AC MACHINES-1 (66761) Theory
Completion requirements
7. Realize the construction and Principle of operation of three phase transformer.
7.1. Describe the construction of three phase transformer.
A three phase transformer is a three-legged iron core. Each leg has a respective primary and secondary winding. Most power is dispersed in the form of three-phase AC. Basically the power company generators produce electricity by rotating 3 coils or windings through a magnetic field within the generator.
Three Phase transformers are widely used as Power transformers, Distribution transformers and in Electrical Grids. When we generate the Power using an alternator(AC), the voltage at which it is generated is of mostly 11KV( Sometimes a bit more than that but not too high due to insulation constraints).