what is transformer and its types

To gain knowledge about transformers, you need to know what is a transformer. You need to have a good idea about the type of transformer as well as know the main parts of the transformer and the working principle of the transformer.

what is a transformer?

A transformer is an electrical static device that allows the transfer of power from one circuit to another by increasing or decreasing the voltage as required on two magnetically connected coils without any change in total electrical power and frequency.

In other words,
A device that transfers power from one circuit to another without changing the voltage and current, without changing the power and frequency, is called a transformer.

In other words,
A transformer is an electrostatic device that allows the transfer of electrical energy through electromagnetic induction without any electrical connection between the coils without changing the frequency and power.

Power and frequency never change in the transformer

what-is-a-transformer

what does a transformer do?

We use different types of voltages for the distribution and distribution of electricity.

As we use 230 volts in-home and 440 volts in industry and transmission, we use 11 kb 33 kb, and 230 kb.

For this distribution and transport, we have to use different types of voltages at different times.

The instrument or device used for voltage up and down voltage is a transformer.

Type of transformer

There are two types of transformers according to the procedure

1.Step-up transformer

2. step down transformer

1. what is a step-up transformer?

The transformer that is used to increase the voltage is called a step-up transformer.

step-up transformer The voltage is higher from the primary side to the secondary side and the current is higher from the secondary side to the primary side.

But input power and output power are equal and the frequency does not change.

2. what is a step-down transformer?

The transformer with which the voltage is reduced is called the step-down transformer.

The voltage from the primary side to the secondary side of this transformer is low and the current from the secondary side to the primary side is low.

But input power and output power are equal and the frequency does not change.

There are three types of transformers according to the structure of the core

1.Core type

2.Shell type

3.Spiral core type


1. core type transformer

The core of a transformer is made up of several rectangular L-shaped laminated steel sheets called a core type transformer.

2. shell type transformer

A transformer whose core structure is rectangular and is made of E and I-shaped laminated steel sheets is called a shell-type transformer.

3.spiral core

A spiral core transformer is a spiral core transformer in which the core of a transformer is wrapped in a circular space with the required space in the middle.

six types of the transformer according to use

1. Power Transformer

2. Distribution Transformer

3. Auto-transformer

4. Instrument Transformer

5. Current Transformer

6. Potential transformer


1. what is a power transformer?

A transformer that supplies power from a power generation center to a substation is called a power transformer.

This transformer is used in power lines above 33 KV It has no practical load.

2. what is a distribution transformer?

The transformer that is used from the substation to the power supply of the customer is called a distribution transformer.

This transformer is used in power lines less than 11 kV It has no practical load.

3. what is autotransformer?

The transformer whose primary winding and secondary winding are common and whose primary winding is made of high voltage and whose secondary winding is low voltage is called autotransformer.

4. instrument transformer

The transformer that is used to measure Voltage, Current, Power, Energy, Power Factor, Frequency is called an instrument transformer.

instrument transformers are also used with Protective relays for the protection of the power systems.


5. what is the current transformer?


The short form of current transformer is CT A transformer that measures a large amount of current is called a current transformer.


It is usually used to measure current above 100 amperes. This is a measuring instrument.


6. what is potential transformers?


The short form of potential transformers is PT. The transformer that is used to measure high voltage is called a potential transformer.


It is commonly used in power generation centers, substations, etc. It is usually used to measure voltages above the minimum 11KV voltage.

four methods based on the installation method

1. Indoor type

2. Outdoor type

3.Pole mounted

4. Underground Transformer


1. Indoor type transformer

An indoor type transformer is a transformer that is installed in a confined space or in a separate room for installation.


2. outdoor type transformer

A transformer that is placed in an open space is called an outdoor type transformer.


3. pole-mounted transformer

A transformer mounted on a pole is called a pole-mounted transformer.

It is commonly used in distribution lines.


4. underground transformer

A transformer that is placed underground is called an underground transformer.

It is usually placed for extreme security.


There are two types of transformers according to the frequency

1. audio frequency

2. Radio-frequency Transformer


1. audio frequency


The transformer that is used to move audio up and down from one place to another is called an audio frequency transformer.


audio frequency Transformer is usually small in size The audio frequency Transformer frequency is 20 Hz - 20 kHz.


2. what is Radiofrequency


The signal frequency by which two or more devices are connected via signal frequency without a physical connection is called radiofrequency.


The transformer that is used to increase or decrease the radio frequency is called the radio frequency transformer.


There are two types of transformers based on the number of phases

1. Single transformer

2. Poly Phase transformer


1. Single-phase transformer


A single-phase transformer that provides a single-phase up or down in secondary through single-phase supply is called a single-phase transformer.


It is usually used in the customer's distribution line.


2. what is a three-phase transformer?


A transformer that provides three-phase power through the secondary winding of a transformer is called a three-phase transformer. It is made as per the requirement with the help of winding.

It is commonly used on transmission lines.

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FAQ In transformer and its types


Q1. Why is a transformer used?

Ans: Transformers are used to increase or decrease the voltage as required. It is very easy to change the voltage with the help of a transformer.


Q2. Why current transformer is used?

Ans: Current transformers are used for high-quality current measurement. 10 A current is usually measured with an ammeter.


Q3. Why is a potential transformer used?

Ans: The transformer that is used to measure high voltage is, therefore, a potential transformer. It is usually used in high voltage lines.


Q4. What type of transformer is used in the distribution line?

Ans: Distribution transformers are commonly used in distribution. lines Distribution transformers can be a single fridge and three-phase transformers. It is determined as needed.


Q5. How is the current transformer connected?

Ans: The current is connected to the transformer series. In other words, the busbar or conductor is placed through the current transformer.

If you have any doudts.Please let me know

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