Contents
PREFACE
ACKNOWLEDGEMENTS
INTRODUCTION
1 FUNDAMENTALS AND THEORY
2 PROPERTIES OF MATERIALS
3 PLASTICS AND RUBBER IN ELECTRICAL ENGINEERING
4 SEMICONDUCTORS AND SEMICONDUCTOR DEVICES
5 RECTIFIERS AND CONVERTERS
6 COMPUTERS AND PROGRAMMABLE CONTROLLERS
7 ELECTRICITY GENERATION
8 TRANSMISSION AND DISTRIBUTION
9 CABLES
10 TRANSFORMERS AND TAPCHANGERS
11 TARIFFS AND POWER FACTOR
12 REQUIREMENTS FOR ELECTRICAL INSTALLATIONS
(BS 7671)
13 LIGHTING
14 MOTORS AND CONTROL GEAR
15 SWITCHGEAR AND PROTECTION
16 HEATING AND REFRIGERATION
17 BUILDING AUTOMATION SYSTEMS
18 INSTRUMENTS AND METERS
19 ELECTRIC WELDING
20 BATTERY ELECTRIC VEHICLES
21 BATTERY SYSTEMS
22 CABLE MANAGEMENT SYSTEMS
23 HAZARDOUS AREA ELECTRICAL WORK
Introduction
The chief function of any engineer’s pocket book is the presentation in convenient form of facts, tables and formulae relating to the particular branch of engineering concerned.
In the case of electrical engineering, it is essential that the engineer should have a clear understanding of the methods by which the various formulae are derived in order that he can be quite certain that any particular formula is applicable to the conditions which he is considering. This applies with particular force in the case of alternating current work.
The first section of the Pocket Book is, therefore, devoted to the theoretical groundwork upon which all the practical applications are based. This covers symbols, fundamentals, electrostatics and magnetism.
When an engineer is called upon to deal with any particular type of electrical apparatus, for example a protective relay system, a thermostatically controlled heating system, or industrial switchgear and control gear, the first requirement is that he shall understand the principles upon which these systems operate. In order to provide this information, much space has been devoted in the various sections to clear descriptions of the circuits and principles which are used in the different types of electrical apparatus.
The inclusion of technical descriptions, together with the essential data embodied in the tables, will be found to provide the ideal combination for those engineers engaged on the utilization side of the industry, where many different types of equipment and electrical appliances, ranging from semiconductor rectifiers to electrode steam boilers, may have to be specified, installed and maintained in safe and efficient operation.
An extensive summary of the sixteenth edition of the ‘IEE Regulations for Electrical Installations’ (now BS 7671) is contained in Chapter 12. In 1992 when this was first issued as a British Standard, the layout and content were markedly different to the previous editions and for those personnel working in electrical contracting it is important that they obtain their own up-to-date copy of the Regulations. One of the most important changes in 1992 was the exclusion of many of the Appendices which were published as separate
Guidance Notes (see page 260). Another change was the inclusion of a new Part 6, ‘Special installations or locations’. Section 6 has been added to in the 2001 edition, and, in addition, in an extended Part 7, there is increased emphasis on periodic inspection and testing. More is said about these in the Preface and in Chapter 12.
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