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    Overhead Distribution Lines

    Design and Applications

    AvLawrence M. Slavin

    Inbunden, Engelska, 2021

    Del i serien Standards Information Network

    1 082 kr

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    E-bok

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    E-bok

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    Beskrivning

    A general overview of the use of utility distribution poles, including for electric supply and communications applicationsOverhead Distribution Lines: Design and Applications provides information on the design and use of power and communication distribution lines. An excellent resource for those in the power and communication utilities industry, this book presents information on the physical characteristics of utility poles, overhead supply and communication cables, installation practices, joint-usage issues, and safety rules, including the National Electrical Safety Code (NESC), California-specific rules, and others. It describes how to select the proper poles for specific applications. The especially valuable final chapter provides examples showing how it all works in practice, providing a background allowing more effective use of related industry software.Rather than delving into detailed design and installation techniques, this book serves as an overview for engineers and non-technical audiences alike. At the same time, it serves as a compendium of technical information not readily available elsewhere. This unique book: Offers an overview of pole structures, pole installation and maintenance, wires and cables, and cable installation and maintenance—with examplesProvides information on national standards documents such as the National Electrical Safety Code (NESC), ANSI O5.1, California General Order 95, and moreExplores the "sag–tension" relationship between wires and polesIncludes appendices that cover properties of messenger strands, wireless attachments, solution of equations to determine sag, under uniform and point loadsOverhead Distribution Lines: Design and Applications offers readers an understanding of the basic principles and various issues related to electric supply and communications distribution lines. It is a valuable resource for utility engineers, as well as those without a technical background.

    Produktinformation

    • Utgivningsdatum:2021-03-09
    • Mått:155 x 234 x 10 mm
    • Vikt:340 g
    • Format:Inbunden
    • Språk:Engelska
    • Serie:Standards Information Network
    • Antal sidor:144
    • Förlag:John Wiley & Sons Inc
    • ISBN:9781119699132

    Utforska kategorier

    • Klassisk mekanik inom Naturvetenskap och teknik

    Mer om författaren

    Lawrence M. Slavin, PhD, is Principal of Outside Plant Consulting Services, Inc. (OPCS). He represents the nation's telephone industry, via the Alliance for Telecommunications Industry Solutions (ATIS), on several NESC technical subcommittees, as well as the Executive Subcommittee, Main Committee and Interpretations Subcommittee. He also serves on Accredited Standards Committee ASC-O5 for wood products, including ANSI O5.1, Wood Poles, Specifications and Dimensions, and is a member of the ASCE 7 Atmospheric Ice Loads Subcommittee.

    Innehållsförteckning

    • About the Author xiPreface xiiiAcknowledgments xv1 Introduction 11.1 Scope 11.2 Background 22 Pole Structures 72.1 General 72.2 Wood Pole Strength 82.3 Loads 132.4 Embedment Depth 152.5 Guying 172.6 Column Buckling 192.7 Grounding and Bonding 223 Pole Installation and Maintenance 233.1 Pole Placement 233.2 Guys and Anchors 243.3 Pole Maintenance 264 Wires, Conductors, and Cables 314.1 Categories 314.2 Messenger Wire/Strand 314.3 Electric Supply (Power) Cables 334.4 Communications Cables 354.5 Wireless Attachments 385 Cable Installation 395.1 Conductor and Cable Placement 395.2 Lashing Operation 405.3 Overlashing 416 NESC® Requirements (Strength and Loading) 456.1 National Electrical Safety Code (NESC) 456.2 Loading Requirements 466.3 Strength Requirements 496.4 Wire Tensions 526.5 Guyed Poles 536.6 Extreme Wind Loads (“60 ft Limit”) 546.7 Allowable Deterioration 566.8 Overlashed Cables 576.9 Software Tools and Pole Loading Analysis 607 NESC® Requirements (Clearances) 637.1 Clearances 637.2 Clearance Zones 637.3 Clearances Above Surfaces and Buildings 667.4 Clearances Between Wires 677.5 Overlashed Cables 678 Principles of Wire Sag 718.1 Catenary 718.2 Initial and Final Sag 728.3 Sag–Tension Relationship 728.4 Determining Change in Sag (and Tension) 738.5 Ruling Span 768.6 Point Load 779 General Order 95 (California) 819.1 General Order 95 (GO 95) 819.2 Loading Requirements 819.3 Strength Requirements 839.4 Clearances 8410 Examples 8510.1 Purpose 8510.2 Tangent Line 8510.3 Line Angle 8810.4 Line Angle – Buckling Consideration 9010.5 Additional Attachment 9410.6 Summary 96Appendix A Properties of Messenger Strands 99Appendix B Wireless Attachments 101Appendix C Extreme Wind and Extreme Ice Loadings 103Appendix D Solution of Cubic Equation 107Appendix E Point Load 109E.1 Parabolic Model 109E.2 Intersecting Straight Lines Model 111Glossary 115References 121Index 123