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What is a Power Transformer and How Does it Work ?

Dec, 2022

A power transformer is an electrical device used to transmit electrical power from one circuit to another without making any change in the frequency. It transmits electrical power between generators and distribution primary circuits. It can step-up or step-down the voltage in the distribution network to suit the needs of the end user.

Power transformers work on Faraday’s law of electromagnetic induction which is the working principle for all transformers, inductors, motors, and generators. This law states that when a closed loop is brought near a fluctuating magnetic field, an electromotive force will be generated all across the system. The magnetic flux produced by the primary winding passes through a ferromagnetic core to be transmitted effectively to a secondary winding. The magnetic flux will then induce an electromotive force in the secondary winding due to electromagnetic induction. The induced electromotive force will stimulate the flow of current in the secondary winding. These are the main parts of a power transformer:

  • Core components
  • Windings
  • Insulating materials
  • Tap changer
  • Transformer tank
  • Cooling system

The final build and configuration of the device depend on where it is to be used and under what conditions. It comes in many variants based on the need of the requirement; however, the most commonly used variants are the liquid-immersed ones which are mostly suited for factories and other high-power consumption units like power plants, Transmission networks and Substations.

With India outpacing the rest of the world, it is poised to be the manufacturing hub of the world giving a tight competition to China. We already have scores of companies setting up their production base in India on account of cheap and skilled labour. This, in turn, has spiked the need for a reliable source of power generation and distribution system which is of utmost importance if we are to run our factories and offices. Power transformers form an integral part of the system and carry the most important task of managing the power voltage before it is released to the end users.

Introducing Elmag Transformers, an industry-leading manufacturer of power transformers with over 15 years of varied experience in the field. We have a solid track record of unmatched quality, performance, and immaculate customer service we are truly proud of and strive to meet our customers’ expectations with each offering. What sets us apart is our uncompromising commitment to quality and performance; we are an ISO 9001:2015 compliant company and also conform to the highest engineering standards such as IS 1180 and IEC Standards. Our production system is designed by our team of experts while considering market conditions, ground realities, and expert calculations. This allows us to maintain our existing systems while giving space for further addition in the future to upscale our competencies. At the heart of all our efforts are our customers who are the key to our success and all our endeavours. We no longer engage in competing with our peers or direct our efforts at meeting our revenue goals; instead, we incorporate our learnings, experiences, and the latest technology to deliver solutions that determine the course of our future.

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What is a Power Transformer and How Does it Work?