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

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

Shell Type Transformer

Depending on the constrction of magnetic core, we can categorise transformers into two types Core Type Transformer Shell Type Transformer Core of Shell Type Transformer We use ‘E’s and ‘L’s shape laminations to make the core of the shell-type transformer. Limb of Shell Type Transformer The core of a single phase shell type transformer is … Read more

Transformer Rating

Manufacturer designs transformer based on required voltage and current and specified them on the nameplate of the transformer in terms of VA called the rating. It can be also said that the maximum voltage and current that can be safely applied to transformer called the rating. The rating of transformer depends upon temperature rise which … Read more

Voltage Regulation of Transformer

What is Voltage Regulation ? The voltage regulation is the percentage of voltage difference between no load and full load voltages of a transformer with respect to its full load voltage. Explanation of Voltage Regulation of Transformer Say an electrical power transformer is open circuited, means load is not connected with secondary terminals. In this … Read more

Parallel operation of Transformers

Why Parallel Operation of Transformers is required? It is economical to installe numbers of smaller rated transformers in parallel than installing a bigger rated electrical power transformers. This has mainly the following advantages, To maximize electrical power system efficiency: Generally electrical power transformer gives the maximum efficiency at full load. If we run numbers of … Read more

Transformer Inrush Current: Calculation & Theory

When an energy transformer is switched on from the primary side while keeping its secondary circuit open, it acts as a simple inductance. When electrical power transformer runs normally, the flux produced in the core is in quadrature with applied voltage as shown in the figure below. The flux wave will reach its maximum value, … Read more