High Voltage Transformers

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Different kinds of power transformers are necessary to facilitate the transmission of electricity on different scales. Electricity is generated at electric power plants, and in order for that electricity to become usable by homes and businesses, it must be distributed at appropriate voltages. Read More…

High Voltage Transformers High voltage transformers are tools used to change the voltage of power lines in high voltage contexts. A volt is the unit of measurement for electromotive force, and the voltage of a power transmission line is the measurement of power transmission capacity in a transmission line.

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 $$$

Houston, TX  |  832-400-4985

AMGIS can supply your company with a variety of toroidal power products. Whether the application requires power toroidal transformers, toroidal inductors, commercial or medical isolation transformers, 3 phase transformers, auto transformers, high efficiency transformers for renewable energy, or custom toroidal applications, Amgis has a solution for your needs.

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Amgis Toroidal Power Products $$$

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. $$$

Telford, PA  |  267-384-5231

For half a century, Magnetic Specialties has created specialized electrical control components, subassemblies and devices for original equipment manufacturers of industrial equipment. Our business components include electric transformers, high accuracy instrument transformers, specialty transformers, toroids, inductors, filter, magnetic amplifiers and more. To learn more give us a call today.

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Magnetic Specialties, Inc $$$

Johnsburg, IL  |  815-385-2700

Prem Magnetics was organized in 1972 as the Magnetics Division of Prem Enterprises (a machine shop) to be a manufacturer of coils and transformers. Prem Magnetics remains a leader in the transformer industry. In addition to our Illinois production facility, Prem operates a facility in Tecate, Mexico to manufacture products to the same quality standards. We are located roughly 40 miles northwest of Chicago, allowing access to anywhere in the world via numerous shipping hubs.

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Prem Magnetics Inc. $$$
placeholder image Johnson Electric Coil Company Amgis Toroidal Power Products Lenco Electronics, Inc. Magnetic Specialties, Inc Prem Magnetics Inc.

These voltages vary based on the application of the electricity. When power is first generated at a power plant, it is directed to a high voltage transformer that distributes the electricity to high voltage transmission lines. From those lines the electricity is distributed to other, small transformers, which in turn distribute the electricity to large-scale users of electricity.

Chassis Mount Control Transformer High Voltage Transformers - Triad Magnetics

These users include industrial operations, large institutions like colleges, large office buildings and many other examples. Those same transformers also distribute electricity to the power lines that are visible along city streets. From there the electricity is distributed to many small, low voltage transformers that distribute electricity in appropriate voltages to residences.

High voltage transformers are built to handle elevated amounts of electrical energy in the range of 600 to 5,000 volts, although custom voltage transformers are available as well. A type of instrument transformer, high voltage transformers are often used for metering and protection in high-voltage circuits and in electrostatic industrial and scientific applications. Because they have the ability to step up primary voltage to a very high voltage, they are often also referred to as power transformers.

High voltage transformers are designed to present negligible load to the supply being measured and to have a precise voltage ratio to accurately step down high voltage. This capability is helpful when equipment, such as that for metering or protective relay, needs to operate at a lower potential.

Due to the high voltage and frequency that it must handle, a high voltage transformer has a significantly different core geometry, winding techniques, and insulation methods than ordinary transformers. For example, factors such as the volts/turn ratings of the secondary wire, insulating material dissipation and corona level must be carefully considered.

High Voltage Transformer Informational Videos