8+FAQ About the Electrical Transformer Manufacturers

This is a quick overview of electrical transformer manufacturers. Most people, however, wouldn’t think that one company could be responsible for all the production of such devices, so in this article, we will discuss some specific companies within this industry group.

When choosing the right transformer, you need to know the best electrical transformer manufacturers that offer reasonably priced high-quality transformers. Investing in transformers may be quite expensive.

It is always recommended to research the different electrical transformers.

Compare and contrast your choices before you choose which transformer is the best for you.

DAELIM is one of the world’s top professional and electrical transformer manufacturers.

For more than 15 years, DAELIM has been committed to providing its customers with inexpensive, high-quality products.

These reliable transformers and electrical pieces of equipment follow international standards such as ANSI, IEEE, IEC, CSA, AS/NZ, etc.

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What Are Electrical Transformers?

Electrical transformers transfer electricity and change voltage levels from one circuit to another without generating electrical power. They also contribute to the efficiency and safety of power systems when they regulate voltage levels as needed.

Modern electrical transformers are designed to adapt to using an AC supply. This means that any fluctuation or change in the voltage supply can impact and cause a change in the current and vice versa.

These are used in industrial and residential areas, but they are mainly important for power regulation and distribution across places with long distances.

What Makes Up An Electrical Transformer?

For an electrical transformer to function accurately, all components must work individually and eventually together for optimum power regulation and distribution.

Generally, there are five important components in an electrical performer.

These are the magnetic core, a primary winding, a secondary winding, output, and input connections.

Input Connection

The input connection can also be called the primary side of the transformer.

This is where you will connect the main electrical power to be converted into a lower voltage.

Primary Winding

The primary winding is a coil that is attached to the electrical source where power is initiated.

This component is where magnetic flux is initially produced. From the primary winding where the flux is induced, it then passes through the magnetic core.

Magnetic Core

The magnetic core creates a magnetic circuit that allows the flux to pass through the primary winding to the secondary winding.

This part of the transformer serves as a magnetic conductor.

A low reluctance path is then placed inside the core to ensure that flux linkage is at maximum.

In almost all transformers, the assembly of the magnetic core appears as stacking laminated steel sheets.

This assembly ensures continuity in the magnetic path of the flux because of minimal air gaps.

Secondary Winding

The secondary winding completes the movement of the flux.

The coil delivers the transformed energy or the electrical power with converted voltage to the load.

Output Connection

Electrical power is then sent to the load through the out connection or the secondary side.

In the output connection, the electrical power is at the voltage level that the end-user needs.

pad-mounted transformer installation diagram
pad-mounted transformer installation diagram

How Do Electrical Transformers Work?

Electrical transformers follow Faraday’s Electromagnetic Induction Law.

This law states, “Rate of change of flux linkage concerning time is directly proportional to the induced electromagnetic field in a conductor or coil.”

A transformer’s maximum function depends on the mutual induction between the two windings linked by a magnetic flux.

These two windings, primary and secondary windings, share a laminated magnetic core.

Mutual induction allows the transfer of electricity from one circuit to another.

Maximum flux linkage must be passing through from primary to the secondary winding.

This can be done by a low reluctance path placed to both the windings.

If there is maximum flux linkage, the transformer will have increased efficiency and improved working performance.

When alternative voltage is applied in the input connection, this will create alternating flux in the core.

When this happens, an electromagnetic field is induced in both primary and secondary sides.

Then, the electromagnetic field in the secondary winding creates a load current.

The voltage level changes when an electrical transformer converts electrical energy from one value to an increased or a decreased value.

What are the Top 10 Transformer Manufacturers in the world and the USA?

Top electrical transformer manufacturers are continuously creating innovations to give consumers better transformers for their homes.

The list below presents the top 10 transformer manufacturers in the world and the USA.

Electrical Transformer Manufacturers
Electrical Transformer Manufacturers

General Electric

General Electric company is one of the best American conglomerate industrial transformer manufacturers that was founded in 1892. This growing conglomerate has an estimated annual revenue of $100 billion and is considered one of the top electrical transformer manufacturers in USA.

This top transformer manufacturer, headquartered in Boston, Massachusetts, operates through the following segments:

  • Power for power generation, industrial, government, customers related to energy production
  • Solutions involving renewable energy
  • Aviation for commercial and military aircraft engines
  • Healthcare for healthcare technologies in patient monitoring, medical imaging, and diagnostics


Siemens is a German conglomerate that is focused on combining the real world with digital and technological advancements. This top-performing transformer manufacturer was founded in 1847. It has continued to impact the world of transformers for 174 years already positively. The headquarters of Siemens is located in Munich, Germany, and Siemens has an estimated annual revenue of $90 billion.

This company is a technology-based company focused on infrastructure, industry, transport, and healthcare. This conglomerate believes that technology is the solution to everyone’s life. It serves people from all over the world and offers the following:

  • Resource-efficient factories
  • Resilient supply chains
  • Smarter buildings and power grids
  • Cleaner transportation
  • Advanced healthcare

Siemens believes that creating and improving technology adds real value to customers’ everyday lives.

Mitsubishi Electric

Mitsubishi Electric is a Japanese multinational company that focuses on electronics, and electronic equipment is celebrating its 100th year this year.

It was founded in 1921 and is headquartered in Tokyo Building, Marunouchi, Chiyoda, Tokyo, Japan.

This top electronics manufacturer serves people worldwide, with estimated annual sales of $39.84 billion.

At Mitsubishi Electric, its people aim to promote a vibrant and sustainable society through continuous technological innovations and creativity.


