The body of the transformer is mainly composed of two parts: the iron core and two parts?

The main components of a transformer are a primary coil, a secondary coil and an iron core (magnetic core). The coil has two or more windings, of which the winding connected to the power supply is called the primary coil, and the rest of the windings are called secondary coils. It can transform AC voltage, current, and impedance.

The function of the core is to strengthen the magnetic coupling between the two coils. In order to reduce eddy currents and hysteresis losses in the iron, the core is made of painted silicon steel sheets.

laminated; There is no electrical connection between the two coils, and the coils are wound by insulated copper wire (or aluminum wire). Iron core: It is the magnetic path of electromagnetic induction of transformer, which is a closed magnetic circuit composed of silicon steel sheets with good magnetic permeability.

Winding: It is the circuit part of the transformer, which is a multi-layer coil wound by insulated copper wire or aluminum wire on the iron core. Fuel tank:

It is the housing of the transformer. Contains core, coil and transformer oil.

At the same time, it plays a role in heat dissipation. Oil pillow: When the volume of transformer oil expands or shrinks with the change of oil temperature, the oil pillow plays the role of oil storage and oil replenishment to ensure that the oil tank is full of oil, and the oil pillow can also reduce the contact surface between oil and air to prevent the oil from being oxidized and damp.

Respirator: The oil in the oil pillow is the same as the air through the respirator, and the respirator is filled with desiccant.

In order to absorb moisture and impurities in the air, it is the oil that retains good electrical properties. Radiator: When there is a temperature difference between the oil temperature of the upper layer of the transformer and the oil temperature of the lower layer, the oil circulation is formed through the radiator, so that the oil flows back to the oil tank after cooling through the radiator, which plays a role in reducing the oil temperature of the transformer.

Explosion-proof pipe: When there is a fault inside the transformer, the oil temperature rises, and the oil decomposes violently to produce a large amount of gas. The internal pressure of the fuel tank increases sharply, which breaks the explosion-proof pipe glass and sprays oil and gas from the nozzle to prevent the transformer oil tank from being deformed.

High and low voltage insulating sleeve: It is an insulating device that leads the lead of the high and low voltage windings of the transformer to the outside of the fuel tank.

As the title: It is mainly composed of two parts: the core and the coil.

According to the structural form of the transformer core, it is divided into two categories: (+) transformer and () transformer.

According to the structure of the transformer core, it can be divided into two categories: single-phase transformer and three-phase transformer. 1.

Single-phase transformer: The core structure of single-phase transformer can be divided into two types, namely "EI" type and "C" type. - EI cores:

It consists of two "E" shaped iron chips, separated by an insulating material in the middle, and resembles the word "". This kind of transformer in the form of iron core structure is small in size, light in weight and low in loss, and is widely used in household electrical appliances, electronic equipment and other fields. - C" Core:

It consists of a "C" shaped iron chip and is shaped like the word "(). This type of transformer in the form of iron core structure is suitable for high-power, high-voltage, high-current occasions, such as substations, power systems, etc. 2.

Three-phase transformer: The core structure of three-phase transformer usually adopts a "triangle" or "Y" structure. - Triangle "Defeated Hunger Core:

It is composed of three "E" shaped iron chips, which are shaped like the character "". This type of transformer with iron core structure is suitable for three-phase power system and is widely used in industry, agriculture, transportation and other fields. - Y" Core:

It consists of three "C" shaped iron chips and is shaped like a "Y". This type of transformer in the form of iron core structure is suitable for large-scale power systems, such as substations, power plants, etc. In short, the structure of the transformer core is different, and the applicable occasions and uses are also different, so it needs to be selected according to the actual situation.

I hope my answer can help you.

1. The core and winding are the most basic components of the transformer.

2. The transformer is composed of two windings set on a closed core, in addition to fuel tanks, oil pillows, respirators, radiators, explosion-proof devices, Juezhou Liyuan bushings and so on.

3. The functions of each component of the transformer are as follows: core: it is the magnetic path of the transformer electromagnetic induction, which is a closed magnetic circuit composed of silicon steel sheets with good magnetic permeability.

Winding: It is the circuit book of the transformer, which is a multi-layer coil wound by insulated copper wire or aluminum wire on the iron core. Fuel tank:

It is the housing of the transformer. Built-in core, coil and transformer oil, which also serve as heat dissipation. Oil pillow:

When the volume of transformer oil expands or shrinks with the change of oil temperature, the oil pillow plays the role of oil storage and oil replenishment to ensure that the oil tank is full of oil, and the oil pillow can also reduce the contact surface between oil and air to prevent the oil from being over-oxidized and damp. Respirator: The oil in the oil pillow is the same as the air through the respirator, and the respirator is filled with desiccant, in order to absorb moisture and impurities in the air, it is the oil that maintains good electrical properties.

Hello dear, transformers are made according to the principle of electromagnetic induction. There are two windings, a primary winding, and a secondary winding, wound around the closed core column. When the original winding is falsely connected to the AC mains voltage.

