Uninterruptible Power Supplies (Hardcover, 1st)

CHAPTER ONE: Standby and Power Generating Sets

Introduction

The Generating Set and Its Supporting Systems

The Power Rating Classification of Diesel Engine Driven Generating Sets

The Power Unit

Alternating Current Generators

Voltage Regulators

Speed Governors

Voltage and Frequency Performance Classes for Diesel Engine-Driven Sets

Starting Mechanisms

Fuel Systems

Engine Cooling Systems

Engine Room Ventilation

Exhaust Systems

Control Systems

Remote Control and Monitoring

Location of Equipment

Bibliography

CHAPTER TWO: Interconnecting the Standby and Normal Supplies

Introduction

Separating the Essential and Nonessential Loads

Use of Multiple Generating Sets

Interconnections with the Normal Supply

The Generator Voltage

The Electricity Supply Regulations 1988

Engineering Recommendation G.59/1

Earthing the Neutral of the Standby Supply

Neutral Connections for Single Sets Not Intended to Run in Parallel with the Normal Supply

Neutral Connections for Multiple Sets Not Intended to Run with the Normal Supply

Paralleling the Standby and Normal Supplies

Overcurrent Protection of the Standby Supply

Switchgear

Bibliography

CHAPTER THREE: Additional Information Relating to the Standby Supply Installation

Introduction

Sizing the Engine and Generator

Reliability and Redundancy

Routine Test Runs

Kilowatts, Kilovars, and the Harmonic Components of the Load Current

Characteristics of Particular Loads

Vibration

Noise 108

Safe Working Procedures

Bibliography

CHAPTER FOUR: Harmonic Distortion of the Supply

Acknowledgment

Nonlinear Loads and Current Distortion

Harmonics Generated by Bridge Rectifiers

The Effect of a Bridge Rectifier on a Supply System

The Effect of Bridge Rectifier Loads on Local Generators

Reduction of Distortion Due to Rectifier Loads

Switched Mode Power Supplies

Bibliography

CHAPTER FIVE: Static Uninterruptible Power Supplies

Definition

Background

Basic Design

Subassemblies

Rectifiers

Harmonics and Effect on Design

Inverters

Types of Loads

Typical Specification

Static Switches

Designs Now Available

Monitoring

Bibliography

CHAPTER SIX: Rotary UPS Systems

Definitions

Background

Rotating Transformer Systems

Generator/Clutch/Machine

Acknowledgments

CHAPTER SEVEN: Batteries

Introduction

Types of Cell

Lead Acid

Nickel-Cadmium Cells

Comparison of Various Types of Cells

Future Trends

Bibliography

CHAPTER EIGHT: Kinetic Energy as an Alternative Power Source

Introduction

Circuit Developments

Flywheel Type En Vacuo

Flywheel Type in Helium

CHAPTER NINE: Notes on Systems Installation

CHAPTER TEN: Some System Failures: The Light of Experience!

Introduction

Lack of Ventilation

A Bypassed Radiator

Lack of Fuel

Changeover of Supplies Without a Break

Restoration of Supply to an Inertially Loaded Drive

Low Transformer Oil Level Due to Low Ambient Temperature

Inadequate Protection Against Driving Rain

Unconventional Use of a Harmonic Filter

An Unstable Power Supply

An Overenthusiastic Charging Regime

Loose Intercell Connections on a UPS Battery

An Unsuccessful Attempt at Cost Reduction

Empty Sumps

Lack of Cooling Air

An Inadequate Supporting Structure

INDEX