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Transformer cores are made up of insulated laminations to cut down on eddy currents induced in the core, which is an unwanted power-loss.

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During core bulding process why crgo lemination are used?

Transformer cores are chosen to limit eddy currents, which cause heating and losses in the core. Very thin laminations minimize this overhead cost of running a transformer by reducing losses associated with eddy currents.


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Presumably, you are asking "What is the function of transformer laminations?", rather than their "uses".A transformer's magnetic circuit, or core, is made from thin sheets of silicon steel, each insulated from each other, and termed laminations.The alternating current flowing through a transformer's primary winding not only induces a voltage into the secondary windings, but into the core itself, resulting in circulating currents, called eddy currents, which result in energy losses. The very low cross-sectional area of each lamination acts to offer a high resistance to the flow of these eddy currents, thus minimising these currents, and the associated eddy-current losses.


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Core lamination refers to the process of layering thin sheets of magnetic material, like steel or iron, in an alternating pattern to form the core of an electrical transformer or motor. This laminated construction reduces energy losses due to eddy currents and improves the overall efficiency of the device.


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