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What is the power transformer

The power transformer is an electromagnetic component. It is static electrical equipment that transforms alternating current and is widely used in almost all electronic products. It is used to change the power generated by the power station to high voltage and reduce the loss during transmission, so as to facilitate long-distance power transmission.

 

The function of the power transformer:

 

The functions of the power transformer can be divided into the following three main functions: voltage conversion, power transmission, and insulation isolation.

 

Principle of power transformer:

 

The principle of the transformer is the electromagnetic induction to transmit signals from one circuit to another circuit; the coil connected to the power supply, which receives AC power, called the primary winding; the coil connected to the load, which sends AC power, is called the secondary winding.

 

 

 

Structure of power transformer:

 

The structure of the transformer is composed of iron core and winding. The main magnetic circuit of the transformer is composed of an iron core, and the iron core is divided into two parts of the iron core column and the horizontal piece. The circuit part of the transformer is formed by winding the enameled original wire or double-wire insulated flat wire.

 

 

 

Classification of power transformers:

 

According to usage: power transformer; special transformer; instrument transformer; test transformer.

 

Divided by winding form: double winding transformer; three winding transformer; autotransformer.

 

According to the form of iron core: core transformer; bright transformer; amorphous alloy transformer.

 

Divided by the number of phases: single-phase power transformer; three-phase power transformer.

 

Divided by cooling method: dry-type power transformer; oil-immersed power transformer.

 

According to the size of the transmission power: 10KVA above is high power; 10KVA~0.5KVA is medium power; 0.5KVA~25VA is low power; 25VA below is micropower.

 

 

 

Purpose of power transformer:

 

The power transformer can be stepped up or stepped down. When implementing the long-distance transmission of power, the power transformer is used to increase the voltage to the point of use and then reduce the voltage to the required voltage amplitude. The iron core in the transformer can produce an alternating magnetic field.

 

 

 

As a cross-border B2B platform, ESGCC Global has many related products. Here are some examples:

 

 

500kV Power Transformer,120MVA-720MVA, Three-Phase, Double Windings Off-circuit Tap-changing Power Transformer

 

35kV Power Transformer/KEMA certificate/LEEEC

 

If you want to know more information, you can visit https://g.esgcc.com.cn/products/AC-Transformer.html

 

ESGCC Global, built by State Grid Electronic Commerce Co., Ltd., is the cross-border B2B digital trading platform for power industry. The platform has gathered nearly 80,000 electrical equipment manufacturers to provide over 170,000 cost-effective electrical equipment products with international quality selection, helping global users of power industry to achieve smart online procurement with one-stop trading service.

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