An uninterrutible power supply (UPS) can avoid potentially catastrophic havoc caused by electricity supply line disturbances. This book is a comprehensive guide to the various types of UPS systems available, showing how they may be specified and applied effectively.

• Chapter 1: Why the need arises


• Chapter 2: History and market growth


• Chapter 3: Dynamic systems with battery energy


• Chapter 4: Rotary systems with integral diesel engine


• Chapter 5: Static thyristor inverter system with battery energy store


• Chapter 6: Static transistor UPS incorporating battery backup


• Chapter 7: Batteries


• Chapter 8: Applications to air transportation


• Chapter 9: Applications to telecommunications


• Chapter 10: Harmonic distortion of UPS input and output voltages


• Chapter 11: UPS reliability


• Chapter 12: The specification