Electrical Applications 2
Published on 22. October 2013
152 pages
978-1-4831-4058-2 (ISBN)
Description
Electrical Applications 2 covers the BTEC NII level objectives in Electrical Applications U86/330. To understand the applications, a knowledge of the underlying principles is needed and these are covered briefly in the text. Key topics discussed are: the transmission and distribution of electrical energy; safety and regulations; tariffs and power factor correction; materials and their applications in the electrical industry; transformers; DC machines; illumination; and fuse protection. Included in each chapter are worked examples which should be carefully worked through before progressing to the next section. At the ends of chapters, further problems are provided for consolidation and self-testing; where these have numerical answers, they may be found at the end of the book. In a subject such as this, many problems ask for explanations and descriptions and here the answers must be sought in the text. When dealing with a descriptive question, a good diagram almost always helps to give a clear answer and saves many words of explanation. The book aims to promote this approach by the use of over 170 figures throughout the eight chapters.
More details
Other editions
Additional editions
D. W. Tyler
Electrical Applications: Level 2: Textbook
Book
12/1991
Butterworth-Heinemann
€16.08
Article exhausted; check different version
Content
Preface1 Transmission and Distribution of Electrical Energy Synchronous Generators Economics of Generation and Transmission Overhead Lines Comparison between Overhead Lines and Underground Cables Cost Environment Reliability Fault Finding Switchgear, Definitions and Uses Substation Layout and Equipment The Three-Phase System Load Balancing Industrial Installations General Arrangement Distribution Systems Radial System Ring System Distributor Calculations Radial Distributor Fed at Both Ends Problems for Section 12 Regulations Safety and Regulations The Electricity Supply Regulations Electricity (Factories Act) Special Regulations Fixed Apparatus Substations and Transformers The Institution of Electrical Engineers' Regulations for Electrical Installations The Health and Safety at Work Act Outline of the Requirements of the HASAWA The Health and Safety Inspectorate Comparison between the Scopes of the Regulations Problems for Section 23 Tariffs and Power Factor Correction Generation and Transmission Costs Capital Charges Running Charges Power Factor Maximum Demand Diversity Factor Load Factor Cost of Electrical Energy Domestic Industrial Problems for Section 34 Materials and Their Applications in the Electrical Industry Conductor Materials for Overhead Lines and Underground Cables Performance of Insulating Materials Loss Angle ¿ Breakdown Voltage Insulating Materials for Cables Cable Construction Materials Used in Electronic Circuits Conductor Screening and Coaxial Cable Printed Circuits Circuit Damage due to Overcurrents Heating of Cables Permitted Volt-Drops in Cables Effect of Ambient Temperature on Rating Cables in Ducts or in Close Proximity Heat Sinks The Insulation of Overhead Lines Eddy Current and Hysteresis Losses Magnetic Materials Minimization of Losses Permanent Magnets Magnetic Screening Problems for Section 45 Transformers Principle of Action of the Transformer EMF Equation The Single-Phase Transformer The Three-Phase Transformer Transformer Cooling The Auto-Transformer Advantages of the Auto-Transformer over the Double-Wound Transformer Disadvantages of the Auto-Transformer Current Transformers Voltage or Potential Transformers Measurement of Power and Power Problems for Section 56 DC Machines Principle of Action Power, Force and Torque Fleming's Rules For Motors For Generators The Action of the Commutator The Ring-Wound Armature The Lap Winding The Wave Winding The EMF and Speed Equations DC Machine Connections Shunt Series Compound The DC Motor Speed/Armature Current Characteristics The Torque Equation Torque/Armature Current Characteristics Motor Applications Speed Control DC Motor Starters The Addition of Resistance to the Armature Circuit The Manually-Operated Face-Plate Starter The Automatic Contactor-Type Starter Electronic Means The DC Generator Shunt-Wound Series-Wound Compound-Wound Armature Reaction Further Work on Commutation Armature Reaction Compensating Windings and Interpoles Changes in Characteristics due to Armature Reaction Losses in DC Machines Field Loss Armature Loss Commutator Losses Bearing Friction Windage The Power Flow Diagram For a Motor For a Generator Problems for Section 67 Illumination Lighting Standards Luminance and Luminous Intensity The Lumen and the Steradian
