A wound core is a precision-engineered magnetic core used in distribution and power transformers to enhance energy efficiency, reduce core losses, and improve overall transformer performance. It is manufactured by winding high-grade, grain-oriented electrical steel into a continuous loop, resulting in a seamless magnetic path with minimal joints and air gaps. This design significantly lowers hysteresis and eddy current losses compared to conventional laminated cores.

Wound cores are especially suitable for low-noise, high-efficiency transformers, such as amorphous and toroidal core transformers. Their circular geometry ensures uniform flux distribution, reduced magnetostriction, and superior magnetic properties, making them ideal for use in critical applications where reliability and performance are paramount.

These cores are available in various shapes including oval, round, and rectangular formats, and can be customized based on voltage class, size, and material grade. Advanced manufacturing processes ensure tight dimensional tolerances, smooth surface finishes, and excellent stacking factor.

 Features:

• Continuous magnetic path with minimal energy loss

• Lower core loss compared to laminated EI or UI cores

• Compact design with high magnetic flux efficiency

• Low audible noise and vibration

• Suitable for amorphous and high-frequency transformers

• Customizable sizes and geometries available

• Compatible with both dry-type and oil-immersed transformers

• Manufactured using CRGO or amorphous alloy steel

Applications:

• Distribution transformers

• Current transformers (CTs)

• Instrument transformers

• Toroidal power transformers

• Renewable energy transformers (solar, wind)

• Low-loss, low-noise applications in commercial and industrial grids

Technical Specifications:

• Material: CRGO silicon steel or amorphous alloy

• Core loss: As per IEC/IS standards (based on grade)

• Shapes: Round, oval, rectangular

• Insulation: Epoxy-coated, polyester film, or paper insulated

• Frequency: 50/60 Hz standard, others on request

• Custom tolerance: ±0.1 mm or as per customer specs

• Standards: IS 3024, IEC 60404, ISO 9001