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    IEC TR 61328-2017 Live working - Guidelines for the installation of transmission and distribution line conductors and earth wires - Stringing equipment and acce.pdf

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    IEC TR 61328-2017 Live working - Guidelines for the installation of transmission and distribution line conductors and earth wires - Stringing equipment and acce.pdf

    1、 IEC TR 61328 Edition 3.0 2017-04 TECHNICAL REPORT Live working Guidelines for the installation of transmission and distribution line conductors and earth wires Stringing equipment and accessory items IEC TR 61328:2017-04(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC,

    2、Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IECs member National Committee

    3、in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. IEC Central Office Tel.: +41 22 919 02 11 3,

    4、rue de Varemb Fax: +41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. Ab

    5、out IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. IEC Catalogue - webstore.iec.ch/catalogue The stand-alone application for consulting the

    6、 entire bibliographical information on IEC International Standards, Technical Specifications, Technical Reports and other documents. Available for PC, Mac OS, Android Tablets and iPad. IEC publications search - www.iec.ch/searchpub The advanced search enables to find IEC publications by a variety of

    7、 criteria (reference number, text, technical committee,). It also gives information on projects, replaced and withdrawn publications. IEC Just Published - webstore.iec.ch/justpublished Stay up to date on all new IEC publications. Just Published details all new publications released. Available online

    8、 and also once a month by email. Electropedia - www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing 20 000 terms and definitions in English and French, with equivalent terms in 16 additional languages. Also known as the International Electrotechnic

    9、al Vocabulary (IEV) online. IEC Glossary - std.iec.ch/glossary 65 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002. Some entries have been collected from earlier publications of IEC TC 37, 77, 86 and

    10、CISPR. IEC Customer Service Centre - webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. IEC TR 61328 Edition 3.0 2017-04 TECHNICAL REPORT Live working Guidelines for the installation of trans

    11、mission and distribution line conductors and earth wires Stringing equipment and accessory items INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 13.260; 29.240.20; 29.260.99 ISBN 978-2-8322-4130-1 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtaine

    12、d this publication from an authorized distributor. colour inside 2 IEC TR 61328:2017 IEC 2017 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 7 4 Understanding the hazard Basic theory 17 4.1 General . 17 4.2 Electric field induction from nearby circu

    13、its . 17 4.2.1 Overview . 17 4.2.2 Induced voltage . 18 4.2.3 Induced current 19 4.2.4 Electrostatic charging 20 4.3 Magnetic field induction from nearby circuits . 20 4.3.1 Induced current 20 4.3.2 Induced voltage . 21 4.4 Re-energization 22 4.5 Mechanical risk . 22 5 Conductor stringing methods an

    14、d equipment . 23 5.1 General . 23 5.2 Slack stringing method 23 5.3 Tension stringing method 25 5.4 Stringing equipment 34 5.4.1 General 34 5.4.2 Tensioners . 34 5.4.3 Pullers . 37 5.4.4 Reel winders 41 5.4.5 Reel stands . 42 5.4.6 Pilot rope puller . 43 5.4.7 Pilot rope, pulling rope . 43 5.4.8 Wov

    15、en wire grip . 44 5.4.9 Stringing blocks . 44 5.4.10 Stringing rollers . 47 5.4.11 Stringing block earth 48 5.4.12 Running earth 49 5.4.13 Hold-down block 49 5.4.14 Conductor car 49 5.5 Communications . 53 6 Special earthing requirements . 53 6.1 General . 53 6.2 Work site earthing systems . 54 6.2.

    16、1 Overview . 54 6.2.2 Use of earth rods . 55 6.2.3 Equipment earths . 56 6.2.4 Earths for conductor, earth wire, metallic and synthetic rope 56 6.2.5 Earths for earth mat, conductors or earth wires 56 6.2.6 Earths for mid-span joining of conductors or earth wires 56 IEC TR 61328:2017 IEC 2017 3 6.2.

    17、7 Earths for clipping in the conductors or earth wires 57 6.2.8 Earths for installation of jumper loops for the conductor . 57 6.2.9 Stringing block earths 57 6.2.10 Earth mat . 57 6.3 General procedures and use of earthing systems 62 6.3.1 Overview . 62 6.3.2 General procedures . 62 6.3.3 Installat

    18、ion of the pilot or pulling rope 63 6.3.4 Stringing of conductors 64 6.3.5 Splicing of conductors 65 6.3.6 Sagging of conductors . 66 6.3.7 Clipping-in conductors . 67 6.3.8 Dead-ending and installation of jumper loops . 67 6.3.9 Spacing . 68 6.3.10 Special work on conductors . 68 6.3.11 Fuelling 69

    19、 7 Testing of earthing devices 69 7.1 General . 69 7.2 Number of type tests . 70 7.3 Type test set-up 70 7.4 Type test acceptance criterion 70 Bibliography 73 Figure 1 Electric field induction from nearby circuits Induced voltage 18 Figure 2 Electric field induction from nearby circuits Induced curr

