Transformer Symbol | Transformer Symbol Electrical | Potential Transformer Symbol | Step Down Transformer Symbol | Step Up Transformer Symbol

Transformer symbols are an important part of electrical engineering, as they represent the different components and connections of a transformer. A transformer is an electrical device that transfers energy from one circuit to another through electromagnetic induction. It is used to increase or decrease the voltage of an alternating current (AC) power supply. The symbols used to represent transformers in electrical diagrams are standardized and allow engineers to easily understand the circuit's design and function. In this article, we will learn about various transformer symbols and their meanings to help you better understand electrical circuit diagrams."

Single Phase Two Winding Transformer:

This transformer has two windings and is used in single-phase applications. The typical ratings range from a few VA to several KVA.

Two Winding Transformer:

This is a basic transformer that has two windings, primary and secondary. The primary winding is connected to the source and the secondary winding is connected to the load. The typical ratings of this transformer range from a few VA to several MVA. This type of transformer is used in power distribution and transmission.

Air Core Transformer:

This transformer has an air core instead of a magnetic core. The typical ratings range from a few mW to several KW. It is used in radio frequency and audio applications

Saturable Reactor Transformer:

This transformer has a magnetic core that can be saturated. The typical ratings range from a few VA to several MVA. It is used in power supplies, motor control circuits, and lighting systems.

Iron Core Transformer:

This transformer has an iron core that is used to increase the magnetic coupling between the windings. The typical ratings range from a few VA to several MVA. It is used in power distribution and transmission.

Ferrite Core Transformer:

This transformer has a ferrite core instead of an iron core. The typical ratings range from a few mW to several KW. It is used in high-frequency applications.

Variable Transformer:

This transformer has a variable turns ratio and is used for voltage regulation. The typical ratings range from a few VA to several KVA.

Single Phase Separate Winding Transformer: 

This transformer has separate primary and secondary windings. The typical ratings range from a few VA to several KVA.

Shielded Transformer:

This transformer has a shield between the windings to reduce electromagnetic interference. The typical ratings range from a few VA to several MVA.

Current Regulation Transformer:

This transformer is used for current regulation. The typical ratings range from a few VA to several KVA.

Voltage Regulation Transformer:

This transformer is used for voltage regulation. The typical ratings range from a few VA to several KVA.

Moving Magnet Transformer:

 This transformer has a moving magnet that induces a voltage in the windings. The typical ratings range from a few mW to several KW.

Adjustable Core Transformer:

This transformer has an adjustable core that can be moved to change the magnetic coupling between the windings. The typical ratings range from a few VA to several KVA.

Current Transformer:

This transformer is used to measure current. The typical ratings range from a few mA to several KA.

Dual Core Current Transformer:

This transformer has two cores and is used for current measurement. The typical ratings range from a few mA to several KA.

Dual Core Current Transformer with Two Secondary Lines:

This transformer has two cores and two secondary windings. The typical ratings range from a few mA to several KA.

Current Transformer with 3 Conductors:

This transformer has three conductors and is used for current measurement. The typical ratings range from a few mA to several KA.

Single Core CT with two Secondary & 3 Primary Conductors:

This transformer has a single core and two secondary windings and three primary conductors. The typical ratings range from a few mA to several KA.

Single Core Current Transformer with two Secondary:

This transformer has a single core and two secondary windings. The typical ratings range from a few mA to several KA.

Choke:

This transformer is used as a filter to remove unwanted signals. The typical ratings range from a few mW to several KW.

Step Down Transformer:

This transformer reduces the voltage from the primary to the secondary winding. The typical ratings range from a few VA to several

Step Up Transformer:

 This transformer increases the voltage from the primary to the secondary winding. The typical ratings range from a few VA to several MVA. It is used in power transmission and distribution.

Center Tapped Transformer:

This transformer has a center tap on the secondary winding, which can be used to provide a split-phase output. The typical ratings range from a few VA to several KVA.

Transformer with Winding Polarity:

This transformer has the winding polarity marked, which ensures that the primary and secondary windings are connected correctly. The typical ratings range from a few VA to several MVA.

Three Winding Transformer:

This transformer has three windings, and is used for power transmission and distribution. The typical ratings range from a few KVA to several MVA.

Autotransformer:

This transformer has a single winding that is used as both the primary and secondary winding. The typical ratings range from a few VA to several MVA.

Single Phase Autotransformer:

 

This transformer is used in single-phase applications and has a single winding that serves as both the primary and secondary winding. The typical ratings range from a few VA to several KVA.

Iron Core Autotransformer:

This transformer has an iron core and a single winding that serves as both the primary and secondary winding. The typical ratings range from a few VA to several KVA.

Three Phase Voltage Transformer:

This transformer is used for voltage measurement in three-phase systems. The typical ratings range from a few VA to several KVA.

Three Phase Star-Star Connected Transformer:

This transformer is used in three-phase power distribution systems, where the primary and secondary windings are connected in a star configuration. The typical ratings range from a few KVA to several MVA.

3 Phase Transformer – Induction Regulator:

This transformer is used for voltage regulation in three-phase systems. The typical ratings range from a few KVA to several MVA.

3 Single Phase Star/Star Connected Transformer:

This transformer is used in three-phase power distribution systems, where each phase is connected to a single-phase star configuration transformer. The typical ratings range from a few KVA to several MVA.

Three Phase Star Connected Autotransformer:

This transformer is used in three-phase power distribution systems, where a single winding serves as both the primary and secondary winding. The typical ratings range from a few KVA to several MVA.

3 Phase Star-Delta Connected Transformer:

This transformer is used in three-phase power distribution systems, where the primary winding is connected in a star configuration and the secondary winding is connected in a delta configuration. The typical ratings range from a few KVA to several MVA.

3 Phase Delta-Star Connected Transformer:

This transformer is used in three-phase power distribution systems, where the primary winding is connected in a delta configuration and the secondary winding is connected in a star configuration. The typical ratings range from a few KVA to several MVA.

3 Phase Star/Star Connected Transformer with Connection Points:

This transformer is used in three-phase power distribution systems, where each phase is connected to a single-phase star configuration transformer with connection points for other devices. The typical ratings range from a few KVA to several MVA.

3 Phase Star-Zig Zag Connected Transformer:

This transformer is used in three-phase power distribution systems, where the primary winding is connected in a star configuration and the secondary winding is connected in a zigzag configuration. The typical ratings range from a few KVA to several MVA.

FAQs 

Q: What is a symbol of transformer?

A: The symbol of a transformer is a simple two-coil representation consisting of two parallel lines, with an "H" shape between them that represents the iron core. The coils are represented by a series of curved lines that resemble the letter "S".

Q: What are the 3 lines in a transformer?

A: The three lines in a transformer symbol represent the two coils and the iron core of the transformer. The two parallel lines represent the coils, while the "H" shape between them represents the iron core.

Q: What is the dot on the transformer symbol?

A: The dot on the transformer symbol is used to indicate the polarity of the windings. When the dot is placed at the end of one of the windings, it indicates that the winding has a positive polarity, while the other winding has a negative polarity.

Q: What is called transformer?

A: A transformer is an electrical device that transfers energy from one electrical circuit to another through electromagnetic induction. It is commonly used to increase or decrease the voltage of an alternating current (AC) power supply, as well as to isolate one circuit from another. Transformers come in a wide range of sizes and configurations, and are used in a variety of applications, including power generation, transmission, and distribution, as well as in electronic devices and appliances.