## Difference between Power Transformer & Distribution Transformer

This article describes the difference between a power transformer & distribution transformer. Power transformers and Distribution transformers are widely used in power systems for step-up and … Read more

## Difference between no load, exciting, and leakage current in transformer

The no-load current of a transformer is the vector sum of the exciting current and core loss current of the transformer. Why Losses in a … Read more

## Why is Power Factor of Transformer is Poor at no Load?

The transformer draws no load current from the supply source when its secondary is open circuit. The no-load current has two components: magnetization current(Im) and … Read more

## Why does not Transformer Work with DC Supply?

This article describes why DC is not used in transformers. The transformer functions on the principle of Faraday’s Law of electromagnetic induction. When AC is … Read more

## Harmonic Restraining in Differential Protection

The differential relay is used for the protection of the transformer, alternator, and large-rating HT motor. The differential protection scheme is also known as zone … Read more

## Single Phase Transformer and Application of Single Phase Transformer

The transformer transforms voltage from one level to another without changing the power and frequency. The transformer is static electrical equipment, and it does not … Read more

## Ideal Transformer-Properties, Phasor Diagram, Working

What is an Ideal Transformer? An ideal transformer is free from all losses. It has zero copper and iron loss and zero leakage flux, and … Read more

## Shell Type Transformer- Construction, Working & Applications

The HV and LV winding is wound around the central limb. The central limb carries the entire flux (Ф ). The flux (Ф ) divides into two equal part and thus each side limbs carries the half (Ф/2 ) of the total flux(Ф ). As a result, cross section area of the central limb is two times of the side limbs area.The arrangement of the winding around the central limb is as given below.

## Transformer Ratings- Formulas and Solved Problems

The maximum current a transformer can deliver to loads at the rated voltage is known as a transformer rating. It is expressed in VA, kVA, … Read more

## Voltage Regulation of Transformer-Definition, Formula

What is the Voltage Regulation of a Transformer? Voltage regulation of the transformer is defined as the percentage change in the transformer’s secondary voltage from … Read more