Core Type Transformer

As we know there are mainly two types of transformer categorised by its shape of the magnetic core. These are core type transformer and shell-type transformer. We shall discuss here the core type transformer. The core of single phase core type transformer is single window core. This means there are two limbs as shown in … Read more

Electric Machines Transformers Generators and Motors

The machines which are operated in relation with electrical energy are called electric machines or electrical machines. In electrical machines, either input or output or both can be electricity. Types of Electrical Machines The electric machines are of three main types, transformer, generator, and motor. Electrical Transformer: In the transformer, both input and output are … Read more

Efficiency of Transformer

Introduction of Efficiency of Transformer Transformers form the most important link between supply systems and load. Transformer’s efficiency directly affects its performance and aging. The transformer’s efficiency, in general, is in the range of 95 – 99 %. For large power transformers with very low losses, the efficiency can be as high as 99.7%. The … Read more

Eddy Current Theory and Applications

What is Eddy Current According to Lenz’s law, a conducting loop when subjected to varying magnetic field gets an emf induced into it causing flow of current in a direction opposing the change causing it. The case goes similar to when instead of a conducting closed loop, the change in magnetic field through a conducting … Read more

Transformer Testing | Type Tests and Routine Tests of Transformer

For confirming the specifications and performances of an electrical power transformer it has to go through a number of testing procedures. Some tests are done at a transformer manufacturer premises before delivering the transformer. Transformer manufacturers perform two main types of transformer testing – type test of transformer and routine test of transformer. Some transformer … Read more

Ideal Transformer

Definition of Ideal Transformer An ideal transformer is an imaginary transformer which does not have any loss in it, means no core losses, copper losses and any other losses in transformer. Efficiency of this transformer is considered as 100%. Ideal Transformer Model The ideal transformer model is developed by considering the windings of the transformer … Read more

Single Phase Transformer and Applications of Single Phase Transformer

Transformer is electromagnetic static electrical equipment (with no moving parts) which transforms magnetic energy to electrical energy. It consists of a magnetic iron core serving as a magnetic transformer part and transformer cooper winding serving as electrical part. The transformer is high-efficiency equipment, and its losses are very low because there isn’t any mechanical friction … Read more

Open and Short Circuit Test of Transformer

Open and short circuit tests are performed on a transformer to determine the: Equivalent circuit of transformer Voltage regulation of transformer Efficiency of transformer The power required for open circuit tests and short circuit tests on a transformer is equal to the power loss occurring in the transformer. Open Circuit Test on Transformer The connection … Read more

EMF Equation of Transformer | Turns Voltage Transformation Ratio of Transformer

Emf Equation of Transformer EMF Equation of transformer can be established in a very easy way. Actually in electrical power transformer, one alternating electrical source is applied to the primary winding and due to this, magnetizing current flowing through the primary winding which produces alternating flux in the core of transformer. This flux links with … Read more

Different Types of Transformer Winding

Core and Windings of Three Phase Core Type Transformer There are different types of windings used for different kinds of applications and arrangements. Windings are the conductors wrapped in various forms like helical, disc, cylindrical, crossover which generates mmf that is carried by the core to other windings for having the different level of voltages. … Read more