Electrical Power Transformers - Read about various types of step-up transformers, step-down and isolation transformers.  Includes custom transformers and brand names such as Acme and Hammond Transformers.

Power Transformer Types:
Step-up Transformers - A transformer transposes alternating current (AC) from one voltage to another. Works on a magnetic induction principle that is designed to either step up or down. A step up transformer increases the voltage.

Step-down Transformers - A transformer transposes alternating current (AC) from one voltage to another. Works on a magnetic induction principle that is designed to either step up or down. A step-down transformer decreases the voltage.

Isolation Transformers - Transformers designed to provide electrical isolation without stepping voltage and current either up or down are called isolation transformers.

Custom Transformers - Offers built to order custom transformers such as dry type transformers, auto transformers, control transformers, and many more.

Buck Boost Transformers - The most common use for buck boost transformers are for boosting 208 volt lines to 230 or 240 volts, and vice-versa. These applications include both single and three phase lines.

Three Phase Transformers - Three phase transformers are used to change values of three phase voltage and current.  It is the most common way power is used. Find out about the different types of three phase transformers.

Single Phase Transformers - refers to the distribution of electric power using a system in which all the voltages of the supply vary in unison. Single-phase distribution is used when loads are mostly lighting and heating, with few large electric motors.

Low Voltage Transformers - A Low Voltage Transformer is an electrical device that transforms 120 volts (line voltage) into 12 volts or 24 volts (low voltage). Some uses for low voltage transformer are in landscaping lighting.

Medium Voltage Transformers - A Medium Voltage Transformer can be connected directly to a primary distribution circuit and generally has the most load diversity. These voltage transformers have installation practices that are generally in accordance with application recommendations from the Institute of Electrical and Electronic Engineers (IEEE).

High Voltage Transformers - A High Voltage Transformer operates with high voltages. Typically, these voltage transformers are used in power transmission applications, where voltages are high enough to present a safety hazard.

Distribution Transformers - Distribution transformers are generally used in electrical power distribution and transmission power. This class of transformer has the highest power, or volt-ampere ratings. and the highest continuous voltage rating.

Medical Grade Transformers - Transformers used in medical devices as well as hospital, biomedical and patient care equipment are generally referred to as Medical Grade Transformers. Strict safety rules, laws and guides are used to govern the design and construction of these transformers

Drive Isolation Transformers - They are used to isolate a drive from a main power line to prevent the transmission of harmonics that the drives produce back into the power line.  They stop drive harmonics from disrupting computers and other sensitive equipment.

Toroidal Transformers - Toroidal Transformers are more efficient than the cheaper laminated EI types of similar power level. Some of the advantages are smaller size, lower weight, less mechanical hum, (making them superior in audio amplifier), low-off-load loss.

Industrial Control Transformers - Industrial Control Transformers are used to convert the available supply voltage to the required voltage to supply industrial control circuits and motor control loads.

Pad Mounted Transformers - Pad Mounted Transformers are usually single or three phase, and used where safety is a main concern. They are typically used in restaurants, commercial buildings, shopping malls and institutions. 

Pole Mounted Transformers - Pole mounted transformers are used for distribution in areas with overhead primary lines. Outside a typical house one can see one of these devices mounted on the top of an electrical pole.

Dry Type Transformers - Dry-Type Transformers are available for voltages up through 34.5 kV (although the most common upper limit is 15) and KVA ratings up through 10,000 (with 5000 as the usual limit). Dry-type transformers lower the health and environmentally concerns by using air as a coolant.

Oil Filled Transformers - Oil Filled transformers are transformers that use insulating oil as insulating materials which helps cool the transformer.  The oil must remain stable at high temperatures over an extended periods because it also provides insulation between internal live parts.

Auto Transformers - An Autotransformer is an electrical transformer with only one winding with at least three electrical connection points called taps.  They are frequently used in power applications to interconnect systems operating at different voltage classes.

K Factor Transformers -  Some transformers are now being offered with a k-factor rating. A K-factor rating measures the transformers ability to withstand the heating effects of non-sinusoidal harmonic currents.

Harmonic Cancellation Transformers - Harmonic cancellation is performed with harmonic canceling transformers which are also known as phase-shifting transformers. A relatively new power quality product, harmonic canceling transformers are used for mitigating harmonic problems in electrical distribution systems.

Weatherproof Transformers - Enclosed transformers come with a weatherproof standard set by NEMA.

Power Transformer Manufacturers:
Acme Transformers - Acme transformers are designed to meet/and or exceed industry standards. They work to ensure customer satisfaction and deliver high quality products. 

Amveco Transformers - The world leader in Toroidal power products.  Their state-of the art manufacturing process have made the use of toroids more cost-efficient across a broad spectrum of applications.

Hammond Transformers - Leading supplier of transformers and enclosures for the electrical and electronic industries. It has become a global company with many customers worldwide.  Hammond offers a broad range of standard products and technical support to electrical and electronic manufacturers.

Marcus Transformers - Manufacturing company that produces quality built transformers for commercial and industrial users. They are large enough to handle any job, but small enough to give personalized attention.

TEMCo Transformers - Stock & Custom quality transformers offered at wholesale prices.  The TEMCo Advanced  Watt+Plus™ Technology ensures a longer life, greater efficiency and trouble free performance.

Federal Pacific Transformers - A manufacturing company that has been in business for 45 years.  "Power to deliver" describes their dedication to having you as a customer for life. They do this by having a wide variety of quality standard and custom products to choose from. You will find proven customer service; superior inventory; broad distribution; and, more convenient ways to do business.

Jefferson Electric Transformers - Manufacturer of dry-type transformers worldwide with customer and technical support services. Click on the link to find out more about Jefferson Electric Transformers.

General Electric Transformers - GE has the experience that you can count on.  They have been manufacturing top quality transformers since the 1920's. GE transformers have been redesigned to be quieter and more efficient.

Other Power Transformer Directory Categories:
Power Transformer Resources - In order to operate, electronic circuits all require power.  There are many sources of electrical power but one of the best is to use a power transformer. A transformer converts an ac voltage and current to a different voltage and current with great efficiency. Find more information on power transformers, the different types available, and a list of manufactures.
 

Power Transformer Related Categories:
Line Power Conditioners - Power or Line Conditioners regulate, filter, and suppress noise in AC power for sensitive computer and other solid state equipment.

AC Line Reactors - AC Line Reactors are a bi-directional protective filtering device used in conjunction with AC variable frequency and DC motor drives.

DC Power Supplies - Conversion of one form of electrical power to another desired form and voltage. This typically involves converting 120 or 240 volt AC supplied by a utility company to a well-regulated lower voltage DC for electronic devices.

Voltage Regulators - A Voltage Regulator is  an electrical regulator designed to automatically maintain a constant voltage level.  It may use an electromechanical mechanism, or passive or active electronic components.

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