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The iron core is the main magnetic circuit part of the transformers. It is usually made of hot-rolled or cold rolled silicon steel sheets with a high silicon content and coated with insulating paint on the surface. The iron cores and the coils wound around it form a complete electromagnetic induction system. The amount of power transmitted by the power transformers depends on the material and cross-sectional area of the core.
Cold-rolled non-oriented (CRNO) transformer cores are a crucial component in the construction of electrical transformer. These cores are made from a specific type of oriented electrical steel known as non oriented silicon steel or CRNO steel.
| Product Name | Silicon Steel coil |
| Standard | AiSi, GB, JIS |
| Type | Non-Oriented Silicon Steel |
| Technique | Cold Rolled |
| Thickness | 0.27mm - 0.65mm or as required |
| Width | 20-1500mm |
| Surface Treatment | Coated |
| Coil weight | 3-5tons |
| Color | Original color |
| Delivery Time | 15 days |
| Application | Transformer Core/Power Transformers/Electrical Products, etc. |
| Package | Standard Seaworth Packing |
| Payment Term | TT or LC |
| MOQ | 5 TONS |
Efficiency Considerations:
Low Core Losses: non oriented electrical steel is selected for transformer cores because of its low core losses, which contribute to the overall efficiency of the transformer. Low core losses mean less energy is dissipated as heat in the core.
Lamination and Insulation:
Laminated Construction: The core is often constructed with laminations (thin sheets) of CRNO steel. Laminations are stacked together, separated by insulation, to reduce eddy current losses.
Customization:
Various Thicknesses: CRNO steel is available in various thicknesses to accommodate different transformer designs and specifications.
Coatings:
Surface Coatings: In some cases, the CRNO steel may have coatings or surface treatments to improve its performance or protect it from environmental factors.
CRNO transformer cores are essential for the functioning of electrical transformers. They provide a low-loss magnetic path for the magnetic flux generated in the transformer, contributing to the overall efficiency and performance of the electrical system. The choice of CRNO steel is based on its magnetic properties, particularly its suitability for applications where the magnetic field is constantly changing, as is the case in transformers.
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