ABB is the leading technology company focused on energy, automation, and mobility.

It is a Swedish-Swiss multinational corporation with its headquarters in Zurich, Switzerland.

ABB was founded in 1988, and its estimated annual sales are at $27 billion.

Considered one of the world’s largest manufacturers of electric power equipment, they focus on transforming energy supply and delivering reliable operation of high-efficiency power systems.

It pushes the boundaries of technology in engineering and manufacturing all over the world.

ABB continues to innovate technology by connecting robotics, automation, and electronics to its power and control portfolio.


Toshiba is a Japanese multinational conglomerate corporation headquartered in Tokyo.

The company mainly conducts research and development of electronic products and related technology.

This multinational conglomerate corporation was founded in 1875, and it has estimated annual sales of $28 billion.

They also manufacture computers and other electronic equipment.

The company has subsidiaries or affiliates in many countries: Japan, Europe, the Americas, and Asia.

Schneider Electric

Schneider Electric is a global information and solutions provider.

Its unique expertise in power, automation, and electronics allows the company to provide its customers with innovative products and solutions that help them achieve their mission profiles.

They are a top French multinational company founded in 1836 with headquarters at Rueil-Malmaison, France. Its estimated annual sales are $25 billion.

This multinational company aims to encourage everyone to use energy and resources efficiently to bridge progress and sustainability for all humans.

Jiangsu Huapeng Transformer

Jiangsu HuaPeng Transformer Co., Ltd. is a leading global manufacturer of electric transformers, especially the power transformer product. Their products are widely used in the following areas:

  • Aerospace
  • Automobile
  • Electrical Equipment
  • Industrial Machinery
  • Offshore Oil & Gas
  • Power Generation & Transmission System etc.

This top manufacturer of electronic transformers was founded in 1967 and is headquartered in Jiangsu Sheng, China. Its estimated annual sales are roughly around $80 billion. JSHP Transformer is one of the world’s leading producers of Medium Power Transforms ( MPT) for power transmission. This is according to Fygen, a German-based data provider in the business.

Hyundai Heavy Industries

Hyundai Heavy Industries Co., Ltd. (HHI) is a leading Korean manufacturer of machinery, construction machinery, automotive machinery, marine equipment, and other heavy industries products. It was founded in 1972 and is headquartered in Ulsan, South Korea. The estimated annual sales of Hyundai Heavy Industries are around $35 billion.

They are a globally recognized manufacturer of transportation and energy-related equipment. It has its own dedicated and comprehensive innovation and technology development teams.

Hyundai Heavy Industries encompasses all aspects of technology and engineering to be able to meet customer requirements. This leading shipbuilding company offers global solutions for better mobility.


For over 60 years, TBEA has been an integral part of China’s transformer industry. They are well known for their quality products and customer satisfaction in the following areas:

  • Transformers
  • Cables
  • Wires
  • HV switches

TBEA Co. Ltd. was founded in 1993 and is headquartered in Xinjiang, China. This top-performing Chinese transformer manufacturer is also a specialist supplier of inverter and energy solutions for:

  • Design
  • Construction
  • Repair
  • Operation and maintenance of electric and wind power plants

China XD Electric Co Ltd

China XD Electric Company Limited, headquartered in Xi’an, China, was founded in 2008. It is a leading worldwide manufacturer and distributor of:

  • High-quality power transmission
  • Distribution and control apparatus

This top electrical transformer manufacturer has one of the largest industrial capacities in China for manufacturing, R&D, and testing. It also supplies and distributes instrument transformers, HV switchgear, insulators, capacitors, conductors, and electric reactors.

What Are Electrical Transformers Used For?

Electrical transformers have various purposes, but they are mainly used for:

  • Lowering the voltage of conventional and standard power circuits for low-voltage devices
  • Raising the voltage of electric generators to allow transmission of electric power across long distances.

Do Transformers Use AC Or DC?

Transformers are designed to work and operate only on AC or on alternating voltage and current.

When the primary winding connects to the DC supply, it can overheat or burn out.

This is because the primary winding will conduct a steady current producing constant flux.

Because of the constant flux, there is no electromagnetic field that will be generated.

Why Is The Transformer Rating Called KVA?

Electrical devices are rated based on the maximum power they can consume, transfer, or generate.

These units of measurement can be in KW (kilowatts), watts, KVA (kilo volt-ampere), or VA (volt-ampere)

Transformers use KVA as the unit of measurement.

Kilo Volt-Ampere is the unit of electric power when the power factor is not needed.

The power factor is not considered because KVA measures the output power, excluding the power factor.

Aside from transformers, alternators and UPS also use KVA as the unit of power.

Choose The Reliable Electric Transformers Manufacturer

Electrical transformers play a big role in your everyday life.

Because of transformers, electricity can power your homes and other appliances and devices that generate electricity.

Top electrical transformer manufacturers worldwide make sure that you are provided with the best-innovated transformer for your electrical needs.

When you purchase transformers from Daelim, you can be assured that you can get the best possible transformer.

At Daelim, we know that you value your transformer products, and we want to help you get the best products at an affordable price.

About Bin Dong

Hello, I am Bin, General manager of Daelim which is a leading transformer manufacturer. If you have problems when you are looking for the equipment, what you need to do is tell us.

Custom Pad Mounted Transformer

When you need to find more than just existing transformers, Daelim’s Transformer Service Center can help you design and produce distribution transformers that meet your unique needs.

We have our own factory and a professional team of engineers, which can design and modify application requirements that meet all your conditions.

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