The original Rao group flow has an alternating current, and the construction of Zheng Huli magnetic potential, under the action of the magnetic potential, the iron core will produce an alternating main magnetic plexus simple pass, and the main magnetic flux passes through the iron core at the same time, {cross-chain] one. The secondary winding is closed due to electromagnetic induction in the primary and secondary windings respectively to produce induced electromotive force, as for why it can be pressurized, and will be pressed. Then it needs to be explained by Lenz and Sidd's laws.

The magnetic flux generated by the induced current always hinders the change of the circular magnetic flux

Answer: The main components of the transformer are: iron core, winding, oil tank, oil pillow, respirator, explosion-proof tube, radiator, insulating sleeve, simple stove sensitive connection and branch barrier, gas relay or electrical appliances, thermometer, oil purification, etc.

A power transformer is a static electrical device, which is a device used to change a certain value of alternating current (current) into another or several voltages (currents) with different values of the same frequency.

The primary and secondary coils of ordinary transformers are concentrically set on an iron core column, with low-voltage windings inside and high-voltage winding tung pins outside. (The original and secondary side coils of the transformer of the electric welding machine are not installed on the two iron core columns).

Transformers are divided into two categories according to the core:

1) Core transformer: power transformer used for high voltage.

2) Shell transformer: special transformer for high current, such as electric furnace transformer, electric welding transformer; or power transformers for electronic devices and televisions, radios, etc.

Types and characteristics of commonly used transformers.

1. According to the number of phases:

1) Single-phase transformer: used for single-phase load and three-phase transformer set.

2) Three-phase transformer: used for the rise and fall voltage of the three-phase system.

2. According to the cooling method:

1) Dry-type transformer: relying on air convection for cooling, generally used for local lighting, electronic circuits and other small-capacity transformers.

2) Oil-immersed transformer: relying on oil as the cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling, forced oil circulation, etc.

3. According to the use:

1) Power transformer: used for the rise and fall voltage of the transmission and distribution system.

2) Instrument transformers: such as voltage transformers, current transformers, measuring instruments and relay protection devices.

3) Test transformer: It can generate high voltage and carry out high voltage test on electrical equipment.

4) Special transformers: such as electric furnace transformers, rectifier transformers, adjustment transformers, etc.

4. According to the form of winding:

1) Double-winding transformer: used to connect two voltage levels in the power system.

2) Three-winding transformer: generally used in the regional substation of the power system, connecting three voltage levels.

3) Autotransformer: used to connect power systems with different voltages. It can also be used as an ordinary step-up or step-down transformer.

5. According to the form of iron core:

1) Core transformer: power transformer used for high voltage.

2) Shell transformer: special transformer for high current, such as electric furnace transformer, electric welding transformer; or power transformers for electronic devices and televisions, radios, etc.

High frequency, medium frequency, low frequency, power frequency. It's just frequency allocation.

The iron core is composed of silicon steel sheets, in order to reduce the eddy current, there is a certain insulation resistance between the pieces (generally only a few ohms to tens of ohms), because the capacitance between the pieces is very large, it can be regarded as a path in the alternating electric field, so the iron core only needs a little grounding to clamp the potential of the whole stack of iron core stacks to the ground potential.

The iron core is the main part of the magnetic circuit in a transformer. It is usually made of hot-rolled or cold-rolled silicon steel sheets with a high silicon content and an insulating varnish on the surface. The iron core and the coil that winds around it form a complete electromagnetic induction system.

The amount of power transmitted by the power transformer depends on the material and cross-sectional area of the core.

Point (1) Set up a separate iron yoke clamp grounding lead-out line. Because if the core hits the upper clamp and causes a multi-point grounding fault, the grounding current only flows inside the core clamp, and there is no current flowing in the core grounding lead-out line, which will cause the staff to mistakenly believe that the core is not faulty; After setting, no matter where the core hits the clamp, a loop is formed through two ground outer leads, so that the ground current can be accurately detected externally.

2) The core grounding piece is placed in the middle of the cross-section of the iron yoke. In this way, no matter where the iron yoke is located and where the fault grounding point is, the maximum induced voltage of the circuit is only 1 4 of the turn voltage, and the maximum grounding current at this time is only about a few amperes, which is much smaller than when the core grounding piece is placed in other positions.

3) If it is indeed necessary to place the core grounding piece in other positions due to inconvenient on-site installation and other problems, the insulating bolts and grounding pieces of the iron yoke belt should also be placed diagonally, so as to prevent large currents.

The core of the transformer is stacked layer by layer with silicon steel sheets, generally in the shape of "mouth", "day", etc., and the steel sheets stacked together are insulated from each other.

1. It's too general, and there are all kinds of shapes of ferrite cores.

2. The transformer divides the frequency transformer and the high-frequency transformer; Power frequency transformers are divided into instrumentation transformers and power transformers; Power transformers are divided into dry-type transformers and oil-immersed transformers; High-frequency transformers are what we call electronic transformers, which are used for power supply and filtering. The materials are also varied. I can't finish it in three or five hours.

3. There are many types of magnetic cores for high-frequency transformers according to their design and function.

Common ones include UU, EI, EE, ER, EFD, EPC, UT, RM, PQ, etc.