Autotransformer and Three Phase Transformer

UNIT V

Chapter7

Autotransformer and Three Phase Transformer

Syllabus

Construction and working of autotransformer, comparison with two winding transformers, applications of autotransformer. Three Phase Transformer- Construction, types of connections and their comparative features, Scott connection, applications of Scott connection.

Contents :

7.1 Autotransformer......................7-2 Dec.-03, 04, 05, 06, 07, 11, 14, 15, May-04, 05, 10, Marks 10

7.2 Introduction to Three Phase Transformer... 7 - 13

7.3 Construction of Three Phase Transformer... 7 - 14

7.4 Three Phase Transformer Connections ..... 7-15 May-04, 08, 10, 16, Dec.-04, Marks 8

7.5 Voltage and Current Relationships for Different Types of Connections .... 7-21 Dec.-05, 11, 14, May -11, 19, Marks 16

7.6 Conversion from Three Phase to Two Phase (Scott Connection)......7-27

7.7 Two Marks Questions with Answers............7-33