Science Popularization | Main Structure and Functions of Various Components of Transformers

Jun 05, 2026

Leave a message

2026060516254715066

 

A complete transformer relies on the collaboration of multiple components to achieve electrical energy conversion. The core components are divided into four main bodies: iron core, winding coil, oil tank, and bushing, with accompanying accessories. The division of labor for each component is clear:

1, Iron core

The magnetic core of the transformer is composed of high permeability silicon steel sheets stacked together. Function: To construct a closed magnetic flux circuit, reduce magnetic losses and excitation power consumption, gather magnetic fields, ensure efficient electromagnetic conversion, and serve as a carrier for electrical and magnetic energy exchange.

2, Coil (winding)

Divided into high voltage winding and low voltage winding, it is made of insulated copper/aluminum wire winding. Function: To achieve voltage rise and fall, the primary coil is connected to the input voltage, and different voltages are generated in the secondary coil through electromagnetic induction; The outer insulation material isolates leakage and avoids inter turn short circuits.

3, Oil tank (exclusive for oil immersed transformers)

Steel sealed box, containing transformer insulation oil inside.

1. Insulation: Insulation oil isolates the coil, iron core, and box to prevent conductive breakdown;

2. Heat dissipation: The equipment generates heat during operation, which is carried away by the circulation of insulating oil and cooled by a radiator;

3. Protection: Isolate water vapor and dust, and protect internal components from corrosion.

4, Casing

Insulated ceramic/composite material components, installed on the fuel tank body, with coil leads passing through sleeves and leading out of the body. Function: Isolate live leads from metal oil tanks, achieve electrical insulation, and fix outgoing terminals to connect external power supply lines.

 

 

Send Inquiry