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)colourinside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC,Gen
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12、 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 circuits.17 4.2.1 Overview.17 4.2.2 Induced voltage.18 4.2.3 Induced current.
13、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 and equipment.23 5.1 General.23 5.2 Slack stringing method.23 5.3 Tension stringing me
14、thod.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 Woven wire grip.44 5.4.9 Stringing blocks.44 5.4.10 Stringing rollers.47 5.4.11 Stringing block earth.
15、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 6.2.1 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
16、 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 6.2.7 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 Installation of the pilot or pulling ro