x CONTENTS 



CHAPTER PAGE 



Factor and Regulation. Losses. Inductance. Location. 

 Number of Reactors. Size of Reactor and Determination 

 of Three-phase or Balanced Short-circuit Currents. Single- 

 phase Short-circuit Currents. Mechanical Design. 



8. Switching Equipment 485 



System of Connection and Relay Protection. Oil Circuit 

 Breakers. Relays. Switchboards. Instrument Equipment. 

 Current and Potential Transformers. Exciter and Field 

 Control. Voltmeter and Synchronizing Receptacles. Am- 

 meter Transfer Switches. Throw-over Switches. Calibrat- 

 ing Terminals. Control Switches. Mimic Buses. Bus and 

 Switch Structures. Disconnecting Switches. Signal Systems. 

 Multi-recorder. Oil Circuit Breaker Batteries. 



9. Over-voltage Protection 593 



Classification of Over-voltages. Lightning Arresters. 

 Arcing Ground Suppressor. Short Circuit Suppressor. Pro- 

 tection of Telephone Lines. 



10. Station Wiring 625 



Insulation. Open Wiring. Cables in Ducts or Conduits. 

 Single vs. Multiple Conductors. General Practice. Size of 

 Cables. Corona Limit of Voltage. Economical Considera- 

 tions. Voltage Drop. Resistance and Reactance Tables. 



X. ECONOMICAL ASPECTS 644 



Preliminary Considerations. Guide for Preparing Water 

 Power Reports. Amount of Energy Available. Power De- 

 mand. Load and Diversity Factor. Primary and Second- 

 ary Power. Water Storage. Auxiliary Stations. Intercon- 

 nection of Systems. Investigating an Enterprise. Cost of 

 Hydro-Electric Power Plants. Cost of Power. 



XI. ORGANIZATION AND OPERATION 746 



Management. Operating Force. Operating Records. 

 Operating and Maintenance Instructions. 



APPENDIX: 



I. References to Descriptions of Plants 757 



II. Principal Data on Transmission Systems Operating at 70,000 



volts and above 783 



' III. Turbine Testing Code 788 



INDEX . 803 