    20、ent 19 Figure 3 Magnetic field induction from nearby circuits Induced current 21 Figure 4 Magnetic field induction from nearby circuits Induced voltage . 22 Figure 5 Slack stringing method . 25 Figure 6 Tension stringing method . 33 Figure 7 Bullwheel tensioners 37 Figure 8 Bullwheel pullers 41 Figu

    21、re 9 Stringing blocks . 47 Figure 10 Stringing rollers 48 Figure 11 Conductor cars . 50 Figure 12 Earthing systems 62 Figure 13 Typical test set-up for stringing block earth 71 Figure 14 Typical test set-up for running earth . 72 4 IEC TR 61328:2017 IEC 2017 INTERNATIONAL ELECTROTECHNICAL COMMISSION

    22、 _ LIVE WORKING GUIDELINES FOR THE INSTALLATION OF TRANSMISSION AND DISTRIBUTION LINE CONDUCTORS AND EARTH WIRES STRINGING EQUIPMENT AND ACCESSORY ITEMS FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotech

    23、nical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications

    24、, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, go

    25、vernmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisio

    26、ns or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for internat

    27、ional use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order

    28、 to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clear

    29、ly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bo

    30、dies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, proper

    31、ty damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in th

    32、is publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any o

    33、r all such patent rights. The main task of IEC technical committees is to prepare International Standards. However, a technical committee may propose the publication of a Technical Report when it has collected data of a different kind from that which is normally published as an International Standar

    34、d, for example “state of the art“. IEC TR 61328, which is a Technical Report, has been prepared by IEC technical committee 78: Live working. This third edition cancels and replaces the second edition published in 2003 and IEC TR 61911:2003. It incorporates some technical changes to update equipment

    35、work methods and procedures, bringing them in line with the state of the art. The text of this Technical Report is based on the following documents: Enquiry draft Report on voting 78/1145/DTR 78/1174/RVDTR IEC TR 61328:2017 IEC 2017 5 Full information on the voting for the approval of this Technical

    36、 Report can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. Terms defined in Clause 3 are given in italic print throughout this standard. The committee has decided that the contents of this publicatio

    37、n will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publicatio

    38、n may be issued at a later date. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 6 IEC TR 6132

    39、8:2017 IEC 2017 INTRODUCTION With the increased difficulty of de-energizing existing overhead lines, installing conductors or earth wire in circuits nearby, or crossing these existing circuits, creates hazards requiring special considerations particularly with regard to earthing and bonding. It is a

    40、lso important to provide protections against induced static charge due to atmospheric conditions, lightning strikes, or accidental energization. These potential electrical hazards demand that certain requirements be observed when choosing equipment and work methods for the protection of personnel or

    41、 equipment. IEC TR 61328:2017 IEC 2017 7 LIVE WORKING GUIDELINES FOR THE INSTALLATION OF TRANSMISSION AND DISTRIBUTION LINE CONDUCTORS AND EARTH WIRES STRINGING EQUIPMENT AND ACCESSORY ITEMS 1 Scope This document, which is a Technical Report, provides recommendations for the selection and testing wh

    42、ere necessary of conductor stringing equipment and accessory items used for the installation of bare and insulated overhead distribution conductors, bare overhead transmission conductors and overhead earth wires. Procedures are recommended for proper earthing in order to protect equipment, component

    43、s and personnel from currents which can result from accidental contact with nearby energized conductors or from the induced or fault currents which can result in some circumstances. The items of equipment under consideration in this document are used for transmission and distribution systems. 2 Norm

    44、ative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any a

    45、mendments) applies. IEC 60050-466, International Electrotechnical Vocabulary Chapter 466: Overhead lines (available at www.electropedia.org) IEC 60050-651, International Electrotechnical Vocabulary Part 651: Live working (available at www.electropedia.org) IEC 60743, Live working Terminology for too

    46、ls, devices and equipment 3 Terms and definitions NOTE Terminology for equipment and procedures associated with the installation of overhead conductors and earth wires varies widely throughout the utility industry. For the purposes of this document, the terms and definitions given in IEC 60050-466,

    47、IEC 60050-651, IEC 60743 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 8 IEC TR 61328:2017 IEC 2

    48、017 3.1 anchor anchor log deadman sledge snub device that serves as a reliable support to hold an object firmly in place 3.2 basket bucket device designed to be attached to the boom tip of a line truck, crane or aerial lift to support workmen in an elevated working position 3.3 birdcaging opening up

    49、 of the outer layers of a conductor to form a bulge in the conductor 3.4 block tackle pulley device designed with one or more sheaves, a synthetic plastic or metal shell, and an attachment hook or shackle 3.5 bond equipotential connection connection electrical connection used to bring all personnel and objects in the work area to the same potential 3.6 bullwheel wheel or wheels incorporated as an integral part of a puller or tensioner with multiple o


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