Uninterruptible Power Supplies and Standby Power Systems
Written by two experienced engineers, this book covers rotary UPS systems and battery selection, and offers complete, up-to-date guidance on design, installation, operation, and maintenance.
TABLE OF CONTENTS Uninterruptible Power Supplies and Standby Power Systems
Chapter 1: Standby Power Generating Sets
Introduction
This chapter briefly discusses where and why the need for standby generation arises and describes the systems that are included in a normal standby power generating set. Most standby generating sets are diesel engine driven and this book concentrates on such sets. A small number of sets above about 500 kW may be driven by gas turbines and the section titled The Power Unit includes an introduction to gas turbines. They are mentioned elsewhere in the text but their use and characteristics are not described in such detail as are the use and characteristics of diesel engines.
The Need for Standby Generation
The need for standby generation arises if the consequences of a failure or disruption of the normal supply are not acceptable. The types of installation in which the need arises seem to be limitless. There are basically four reasons for installing standby generation: safety, security, financial loss, and data loss.
Safety Where there is a risk to life or health such as in air traffic control, aviation ground lighting, medical equipment in hospitals, nuclear installations, oil refineries
Security against vandalism, espionage, or attack Area lighting, communication systems, military installations, etc.
Data loss Situations in which the loss of data may be catastrophic and irretrievable such as data processing and long-term laboratory type of testing or experiment
Financial loss Critical industrial processes, large financial institutions, etc.
Standby generation is often installed to provide a long-term back-up to an uninterruptible power supply which will have...
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