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Wound Cores For Transformers & Chokes:
BGOC specialises in the production of all types of Wound Cores & Rectangular Cores in Cold Rolled Grain Oriented(CRGO) Silicon Steels of grades M3, M4, M5 and M6 or as per customers specification.
Cold Rolled Grain Oriented (CRGO) electrical steel sheets has 3% silicon content, which develops a high degree of grain orientation, which thereby gives numerous advantages when compared with lamination stacked cores. Some of the advantages include:
- Up to 30% more flux for the magnetising force.
- Increased rating for a given size of transformer.
- Better regulation.
- Reduction in size and weight.
- Reduced assembly time, storage and handling costs.
Normally, Cores are produced in four material thicknesses: 0.23 mm (M3) 0.27 mm (M4) 0.30 mm (M5, 0.35 mm (M6) and better grades are used for higher frequencies and pulse applications to meet with the customers requirements.
Processing of Cores is carefully controlled at all stages of production by the Quality Management and every core is individually tested to the appropriate specification prior to dispatch. The Quality Management monitors the packing methods of wound cores & rectangular cores in order to ensure that the product arrives at the user in good condition.
To achieve performance guarantees, Cores must comply with the following dimensional parameters:
Mechanical parameters:
- Inside diameter must be greater than 30mm.
- Ratio of Inside Diameter / strip width must be greater than 1.
Performance guarantees:
The Cores are normally tested and guaranteed at 2 points on the magnetisation curve. The other points of guarantee can be agreed to customer’s preferred test conditions and can be provided.
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