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Electric Transformers

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Electric Transformers

Electric transformers are crucial components of the electrical power system. They allow for the efficient transmission and distribution of electricity over long distances, making it possible to power homes, businesses, and industries. They are based on the principle of electromagnetic induction and were first developed in the late 19th century. Transformers revolutionized the power industry, allowing for the efficient transmission of power over long distances. Read More…

Electric Transformer Electric transformers are inductively coupled electromagnetic devices that pass on electrical energy between circuits. What this means is that they regulate voltage (va and kva). Specifically, transformers are capable of patterning, translating, isolating, and increasing and decreasing electrical currents of varying power levels.
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Leading Manufacturers

Antigo, WI  |  800-826-9741

We believe in offering the very best to all customers. We offer a full range of transformers, including electric transformers, current, and toroidal transformers.

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Johnson Electric Coil Company $$$

Perris, CA  |  951-277-0757

With more than 500 current transformer manufacturers in the world, Triad Magnetics realizes you have a choice. Why choose Triad? Having served the needs of many industries for more than half a century, Triad believes its experience makes the difference. And if there is one point experience has taught it, it is that it must remain flexible and adaptable to the changing needs of the market.

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Triad Magnetics $$$

McHenry, IL  |  815-344-2900

Lenco Electronics, Inc. specializes in a wide variety of custom electric transformers. Lenco’s success has not come about by accident, but by providing its customers with high-quality products.

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Lenco Electronics, Inc. $$$

Alcester, SD  |  605-934-2460

Custom Coils specializes in designing and manufacturing unique magnetic components. Since 1967 we have been a dependable source of transformers and inductors, becoming leaders in our field. We work hard to meet our customer's specifications and to ensure that they are more than satisfied. Our transformers are available in high voltage, switchmode, toroidal or trigger pulse styles, to name a few.

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Custom Coils $$$

Cary, IL  |  800-322-2645

Coilcraft serves a wide range of industries and markets with our high-quality, cost-effective electric transformers, custom transformers, toroidal transformers and power transformers. We guarantee that we keep a steady inventory of our products on hand at all times for your convenience.

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Coilcraft, Inc. $$$
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Components of Electric Transformers

Electric transformers have several key components, including a core, windings, insulation, tap changer, and a cooling system. The core is typically made of laminated steel and serves as the magnetic path for the transformer. The windings, which are made of copper or aluminum wire, are wrapped around the core and carry the electrical current. Insulation is used to separate the windings and prevent electrical arcing. The tap changer is a mechanism that allows for the adjustment of the output voltage, while the cooling system keeps the transformer from overheating.

Electric Transformer Tappings

Functioning of Electric Transformers

The basic principle of transformer operation is electromagnetic induction. An alternating current (AC) flows through the primary winding, creating a magnetic field that passes through the core and induces a current in the secondary winding. The voltage level in the secondary winding is determined by the ratio of the number of turns in the secondary winding to the number of turns in the primary winding. Transformers are classified based on their primary and secondary voltage levels and include step-up transformers, step-down transformers, distribution transformers, instrument transformers, and isolation transformers.

Variations of Electric Transformers

Step-up transformers are used to increase the voltage level of electricity from the power station to the transmission lines. Step-down transformers are used to decrease the voltage level of electricity from the transmission lines to the distribution lines. Distribution transformers are used to reduce the voltage level of electricity from the distribution lines to the level required by household appliances. Instrument transformers are used to measure electrical quantities such as voltage and current. Isolation transformers are used to isolate circuits and provide protection against electric shock. Three-phase electric transformers convert high voltage, low current electricity into low voltage, high current electricity. Auto electric transformers increase or decrease voltage in automotive electrical systems. Current electric transformers are used to measure electric current. Step-up electric transformers, meanwhile, increase voltage for long-distance power transmission.

