What Is The Purpose Of The Silicon Steel in The Transformer?

Silicon steel:
Silicon steel is a kind of very low carbon silicon iron alloy material with silicon content of 0.5%-4.5%, which has the characteristics of high permeability, low coercivity and high resistance coefficient, and is widely used in the manufacture of generators, motors, transformers, mutual inductors and other equipment.
According to the different production processes, silicon steel is divided into two kinds of hot-rolled silicon steel and cold-rolled silicon steel. Cold-rolled sheet has uniform thickness, good surface quality, higher magnetic properties and better performance than hot-rolled sheet, therefore, hot-rolled sheet faces the trend of being gradually eliminated by cold-rolled sheet.
Cold-rolled silicon steel is divided into oriented silicon steel and non-oriented silicon steel according to the internal grain orientation. The grain orientation of silicon steel is basically in one direction, with high silicon content, mainly used in transformer manufacturing; non-oriented silicon steel grain distribution is disordered, with low silicon content, mainly used in motor manufacturing. After the production of silicon steel, the performance will be identified by magnetic test, the magnetic susceptibility of less than 1.88T is the general oriented silicon steel (CGO), the magnetic susceptibility of more than 1.88T is the high magnetic susceptibility oriented silicon steel (HiB).
The performance of oriented silicon steel can be defined by iron loss, magnetic susceptibility and other indicators, usually using the grade to distinguish. The lower the value of loss and the higher the magnetic susceptibility, the better the performance, which can make the transformer power loss reduced. In addition, for the same capacity, the volume and weight of transformer cores made of oriented silicon steel are reduced, and can save silicon steel sheets, electromagnetic wires and insulation materials.

Transformer:
Transformer is an electrical equipment that uses the principle of electromagnetic induction to transform AC voltage and current and transmit AC energy, the main components are primary coil, secondary coil and iron core (magnetic core), its main functions are: voltage transformation, current transformation, impedance transformation, isolation, voltage regulation (magnetic saturation transformer), etc. Transformers can be divided into: power transformers, test transformers, instrument transformers and special purpose transformers according to their use.
Power transformer is one of the main equipment in power plants and substations, through which the voltage is increased and transmitted to the power-using area, and then reduced to various voltages to the end user. Power transformer is the key and key equipment in the transmission and distribution lines, is an important part of the power industry, in the generation, transmission, distribution, electrical energy conversion and other aspects play an important role, power transformers are mainly run in the main power grid and distribution terminals.