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Electrical Power Transformers: Important Facts & Basic Concepts

By Author: Brilltech Engineers
Total Articles: 10

Transformers are the devices that are widely employed for the purpose of stepping up & stepping down of voltage. These devices are widely employed in array of electronic devices so that proper voltage can be fed into these. The major electronic devices that use these components are television sets, media players, mobile chargers, machines & various other things.

Their main area of operation is the stepping up & step down of voltage. On the larger scale, these are employed for distribution of power from one place to other. Power is transferred at very high voltage in order to avoid losses. During transmission power losses takes place & we all know that power is a scarce resource & any losses need to be avoided. For this purpose, power is transmitted at very high voltage so that minimum losses can take place. But at home or industries, voltage is needed at lower level as compare to the supplied voltage from the power house. So in order to lower down the voltage level at the same frequency power transformers are used.

These are also employed at in various machineries & electronic gadgets that need essentially lower voltage than the supplied. Devices like television sets or mobile chargers need essentially low voltage level so in order to protect electrical appliances.

The transformers work on faraday principle. In this, the supply is provided at the primary winding. The time varying electric field affects the flux which in turn induces voltage in the secondary. The induced voltage is widely influenced by the number of turns in the secondary.

The Main Components That Widely Influence The Performance & Operation Are Listed Below.

Core: The material having the high permittivity is used for making this. The highly permeable material is used to avoid the losses that occur in the air. With the help of highly permeable path, low reluctance path is provided to the flux in order to offer optimum performance. The thickness of the laminated cores also plays an important role in the operation. It ranges from 0.5mm to 0.25mm. The cores are also laminated with the insulated coating so that efficient performance can be achieved.

Winding: The performance of this device is widely influence by windings. Every transformer contains two types of windings i.e. primary & secondary. The number of turns directly influences its performance. The higher voltage side contains more number of turns while lower voltage side contains lesser number of turns. Copper is the preferred choice of material owing to its high conductivity.

Cooling Aspects: Losses occur in this in the form of heating. So, in order to avoid any heating oil & various other solvents are employed. The dry types are simply cooled with the help of air as their rating is in few kVA. The higher rating power transformers are cooled with the help of oil or solvents


Brilltech Enginners is counted as leading electrical transformer manufacturers from Noida, India. Also supply all kinds of power transformer all over the world at best price. Visit our website for more information at:http://www.brilltechgroup.com/

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