Thursday 31 May 2018

Principle of step down transformer

In its basic form, a transformer consists of two coils with high mutual inductance that are electrically separated but have common magnetic circuit. In other words, its output is identical with respect to . It is designed to reduce the voltage from the primary win. The step - down transformer converts the high voltage (HV) and low current from the primary side to the low voltage (LV) and high current value on the secondary side. When it comes to the operation voltage, the step-up transformer .

Step - down transformer is made up of two or more coil wound on the iron core of the transformer.

It works on the principle of magnetic induction between the coils.

The voltage applied to the primary of the coil magnetise the iron core which induces the secondary windings of the transformer. It uses the principle of electromagnetic induction to change the voltage ( alternating difference) from one value to another whether smaller or greater. In these cases, a three-phase transformer is used in either to step-up or step - down the voltage.


A step down transformer is designed to reduce electrical voltage. Its primary voltage is greater than the secondary voltage. By law of conservation of energy, apparent, real and reactive power are each conserved in the input and output. Voltage Transformation Ratio (K). From the above equations we get.


A transformer converts alternating current (AC) from one voltage to another voltage. Step-up transformers have more turns on the secondary coil than they do on the primary coil. What is the output voltage if the input voltage is 500V ? The working principle of transformer is very simple. Actually, mutual induction between two or more winding is responsible for transformation action in an electrical transformer. Transformer works on the principle of mutual induction of two coils.


A wide range of transformer designs. This AC emf is then rectified by another . Step up transformer , step down transformer. In this video you will Learn the difference between step-up and step - down transformers in relation to voltage. More about this video: technology simulation v . A step-up transformer with 0turns on the primary fed . Working principle : it works on the principle of mut. For better understanding of Electromagnetic Theory one must read “ Principle of Electromagnetics by Matthew N. Such as “k” called turns ratio.


Electrical distribution is the final stage in the delivery of electricity to end users. Since the transmission system is typically rated from 130kV up to 700kV, substation step - down transformers are used to bring the .

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