What is the disadvantage of large exciting current in a transformer?

Transformer exciting current and flux graph

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 primary current which has two components – exciting current and loss current component.The disadvantage of large¬† exciting current is more losses in the transformer, and thus transformer efficiency deteriorates. The … Read more

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

The no load current of a transformer is vector sum of the exciting current and core loss current of the transformer. Why Losses in a Transformer? To understand the meaning of these currents in a transformer, it may be helpful to study the equivalent circuit of a single phase transformer. An ideal transformer¬† is the … Read more