Transformers, principles and applications

Contents
TRANSFORMER CONSTRUCTION by William Esty, Frank E. Austin, and Carl H. Dunlap...................1
Use of Transformers.........................1
Definition of Transformer..................2
Theory of Transformer Operation.........2
Electromotive Force of Induction.........6
Losses in Transformer................18
Commercial Types of Transformers.......20

TRANSFORMERS by W.A. Siefert..............37
How the Transformer Works.....37
Vector Diagram of the Transformer.....44
Classification of Transformers......51
Capacity of Transformers in Terms of Kilovolt-Amperes....63
Forms of Construction....65
The Magnetic Circuit....69
The Current Circuit....77
Methods of Cooling.....82
Heating and Temperature Control...86
Transformer Oil.....100
Mechanical Stresses....102
Tap Changers....105
Three-Winding Transformers...117
Autotransformers...119
Transformer Connections...126
Polarity of Transformers....160
Transformer Connections....174
Parallel Operation.........174
Current-Limiting Reactors...188

DESIGN OF SMALL TRANSFORMERS by Frank E. Austin....197
Practical Design.....197
Miscellaneous Details....216
Design of 2200-Volt Transformer....223
Design of 10-Volt Transformer....239
Design of 22-Volt Transformer...252
Design of Case for 220-Volt Transformer....257
Recapitulation....260