BS EN IEC 60794-4:2018 – TC:2020 Edition
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Tracked Changes. Optical fibre cables – Sectional specification. Aerial optical cables along electrical power lines
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 64 |
IEC 60794-4:2018 is available as /2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60794-4:2018 covers cable construction, test methods, optical, mechanical, environmental and electrical performance requirements for aerial optical fibre cables and cable elements which are intended to be used along power lines (OCEPL) as a high bandwidth transport media for communications and control optical signals, including optical ground wires (OPGW), optical phase conductors (OPPC), metallic aerial self-supported cables (MASS), all-dielectric self-supporting cables (ADSS) and optical attached cables (OPAC). This document excludes figure-8 optical cables to be used on telephone utility poles. The IEC TR 62839-1 gives recommendations to provide the customer with the environmental declaration on request. This second edition cancels and replaces the first edition published in 2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the specification has been streamlined by cross-referencing IEC 60794-1-1; b) the classification as type tests or routine tests has been deleted; c) cable kink test has been deleted; d) creep test for ADSS is referred to IEC 60794-4-20. Keywords: aerial optical fibre cables
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 36 | undefined |
| 39 | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications |
| 43 | English CONTENTS |
| 45 | FOREWORD |
| 47 | 1 Scope 2 Normative references |
| 49 | 3 Terms, definitions, symbols and abbreviated terms 4 Optical fibre 4.1 General 4.2 Attenuation 4.2.1 Attenuation coefficient 4.2.2 Attenuation uniformity-attenuation discontinuities 4.3 Cut-off wavelength of cabled fibre 4.4 Fibre colouring 4.5 Polarization mode dispersion (PMD) 5 Cable element 5.1 General |
| 50 | 5.2 Slotted core 5.3 Polymeric tube |
| 51 | 5.4 Ribbon 5.5 Metallic tube 5.5.1 General 5.5.2 Metallic tube on the optical core 5.5.3 Fibres directly located in a metallic tube 6 Optical fibre cable construction 6.1 General |
| 52 | 6.2 Lay-up of the cable elements 6.3 Cable core filling 6.4 Strength members 6.4.1 General 6.4.2 OPGW, OPPC and MASS |
| 53 | 6.4.3 ADSS and OPAC 6.5 Cable sheath (ADSS and OPAC) 6.5.1 Inner sheath 6.5.2 Outer sheath |
| 54 | 6.6 Sheath marking 7 Characterization of cable elements Table 1 – Characteristics of different types of cable elements |
| 55 | 8 Design characteristics 9 Optical fibre cable tests 9.1 General Table 2 – Design characteristics |
| 56 | Table 3 – Mechanical and environmental applicable tests |
| 57 | 9.2 Tensile performance 9.3 Stress-strain test on metallic cables 9.4 Sheave test 9.5 Short-circuit 9.6 Lightning test 9.7 Ageing |
| 58 | 9.8 Fibre coating compatibility 9.9 Hydrogen gas 9.10 Aeolian vibration 9.11 Creep 9.12 Fitting compatibility 9.13 Grease 9.14 Attenuation 9.15 Tracking and erosion resistance test on ADSS and OPAC 9.16 UV resistance test on ADSS and OPAC |
| 59 | 9.17 Shotgun resistance test on ADSS and OPAC 9.18 Conductor access trolley for OPAC 10 Quality assurance 11 Packaging |
| 60 | Annex A (normative) Recommended methods of calculating rated tensile strength,cross-section of a layer of trapezoidal shaped wires, modulus of elasticity, linear expansion and DC resistancefor OPGW, OPPC and MASS A.1 Calculation of rated tensile strength (RTS) A.2 Calculation of the cross-sectional area of a layer of trapezoidal or Z- shaped wires A.3 Calculation of the final modulus of elasticity (E) |
| 61 | A.4 Calculation of coefficient of linear expansion (() A.5 Calculation of DC resistance |
| 62 | Bibliography |
