Uses, Benefits & Types of Power Transformers

guide to power transformer

The objective of an electrical power transformer is to modify voltage from a high voltage (transmission line) to a low voltage (buyer). The transformer is an electrical device that moves electric energy by electromagnetic acceptance. However, there are different types of power transformers that can do this process.

Transformers are broadly utilized as single and three phase power transformers in power plants, substations, circulation systems, and step-down controllers in modern hardware.

Use of Power Transformer

Generation of electrical power in low voltage levels is affordable with power transformers Canada. Hypothetically, this low voltage level power can be communicated to the receiving end. This low voltage power if sent brings about a more prominent line current which causes more line losses.

If the voltage level of power increases, the current of the power diminishes. It causes a decrease in ohmic or I2R losses in the system. It also leads to a decrease in the cross-sectional region of the conductor. For example decrease in capital expenditures of the system. It additionally improves the voltage regulation of the system. As a result of these, a phase power transformer can help to phase the voltage from a lower level.

This is done by an electrical power transformer at the receiving side of the system. As this high voltage power may not disseminate to the customers straightforwardly, it should be brought down to the ideal level at the receiving end with the assistance of a step down transformer. Therefore, power transmission is the most important use of power transformer in any system.

Benefits of Power Transformer

Inexpensive: Compared with single-phase transformers, 3-phase power transformers are less expensive. It has a lower cost than three units of a single phase transformer.

Lightweight: Three-phase transformers are light in weight and more modest in size than single-phase transformers. That implies they occupy less room.

Assembling: Very simple to assemble. We can get a solitary phase source from three-phase transformers, while the inverse isn’t substantial.

Types of Power Transformers

Transformers are quick to experience lightning and other high voltage floods. The transformer insulation needs to endure extremely high voltages many times more than the power recurrence working voltages. Here are the different types of power transformers you should know

Step up and Step down Transformer

The step-up and step-down transformers are two sorts of electrical transformers. They diminish or increase the voltage through an electrical circuit. The step up transformer is a device that will increase the voltage just to the right amount. The step down transformer will bring down the voltage to the correct level.

Distribution Transformer

A distribution transformer is a transformer that gives the last voltage change in the electric power delivery framework. It steps down the voltage in the dispersion lines to the level that the client needs.

The innovation of a down-to-earth, distribution transformer makes AC power dispersion possible. AC power has recently been utilized exclusively for industrial applications.

Three Phase Transformer and Single Phase Transformer

A three phase transformer is a three phase power framework. It is more affordable than single phase transformers. Be that as it may, when size matters, it is desirable to utilize a bank of three single phase transformers versus a three phase transformer. It is simpler to move than one single three phase transformer unit.

Two Winding Transformer and Auto transformer

A two winding transformer is useful where the proportion between the high voltage and low voltage side is more noteworthy than 2.

It is more affordable than an autotransformer in circumstances where the proportion between the high voltage and low voltage sides is under 2. 

Current Transformer

An ongoing transformer (CT) is a kind of instrument transformer that creates an exchanging current in its secondary loop relative to the current in its primary winding. Current transformers, alongside voltage or potential transformers, are instrument transformers.

Core type Transformer

There are two principal types of power transformer windings – core-type, and shell-type. There are additionally berry type transformers.

A core type transformer has two vertical legs or limbs with two level segments known as yoke. The center is rectangular in shape with a typical circuit. Round and hollow loops (HV and LV) are put on both the limbs.

Shell Type Transformer

A shell type transformer has a focal limb and two external limbs. Both HV and LV loops are put on the focal limb. The twofold circuit is available.


The power transformer’s essential capability is to change rotating flow power into direct flow power. Furthermore, it is also known as an AC-DC converter or a DC-AC converter. It is considering the changes over alternative current into the direct current as well as the other way around. The above types of power transformers can follow the process and provide proper power transmission.