Why is the core of a power transformer grounded?
Transformer is a static piece of equipment and it has primary and secondary winding. The low voltage winding has few turns of wire wound around … Read more
transformer
What is the disadvantage of large exciting current in a transformer?
What is Exciting current? The exciting current in the transformer produces the magnetic flux in the core. When energizing transformer at no load, transformer draws … 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
Difference between Active and Passive Components
In this post, we will discuss the difference between Active and Passive components. We can differentiate active & passive components on the basis of the … Read more
Dry Type Transformers: Types and Applications
What is a Dry Type Transformer? A dry-type transformer does not use any liquid for its cooling and insulation. An oil-filled transformer uses mineral insulating … Read more
Effects of Harmonics on Transformers
The transformer does not generate harmonics. The transformer has primary and secondary windings, which are inductive. The inductive load draws current linearly with the applied … 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