Franklin, A C creator Franklin, D P text London Butterworths 1983 monographic eng

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815 The J&P Transformer Book, 11th Edition deals with the design, installation, and maintenance of transformers. The book contains technical information, tables, calculations, diagrams, and illustrations based on information supplied by transformer manufacturers and related industries. It reviews fundamental transformer principles, the magnetic circuit, the characteristics of, and general types of transformers. The text contains tables showing the information that should be given to the transformer manufacturer to be used as a basis in preparing quotations. Transformer designs include three important distinct circuits to minimize losses: the electric, the magnetic, and the dielectric circuits. The book emphasizes that the maximum efficiency of any transformer occurs at the load at which the iron loss equals the copper loss. The text also discusses how the maximum overall operating economy of transformer substations, especially those with several transformers operating in parallel, can be effected by reducing the total transformation losses to a minimum under all loading conditions. The book is an essential reference for architects, system planners, or electrical engineers concerned with design, installation, and maintenance of transformers. It can also prove useful for electrical engineering students. Contents 1 Fundamental Transformer Principles 2 The Magnetic Circuit 3 General Types and Characteristics 4 Transformer Inquiries and Tenders 5 Transformer Efficiencies 6 The effect of Load Factor Upon the Value of Transformer Losses 7 Polyphase Connections 8 The Scott and the Le Blanc Connections 9 The Interconnected Star and the Open Delta Connections 10 Multi-Winding Transformers: Including Tertiary Windings 11 Transformer Tappings 12 Voltage Variation by Tap Changing 13 Performance and Type Tests 14 Phasor Representation of Transformer Test Conditions 15 Impulse Testing of Transformers 16 Dispatch, Installation, and Maintenance of Oil Immersed Transformers, Including Drying Out on Site 17 Transformer Oil 18 Parallel Operation 19 The Minimum Total Loss Loading of Substation Transformers Operating in Parallel 20 Neutral Point Earthing 21 The Three-Phase, Interconnected Star Neutral Earthing Transformer and Static Balancer 22 Transient Phenomena Occurring in Transformers 23 Transformer Protection 24 Failures and their Causes 25 Effects of Sustained Abnormal Operating Conditions 26 The Influence of Transformer Connections Upon Third-Harmonic Voltages and Currents 27 Electromagnetic Forces in Transformer Windings 28 Transformer Noise Electrical 621.34 FRA 978-0-408-004947 Prof S K Jhajharia BSDU 180706 20200108124936.0 English