Single Phase Power Transformers for Light Duty Applications

Single Phase Power Transformers
Single phase power transformers are designed to accept a single-phase AC current and produce single-phase AC power. It means the transformer relies on a voltage cycle operating in a particular uniform time phase. The power produced is typically lower or higher voltage levels. In these transformers the energy is transferred between circuits through the principle of electromagnetic induction. Custom Coils specializes in the designing and manufacturing of single-phase power transformers for light and heavy duty applications. We regularly deliver single-phase power transformers to our clients across power generation and distribution industries.

Working Principle of Single Phase Transformers

The transformer comprises three main parts— a magnetic core, a primary winding, and a secondary winding. This transformer works on the basis of Faraday’s law of electromagnetic induction. The law of electromagnetic induction states that the “Induced electromotive force (EMF) of the coil is directly proportional to the rate of change in linkage flux.” This law is best explained through the working of the circuit:

  • The primary and secondary windings comprise insulated copper wires, which are wound on a common magnetic circuit known as the core.
  • This core is made of ferrous material and comprises seven iron layers, which are laminated together. This lamination helps reduce losses.
  • The primary winding of the transformer is connected to an AC source, whereas the secondary winding is attached to the load.
  • Being connected to the common core allows easy power transfer from one coil to another.
  • The magnetic field is produced when a high voltage current is made to pass through the primary coil. This magnetic field collapses in the iron core and induces a voltage in the secondary winding.
  • Collapse of the core and building of the power in the secondary winding is called magnetic flux. In the AC circuit, the frequency is defined as 60 Hz, which means the flux repeats 6 times in a second, and 60 times in a minute.
  • The induced voltage and amperes produced is determined by Faraday’s law. Thus, the values of the same can be easily changed by altering the primary and secondary windings.
  • The highest voltage to be used in a single-phase transformer is controlled by industrial regulations.
  • Single phase power transformers having the ratio of 1:1 is used for isolating circuits.

Owing to its typical construction and operating principles, these power transformers are used for stepping down long-distance transmission currents so that they can be utilized for residential and commercial applications.

Types of Single Phase Power Transformers

We regularly design and provide different types of single phase power transformers:

Things to Consider When Buying Single Phase Power Transformers

Custom Coils specializes in custom single phase power transformers. We help clients to build a custom solution for their diverse power needs. We suggest them to make the decision on the basis of the following factors:

  • Primary Voltage Rating: This is basically the input voltage range.
  • Secondary Voltage Rating: It is the output voltage range.
  • Operating Temperatures: The temperature of the transformer may increase when in use, thereby affecting its performance. Thus, safe operating temperatures are decided.
  • Operating Frequency Ranges: The transformers designed for higher operating frequencies are compact sized because they require small amounts of windings.
  • Secondary Current Rating: It is the output current rating.
  • Power Rating: This is the maximum voltage that the transformer can endure. This is often expressed in the units of voltage-amperes or volt-amps.

Single Phase Power Transformer Features and Specifications

  • X:Y ratio definition
  • Voltage IN: Voltage OUT definition
  • Single or multiple outputs
  • Defined voltage isolation
  • Flying leads with Quick Disconnects
  • PC Mount
  • Can be designed to Meet UL/CSA Spacing and Safety Standard

Single Phase Power Transformers Construction and Design/ Design Elements

We can provide single phase transformers with the following design elements:

  • Cores: We mostly provide single phase transformers comprising laminated or toroidal cores. The laminated cores feature several alternating layers of steel laminations, as well as insulations. These insulated cores help confine eddy currents, and reduce the effect of magnetizing currents. Laminations are E-shaped, and equipped with I-Shaped Caps, and are often known as E-I transformers. We also provide C-shaped laminated cores.
  • Mounting: The transformers can be provided in various mounting configurations. We regularly deliver board-mount transformers. These transformers are widely used for circuit board applications, and they transfer voltages between different circuits.

Related Products

Single Phase Power Transformers Applications:

These power transformers are gaining popularity over three-phase transformers in various non-urban areas, where the power demand is low. It is seen that single phase power transformers are often combined with various household appliances for power saving. The lower-voltage output of these transformers is rectified into DC voltages, which helps to protect the appliance from power peaks and fluctuations. The single phase power transformers are used in the following applications:

  • Stereo systems
  • Televisions
  • Computers
  • Microwave ovens
  • Voltage reduction
  • Grid tie inverters

At Custom Coils, we are committed to delivering high-quality products, which offer the best value for the investment. This commitment has helped us become of the leading single phase transformer manufacturers in the US. Do you have specific single-phase transformers in mind? We will help you materialize it. Our experts will help you identify the challenges in your current design, and provide you solutions for improving efficiency. Please contact us at the earliest to know more.

Have a question about a single phase power transformer or any other custom magnetic assembly?

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Contact Us At 605.934.2460


Custom Coils
PO Box 348
109 Iowa Street
Alcester, SD 57001-0348

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