Types of Electric Transformers

Limitations of Electric Transformers

Electric transformers have several limitations, including energy losses, environmental hazards, and cost. Energy losses occur due to the resistance of the windings and core, resulting in heat generation and reduced efficiency. Transformers also contain oil, which can pose an environmental hazard if leaked. Transformers are also expensive to manufacture and maintain, making them a significant capital investment.

Applications of Electric Transformers

Electric transformers have a wide range of applications in various industries, including power generation, transmission, and distribution, manufacturing, transportation, telecommunications, mining, oil and gas, military, and medical industries. They are essential for efficient power transmission and supply to various equipment and devices used in these industries. We examine these specific applications in greater detail below.

Power Generation Industry: Electric transformers are used in power generation plants to step up the voltage of electricity generated by the power plant to a high voltage level for efficient transmission over long distances.

Power Transmission Industry: Electric transformers are used in power transmission lines to step down the voltage of electricity to a level suitable for distribution over shorter distances to homes and businesses.

Power Distribution Industry: Electric transformers are used in power distribution lines to step down the voltage of electricity to a level that can be safely used by homes and businesses.

Electric Transformer for Power Distribution

Manufacturing Industry: Electric transformers are used in manufacturing processes to supply power to various machines and equipment.

Transportation Industry: Electric transformers are used in trains and trams to supply power to the motors that move the vehicles.

Telecommunications Industry: Electric transformers are used in telecommunications systems to supply power to network equipment such as routers, switches, and servers.

Mining Industry: Electric transformers are used in mining operations to supply power to heavy machinery used in excavation, drilling, and hauling.

Oil and Gas Industry: Electric transformers are used in oil and gas exploration and production to power pumps, compressors, and other equipment.

Military Industry: Electric transformers are used in military equipment such as radar systems, communication systems, and other electronics.

Medical Industry: Electric transformers are used in medical equipment such as MRI machines, X-ray machines, and CT scanners to supply power to the equipment and ensure accurate and reliable operation.

The Future of Electric Transformers

As previously discussed there are various types of electric transformers, and while they have limitations, their benefits outweigh their drawbacks. The future development of electric transformers is likely to focus on improving efficiency and reducing environmental hazards.These developments could include the use of new materials, improved cooling systems, and alternative designs.

Choosing the Right Electric Transformer Supplier

To ensure you have the most positive outcome when purchasing electric transformers from an electric transformer supplier, it is important to compare several companies using our directory of electric transformer suppliers. Each electric transformer supplier has a business profile page highlighting their areas of experience and capabilities, along with a contact form to directly communicate with the supplier for more information or request a quote. Review each transformer supplier business website using our patented website previewer to quickly learn what each company specializes in. Then, use our simple RFQ form to contact multiple electric transformer companies with the same form.

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Electric Transformers Power Pages

Electric Transformers

Electric Transformers

Electric transformers are static electrical machines that transform electric power from one circuit to the other without changing the frequency. An electrical transformer can increase or decrease the voltage with...

Isolation Transformers

Isolation Transformers

An isolation transformer, just like typical transformers, is a non-moving device that transmits electrical energy from one circuit to another without requiring any physical contact. It works on the idea of magnetic...

Power Transformer

Power Transformer

Power transformers are electrical instruments used in transmitting electrical power from one circuit to another without changing the frequency. They operate by the principle of electromagnetic induction. They are used in transmitting electrical power between...

Three-Phase Transformers

Three-Phase Transformers

An electrical transformer is a passive machine that transfers electrical energy from one circuit to another using a magnetic flux to induce an electromotive force. Transformers are used to increase (step-up) or decrease (step-down) voltages without changing the frequency of the electric current...

Toroidal Transformers

Toroidal Transformers

A toroidal transformer is a type of electrical transformer constructed with a torus or donut-shaped core. Its primary and secondary windings are wound across the entire surface of the torus core separated by an insulating material...

Types of Electric Transformers

Types of Electric Transformers

Electronically operated equipment depends on power transformers to convert electrical currents into voltage. Current transformers store and transport energy through power lines and grids...

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