The iron core of a transformer is made of laminated silicon steel with special insulated coating to limit eddy current loss.
Why are iron cores in transformers laminated.
Transformers are basically two coils of wire wrapped around a core of iron.
However when a magnetic flux flows in a transformers steel core two types of losses occur in the.
A magnetic core is a piece of magnetic material with a high magnetic permeability used to confine and guide magnetic fields in electrical electromechanical and magnetic devices such as electromagnets transformers electric motors generators inductors magnetic recording heads and magnetic assemblies it is made of ferromagnetic metal such as iron or ferrimagnetic compounds such as ferrites.
But a solid iron core has some own disadvantage due to to some losses.
Provide support to windings.
The iron core transformer has higher permeability thus it is applied in transformer in place of air core in modern transformer.
Answered by abhijeet mishra 1st aug 2018 06 37.
Why iron core is thin laminated in transformer.
Eddy current is induced in core and circulates normal to the width of the core causing heat.
Electrical steel also called lamination steel is specialty steel tailored to produce certain magnetic properties such as a small hysteresis area small energy dissipation per cycle or low core loss and high permeability.
Transmission of power and house wiring.
The eddy currents cause energy to be lost from the transformer as they heat up the core meaning that electrical energy is being wasted as unwanted heat energy.
The core of any transformer is laminated for the following reasons.
To control it s weight regulate the energy loss due to eddy currents increase the formation secondary voltage.
The reason we laminate the iron cores in transformers is because we want to limit what are called eddy currents.
This means that a steel laminated core can carry a magnetic flux 1500 times better than that of air.
Decrease the reluctance of the magnetic path.
Most transformer cores are constructed from low carbon steels which can have permeabilities in the order of 1500 compared with just 1 0 for air.