## AC Circuits RLC Circuits

Purely Resistive Circuit There is no capacitance as well as inductance available in a purely resistive circuit. If a current starts flowing through a purely resistive circuit there will be no back EMF generated in …

## AC Fundamentals (Alternating Current)

The current that changes its direction of flow with a certain frequency is called an alternating current. This is the reason, an alternating current circuit does not have any positive or negative terminal. This is …

## Transformer Oil or Insulating Oil and its Characters

There was no oil used in the earlier Transformers. But it was the necessity of using some effective insulating medium in the Transformers. In the year of 1892, the General Electric Company first used insulating …

## Electrical Transformers with Theory of Transformers

Definition of Electrical Transformer The transformer is a static device that transforms electrical energy from one circuit to another without changing its frequency. The transformer works on the principle of mutual induction. Types of Electrical …

## Electrical Busbar Systems

There are numbers of incoming and outgoing feeders and transformers connected together in an electrical substation. But practically it is not possible to connect all the feeders and transformers together at a particular point or …

## Insulation of Transformer

In a transformer, we need to provide the insulation between the core and LV winding and also between the LV winding and HV winding. The insulation comprises of backlight and paper. The insulation system consists …

## Transformer Winding Concentric Winding and Sandwich Winding

There are two forms of transformer windings. One is a rectangular form and another is a circular form. In spite of that, transformer windings can also be either concentric or sandwiches. In a single-phase core …

## Transformer Core Types, Material, and Laminations

Transformer Core Power transformers work depending upon the principle of mutual induction between two or more magnetically coupled windings. The proper mutual induction requires an efficient linkage of magnetic flux between the windings. Therefore there …

## EMF Equation of Power Transformer

Whenever we apply an alternating current to the primary of a power transformer there will be an alternating flux created inside the transformer core. The flux inside the transformer core will link with both of …

## Power Transformer – An Introduction to Power Transformer

The power transformer is the most essential part of electrical transmission and distribution systems. In our current era, most of the electrical systems operate with alternating current or AC. After the production of alternating power …