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Composition of transformer
Classification:
Transformer components include body (iron core, winding, insulation, lead), transformer oil, oil tank and cooling device, pressure regulating device, protection device (moisture absorber, air passage, gas relay, oil storage cabinet and temperature measuring device, etc.) and outlet bushing. Specific composition and function:
(1) Iron core. The iron core is the main part of the magnetic circuit in the transformer. It is usually stacked by hot-rolled or cold-rolled silicon steel sheets with high silicon content, thickness of 0.35mm, 0.3mm and 0.27mm respectively, and coated with insulating paint on the surface. The iron core is divided into two parts: iron core column and cross piece. The iron core column is sheathed with winding. The cross piece is used to close the magnetic circuit.
(2) Winding. The winding is the circuit part of the transformer, which is wound with double-wire insulated flat wire or enameled round wire. The basic principle of the transformer is the principle of electromagnetic induction. Now a single-phase double-winding transformer is used as an example to illustrate its basic working principle: when a voltage U1 is applied to the primary winding, a current I1 flows, and an alternating magnetic flux O1 is generated in the iron core. These magnetic fluxes are called the main magnetic flux. Under its action, the windings on both sides respectively induce electric potential and then drive the transformer control device.
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