Transformer

Construction of Single Phase Transformer - Core & Shell Type

A transformer is a stationary ac machine used to raise or reduce the voltage levels. There are different types of transformers based on application. A transformer can be single-phase or three-phase. In this article let us s…

Three-Phase Transformer - Construction & Working Principle

Normally generation of power is usually at 3-phase from 11kV to 33kV. Transmission of generated power to the load centers is accomplished at higher voltages of 132kV to 400kV ( or 700kV ). For transmitting ( sending end ) t…

Transformer on No load - Phasor Diagram & Operation

In the no-load test of a transformer, the secondary winding of the transformer is kept open without connecting any load. The primary of the transformer is connected to the ac supply and evaluating the behavior of the transf…

Parallel Operation of Single Phase Transformers

In the last article, we have seen the reasons and conditions for the parallel operation of two or more transformers. Now let us see the parallel operation of single-phase transformers and how the load is shared among them.…

Efficiency of Transformer & Maximum Efficiency Condition

It is important to calculate the efficiency of any device. The efficiency of a device determines the performance of how efficiently the device is operated i.e., the capability of a device to give any amount of output energy…

Types of Losses in a Transformer - Iron & Copper Losses

Since the transformer is a static machine it doesn't contain any moving or rotating parts as compared to an induction motor. So there are no friction and windage losses due to bearings and due to air resistance. Hence, …

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