Electrician basics-the most basic knowledge of transformers

In the process of power transmission, transformation and distribution, the transformer is an important electrical equipment. Transformers can be seen everywhere in industrial enterprises, shopping malls, office buildings, and residential communities. The role of transformers in the power industry is extremely important. As a power practitioner, you must understand the knowledge about transformers. Here is me for everyone Summarized two common sense about transformers, after reading you will have a new understanding of transformers.
Principle of transformer

Transformer is a device that uses the principle of electromagnetic induction to change AC voltage and current. The main components are the primary coil, the secondary coil and the iron core (magnetic core). The figure below shows several transformers of different shapes

What are the functions of the transformer?

Variable voltage: increase or decrease the voltage, go through the process of step-up, transmission, and step-down before the generator finds out, and transform the voltage into a voltage level for residential or industrial use.

Variable current: change the current while changing the voltage

Isolation: Isolate the user system and the power supply system to reduce the scope of the accident.

What types of power transformers are there?

Oil-immersed transformer: a transformer that uses transformer oil as the insulating medium and cooling medium, and the core and coil are all immersed in the insulating oil.

Dry-type transformer: The iron core and coil are cast with epoxy resin material to provide insulation.

Amorphous alloy transformer: The new transformer developed this year uses amorphous alloy material as the insulating medium and has good temperature resistance.