1、 IEC 60811-512 Edition 1.0 2012-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Electric and optical fibre cables Test methods for non-metallic materials Part 512: Mechanical tests Methods specific to polyethylene and polypropylene compounds Tensile strength and elongation at break after conditioning
2、 at elevated temperature Cbles lectriques et fibres optiques Mthodes dessai pour les matriaux non-mtalliques Partie 512: Essais mcaniques Mthodes spcifiques pour les mlanges polythylne et polypropylne Rsistance la traction et allongement la rupture aprs conditionnement temprature leve IEC60811-512:2
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17、DARD NORME INTERNATIONALE Electric and optical fibre cables Test methods for non-metallic materials Part 512: Mechanical tests Methods specific to polyethylene and polypropylene compounds Tensile strength and elongation at break after conditioning at elevated temperature Cbles lectriques et fibres o
18、ptiques Mthodes dessai pour les matriaux non-mtalliques Partie 512: Essais mcaniques Mthodes spcifiques pour les mlanges polythylne et polypropylne Rsistance la traction et allongement la rupture aprs conditionnement temprature leve INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQ
19、UE INTERNATIONALE H ICS 29.035.01; 29.060.20 PRICE CODE CODE PRIX ISBN 978-2-88912-990-4 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distri
20、butor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 60811-512 IEC:2012 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Test method . 6 4.1 General . 6 4.2 Conditioning procedure . 7 4.3
21、Tensile strength and elongation tests after conditioning at elevated temperature . 7 4.4 Expression of results . 7 5 Test report 7 Bibliography 8 60811-512 IEC:2012 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRIC AND OPTICAL FIBRE CABLES TEST METHODS FOR NON-METALLIC MATERIALS Part 512: Mecha
22、nical tests Methods specific to polyethylene and polypropylene compounds Tensile strength and elongation at break after conditioning at elevated temperature FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electro
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31、perty 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
32、 this 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 an
33、y or all such patent rights. International Standard IEC 60811-512 has been prepared by IEC technical committee 20: Electric cables. This Part 512 of IEC 60811 cancels and replaces Clause 8 of IEC 60811-4-2:2004, which is withdrawn. Full details of the replacements are shown in Annex A of IEC 60811-1
34、00:2012. There are no specific technical changes with respect to the previous edition, but see the Foreword to IEC 60811-100:2012. 4 60811-512 IEC:2012 The text of this standard is based on the following documents: FDIS Report on voting 20/1308/FDIS 20/1357/RVD Full information on the voting for the
35、 approval of this standard 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. This part of IEC 60811 shall be used in conjunction with IEC 60811-100. A list of all the parts in the IEC 60811 series,
36、published under the general title Electric and optical fibre cables Test methods for non-metallic materials, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webs
37、tore.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. 60811-512 IEC:2012 5 INTRODUCTION The IEC 60811 series specifies the test methods to be used for testing non-metallic materials of al
38、l types of cables. These test methods are intended to be referenced in standards for cable construction and for cable materials. NOTE 1 Non-metallic materials are typically used for insulating, sheathing, bedding, filling or taping within cables. NOTE 2 These test methods are accepted as basic and f
39、undamental and have been developed and used over many years principally for the materials in all energy cables. They have also been widely accepted and used for other cables, in particular optical fibre cables, communication and control cables and cables for ships and offshore applications. 6 60811-
40、512 IEC:2012 ELECTRIC AND OPTICAL FIBRE CABLES TEST METHODS FOR NON-METALLIC MATERIALS Part 512: Mechanical tests Methods specific to polyethylene and polypropylene compounds Tensile strength and elongation at break after conditioning at elevated temperature 1 Scope This Part 512 of IEC 60811 descri
41、bes the procedure for testing tensile strength and elongation at break after conditioning at elevated temperature. It is specific to polyethylene and polypropylene compounds. This test is intended for samples from filled cables, of polyolefin insulations with a wall thickness of more than 0,8 mm and
42、 for polyolefin sheaths in direct contact with filling compound. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, t
43、he latest edition of the referenced document (including any amendments) applies. IEC 60811-100:2012, Electric and optical fibre cables Test methods for non-metallic materials Part 100: General IEC 60811-501, Electric and optical fibre cables Test methods for non-metallic materials Part 501: Mechanic
44、al tests Tests for determining the mechanical properties of insulating and sheathing compounds 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60811-100 apply. 4 Test method 4.1 General This part of IEC 60811 shall be used in conjunction with IEC 608
45、11-100. For multicore cables not more than three cores (of different colours, if any) shall be tested unless otherwise specified in the relevant cable standard. All the tests shall be carried out not less than 16 h after the extrusion or cross-linking, if any, of the compounds used for insulating or
46、 sheathing. 60811-512 IEC:2012 7 4.2 Conditioning procedure A sample of complete cable of sufficient length shall be conditioned in air (i.e. suspended in an oven). The duration of the test and temperature of the air maintained continuously shall be as follows: 7 24 h at (60 2) C for filling compoun
47、d having a nominal drop point above 50 C and up to and including 70 C; 7 24 h at (70 2) C for filling compound having a nominal drop point above 70 C. NOTE For an explanation of the drop point, see IEC 60811-601. After conditioning, the cable sample shall be left at ambient temperature for at least
48、16 h without being exposed to direct sunlight. The sheath and cores to be tested shall then be taken from the cable and shall be cleaned by suitable means. 4.3 Tensile strength and elongation tests after conditioning at elevated temperature Tensile strength and/or elongation tests, with respect to r
49、equirements in the cable standard, shall be performed on test pieces according to 4.2 in accordance with IEC 60811-501 without any further ageing treatment. 4.4 Expression of results The median of the values of tensile strength and/or elongation at break shall be recorded as the tensile strength and/or elongation at break. 5 Test report T
