Current Transformers

A reliable source for Electric Transformers information and leading Electric Transformers Companies & Manufacturers.

Current transformers are very important parts of power grid flow measurement; they can be found in large volumes on all power grids at specific intervals. They are also found mounted on homes and businesses for the purposes of measuring electricity flow; these transformers are fitted with meters that can be easily read by utility workers. Read More…

Current Transformers Current transformers are tools that are used to measure the current, or flow of electricity, in electrical transmission lines. Understanding a current transformer requires an understanding of electrical current. Electrical current is measured in amperes, and one ampere is equal to the movement of 6.241 × 1018 electrons passed a given point per second. While power transformers control voltage, current transformers can measure and control movement for measuring purposes and to help control the flow of electricity to electronic devices.

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. We will never let you walk out the door with a substandard product. If high quality is demanded, that is what we will offer. Let us help you today! Give us a call or visit us online to learn more.

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Johnson Electric Coil Company $$$

Perris, CA  |  951-277-0757

For over 50 years, Triad Magnetics has been designing & manufacturing electric transformers for a wide range of industries. In Triad’s standard product line, they have over 1,000 part numbers, which means you are most likely to find what you're looking for. Whether you need switchmode, wall plug-in, inductors or audio transformers, Triad Magnetics either has it in stock or they can custom design.

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Triad Magnetics $$$

Pelham, NY  |  800-431-1064

At Pico Electronics, we are a big name in small components. Our excellent customer service and support is a wonderful accompaniment to our quality electric transformers. We also have capabilities to provide custom transformers, power transformers, current transformers, isolation transformers, toroidal transformers and high voltage transformers. For more information, contact us today and tell us how we can fulfill your requirements.

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Pico Electronics, Inc. $$$

Cincinnati, OH  |  800-963-9799

Since 1937, we have been specializing in the design and manufacture of custom ferrite transformers, chokes, toroids, inductors, pulse, RF, switching, power telephone balun and other specialties. Check out our website for more information on our full spectrum of products and services.

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Foster Transformer Company $$$

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. When you do business with Lenco, you can do it with confidence that your product was designed and engineered by professionals. Your special application is our specialty, so call Lenco today!

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Lenco Electronics, Inc. $$$
placeholder image Johnson Electric Coil Company Triad Magnetics Pico Electronics, Inc. Foster Transformer Company Lenco Electronics, Inc.

Because of the role they play in the measurement and control of the flow of electricity, current transformers are an essential part of all electricity control and access systems. Current transformers are used to obtain the measure of current in an AC power transducer. Current transformers also retain the ability to transform current to a value suitable for measurement or control. These transformers provide isolation and a step-down current output.

SMD Current Sense Transformer Current Transformers - Triad Magnetics

Accuracy and cost of current transformers depend on core materials. In a current transformer, the wire to be gauged is placed within the opening of the device and a measure of either alternating voltage or alternating current is produced.

The simplest form of a current transformer consists of two coils of wire, electrically insulated from one another and arranged so that a change in the current in one coil (the primary) will produce a change in voltage in the other (the secondary).

The transformers are designed to provide a current in its secondary, which is accurately proportional to the current flowing in its primary. There are several types of current transformers including protective, measuring, air-gapped, anti-remanence, wideband and linear current transformers as well as differing styles including split core and clamp-on current transformers. As is true with all other electricity control and measuring equipment, extra care must be taken when servicing or inspecting current transformers in order to avoid injury or equipment damage.

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