Transformer components include the body (iron core, winding, insulation, lead), transformer oil, fuel tank and cooling device, pressure regulator, protection device (moisture absorber, safety airway, gas relay, oil storage tank and temperature measurement device, etc.) and outlet bushing.

Specific composition and function:

(1) Iron core. The core is the main part of the magnetic circuit in the transformer. Usually contains high silicon content, thickness of 0.35mm, 0.3mm, 0.27mm, the surface is coated with insulating paint hot rolled or cold rolled silicon steel sheet stacked. The core is divided into two parts: the core column and the transverse plate, and the core column is covered with a winding; The transverse plate is used to close the magnetic circuit.

(2) Winding. The winding is the circuit part of the transformer, which is wound with double silk-covered insulated flat wire or enamelled round wire. The basic principle of the transformer is the principle of electromagnetic induction, now take the single-phase double-winding transformer as an example to explain its basic working principle: when the voltage U1 is added to the primary side winding, the flow current I1, the alternating magnetic flux O1 is generated in the iron core, these magnetic flux is called the main magnetic flux, under its action, the two sides of the winding respectively induction potential, and finally drive the transformer control device.