​the core to the theoretical cross-sectional area, usually around 0.9.

4,Key Components

Core Body: Made of electrical silicon steel, serving as the primary magnetic conductor.

Fasteners: Includes clamps, screws, ties, and pads for secure assembly.

Insulation Components: Includes clamp insulation, grounding plates, and insulating pads for enhanced safety

Raw Material Selection: Only premium silicon steel sourced from trusted suppliers.

Precision Cutting: Accurate cutting of steel sheets to specified dimensions using advanced machinery.

Lamination Stacking: Sheets are stacked following strict design patterns to reduce air gaps and optimize performance.

Insulation Treatment: Each core is coated with high-quality insulation paint for durability and energy efficiency.

Quality Inspection: Rigorous testing for dimensional accuracy, magnetic properties, and insulation quality.

Transformer cores operate under alternating current (AC) conditions, where energy loss, commonly known as iron loss, occurs. Iron loss is caused by two factors:

Hysteresis Loss: Results from the magnetization process in the core material. By using silicon steel with a narrow hysteresis loop, this loss is minimized, reducing heat generation.

Eddy Current Loss: Alternating magnetic flux induces circulating currents (eddy currents) in the core. These losses are reduced by using thin, insulated silicon steel sheets to limit current paths and increase resistance.

By optimizing core design and materials, PromiSIS minimizes energy losses, ensuring efficient transformer performance.

Explore our finished transformer cores, including precision-engineered designs that meet the diverse needs of the energy and power industry.

 

 

 

PromiSIS^®️ transformer cores are widely used in:

• Power transmission systems.
• Renewable energy projects.
• Industrial equipment.

PromiSIS^®️ Custom Core Service

We provide high-performance cores in various specifications and shapes according to customer application requirements:

• Support special size customization
• High-precision processing to ensure low loss and high efficiency
• Raw materials are made of high-quality silicon steel sheets to ensure reliable performance

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