Constructional features of Transformers
Transformers used in practice are of extremely large variety depending upon the end use. In addition to the transformers used in power systems, in power transmission and distribution, a large number of special transformers are in use in applications like electronic supplies,rectification, furnaces, traction etc. Here the focus is on power transformers only.
The principle of operation of these transformers also is the same but the user requirements different .Here more common constructional aspects alone are discussed. Power transformers of smaller sizes could be air cooled while the larger ones are oil cooled. These machines are highly material intensive equipments and are designed to match the applications for best operating conditions. Hence they are `tailor made' to a job.This brings in a very large variety in their constructional features. Here more common constructional aspects alone are discussed.
These can be broadly divided into
1. Core construction
2. Winding arrangements
3. Cooling aspects
