, OF "Lltu SC 





CONTENTS 



PAGE 



Introduction 3 



CHAPTER I 

 Testing for Open-Circuits, Short-Circuits, Polarity, Air- 



Gap i 5 



CHAPTER II 

 Saturation Tests, Generator, Motor, Ballistic ... 13 



CHAPTER III 



Core Loss Tests, Open-Circuit, Short-Circuit, Decelera- 

 tion .... 19 



CHAPTER IV 

 Field Compounding Tests and Maximum Output Tests 33 



CHAPTER V 

 Heating of Electrical Machines Actual Load Tests . 36 



CHAPTER VI 

 Heating of Electrical Machines Equivalent Load Tests 45 



CHAPTER VII 

 Regulation Tests for Speed and Voltage Input-Output 



Tests 50 



CHAPTER VHL... 



Phase Characteristic Synchronous and Static Imped- 

 ance Wave Form Potential Curve . * . . . 54 



CHAPTER IX 

 Direct Current Generators Preliminary Tests and 



Efficiencies . . . . . \ . . . 60 



' CHAPTER X r 



Direct Current Generators Gommutating Poles Loca- 

 tion of the Electrical Neutral . . . . . 71 



CHAPTER XI 

 Direct Current Stationary Motors ..... 76 



CHAPTER XII 

 Direct Current Railway Motors 82 



