Various types of transformers and their working


“Transformer” is one of the oldest electrical engineering inventions. A Power Transformers Manufacturers India is an electrical device that may transfer power from one circuit to another without making physical contact or modifying its characteristics such as frequency and phase.

It is a necessary component of all electrical network circuits. It is primarily composed of two circuits: principal circuits and one or more secondary circuits. Please see the link Everything You Need to Know About Transformers and How They Work for further information. Different types of transformers are discussed in this topic.

Transformer Principles of Operation. 

Faraday’s electromagnetic induction law governs the transformer’s operation. Power transformation is caused by the mutual induction phenomenon between two or more windings. According to Faraday’s laws, the rate of change of flux linkage concerning time is directly proportional to the EMF produced in a conductor or coil,” Faraday’s laws.

Transformers are divided into several categories

Various Power Transformers Manufacturers India types are utilized in the electrical power system for various reasons, such as power generation, distribution, transmission, and power consumption. Voltage levels, core media employed, winding configurations, use, installation location, and other factors classify transformers. Different sorts of transformers are discussed here, such as step up and step-down transformers, distribution transformers, potential transformers, power transformers, 1-, 3-, and autotransformers, and so on.

Transformer Types based on Voltage Levels. 

For all applications, these are the most often utilized transformer types. Transformers are categorized as step-up or step-down depending on the voltage ratios between the primary and secondary windings.

Transformer for Step-Up

The secondary voltage is stepped up in proportion to the primary voltage, as the name implies. This can be accomplished by increasing the number of secondary windings relative to the primary windings. A step-up Power Transformers Manufacturers India is a transformer that connects the generator to the grid in a power plant.

Transformer with a Step-Down

It is termed a step-down transformer because it is used to step down the voltage level from lower to higher on the secondary side, as seen below. The major site of the winding has more turns than the secondary side. The step-down transformer is often used in distribution networks to convert high grid energy to the low voltage used for residential appliances.

The Different Types of Transformers Based on the Core Medium. 

Transformers are categorized as Air core or Iron core depending on the medium used between the primary and secondary windings.

Transformer with an Air Core

The primary and secondary windings are both coiled on a non-magnetic strip, with the flux linkage between them being through the air. The mutual inductance is lower than that of an iron core, implying that the reluctance offered to the generated flux is higher in the air medium. In an air-core type transformer, however, hysteresis and eddy current losses are fully avoided.

Transformer with an Iron Core

The main and secondary windings are coiled on several iron plate bunches, resulting in a perfect connection path for the flux created. Because of the conductive and magnetic properties of iron, it has reduced reluctance to the linking flux. These are common Power Transformers Manufacturers India transformers with high efficiency when compared to air core transformers.

Transformers are classified by winding arrangement

Below is a discussion of transformers based on winding configuration.

Transformer with two windings

Winding-based transformer, such as two-winding transformers, have two independent windings for each phase, primary and secondary. The primary winding can be powered by an AC input, while the load can power the secondary winding.

These two windings are electrically isolated but magnetically linked. The induced EMF in the secondary winding is created by the fluctuating magnetic flux caused by the changing current in the main winding, also known as mutual induction. As a result, the o/p voltage is merely due to induction. This voltage is mostly determined by the winding’s ratio, increasing or decreasing the input voltage.

Autotransformer Unlike standard transformers, which have primary and secondary windings positioned in opposite directions, autotransformer windings have the primary and secondary windings physically and magnetically coupled in series. The voltage is modified according to the position of secondary tapping on the body of the coil windings on a single common coil that forms both primary and secondary windings.

The transformer of energy

The size of the power transformers is quite large. They are appropriate for high-voltage power transfer applications (more than 33KV). It can be found in power plants and transmission substations.

Autotransformers, polyphase, leaky, and resonant power transformers are examples of several types of power transformers.

Transformer for distribution

These transformer are used to distribute electricity generated by a power plant to distant regions. It is mostly used to distribute electrical energy at low voltages of less than 33 kV in industrial applications and 440 v-220 v in residential applications.

Transformer for Measurement

They are used to measure electrical quantities such as voltage, current, and power, among others. Potential transformers, current transformers, and so on are all types of transformers.

Transformative Potential

A potential transformer is also known as a voltage transformer. The transformer’s primary winding can be linked to the HV (high voltage) line, whose voltage needs to be determined. The transformer’s secondary winding can be connected to all measuring and metering instruments. The primary function of this transformer is to reduce the voltage to a safe level. As a safety feature, the primary winding in this transformer is grounded or earthed.

Transformer with a Toroidal Current

A primary winding is not included in this transformer. The line that holds the current flow throughout the circuit is passed through a hole or window within this transformer in its location. A split-core is used in some current transformers to open, close, and install without separating the network to which they are attached.


This article is about the various types of Power Transformer Manufacturers India. After reading this transformer essay in its entirety, we hope that you have gotten some useful insights and notions. Furthermore, we welcome you to offer your knowledge on this issue and other electrical and electronic project topics, as this will provide us with a valuable service.


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