EN 60811-403-2012 en Electric and optical fibre cables - Test methods for non-metallic materials - Part 403 Miscellaneous tests - Ozone resistance test on cross-linked compounds.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationElectric and optical fibre cables Test methods for non-metallic materialsPart 403: Miscellaneous tests Ozone resistance test on cross-linked compoundsBS EN 60811-403:2012National

2、 forewordThis British Standard is the UK implementation of EN 60811-403:2012. It isidentical to IEC 60811-403:2012. In the UK, the relationship between the supersessions of BS EN 60811 seriescan be summarized as follows.Superseded standards are withdrawnThe UK participation in its preparation was en

3、trusted by Technical CommitteeGEL/20, Electric cables, to Subcommittee GEL/20/17, Electric Cables - Lowvoltage.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. User

4、s are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 65313 1ICS 29.035.01; 29.060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the auth

5、ority of the StandardsPolicy and Strategy Committee on 31 July 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60811-403:2012BS EN 60811-100 together with Supersedes - -201, -202, -203, -501 BS EN 60811-1-1:1995 -301, -302, -411, -601, -602, -603, -604 BS EN

6、60811-5-1:2000 -401, -412 BS EN 60811-1-2:1995 -402, -502, -503, -606 BS EN 60811-1-3:1995 -403, -404, -507 BS EN 60811-2-1:1998 -405, -409 BS EN 60811-3-2:1995 -406, -511, -605, -607 BS EN 60811-4-1:2004 -407, -408, -410, -510, -512, -513 BS EN 60811-4-2:2004 -504, -505, -506 BS EN 60811-1-4:1995 -

7、508, -509 BS EN 60811-3-1:1995EUROPEAN STANDARD EN 60811-403 NORME EUROPENNE EUROPISCHE NORM June 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17,

8、 B - 1000 Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60811-403:2012 E ICS 29.035.01; 29.060.20 Supersedes EN 60811-2-1:1998 (partially) + A1:2001 (partially)English version Electric and optical fibre cables - Te

9、st methods for non-metallic materials - Part 403: Miscellaneous tests - Ozone resistance test on cross-linked compounds (IEC 60811-403:2012) Cbles lectriques et fibres optiques - Mthodes dessai pour les matriaux non-mtalliques - Partie 403: Essais divers - Essai de rsistance lozone sur les mlanges r

10、ticuls (CEI 60811-403:2012) Kabel, isolierte Leitungen und Glasfaserkabel - Prfverfahren fr nichtmetallene Werkstoffe - Teil 403: Sonstige Prfungen - Prfung der Ozonbestndigkeit fr vernetzte Mischungen (IEC 60811-403:2012) This European Standard was approved by CENELEC on 2012-04-16. CENELEC members

11、 are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application

12、to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Ma

13、nagement Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxe

14、mbourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60811-403:2012EN 60811-403:2012 - 2 - Foreword The text of document 20/1287/FDIS, future edition 1 of IEC 60811-403, prepared by IEC/TC 20 “Electric

15、 cables“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60811-403:2012. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2013-01-16 latest da

16、te by which the national standards conflicting with the document have to be withdrawn (dow) 2015-04-16 This document supersedes Clause 8 of EN 60811-2-1:1998 + A1:2001 (partially). Full details of the replacements are shown in Annex A of EN 60811-100:2012. There are no technical changes with respect

17、 to EN 60811-2-1:1998 + A1:2001, but see the Foreword to EN 60811-100:2012. This standard is to be read in conjunction with EN 60811-100. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held respons

18、ible for identifying any or all such patent rights. This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC) Endorsement notice The text of the International Standard IEC 60811-403:2012 was approve

19、d by CENELEC as a European Standard without any modification. BS EN 60811-403:2012- 3 - EN 60811-403:2012 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in

20、 this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications,

21、indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60811-100 2012 Electric and optical fibre cables - Test methods for non-metallic materials - Part 100: General EN 60811-100 2012 IEC 60811-501 - Electric and optical fibre cables - Test methods for non-metallic mat

22、erials - Part 501: Mechanical tests - Tests for determining the mechanical properties of insulating and sheathing compounds EN 60811-501 - BS EN 60811-403:2012 2 60811-403 IEC:2012 CONTENTS INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Test method . 6 4.1 Gene

23、ral . 6 4.2 Apparatus 6 4.3 Pre-conditioning of the samples 7 4.4 Sampling and preparation of test pieces 7 4.4.1 Sampling of insulation . 7 4.4.2 Sampling of sheath 7 4.4.3 Preparation of test pieces from insulation 7 4.4.4 Preparation of test pieces from sheath 7 4.5 Conditioning and deformation p

24、rocedure of test pieces 7 4.5.1 Test pieces of insulation 7 4.5.2 Test pieces of sheath 8 4.6 Exposure to ozone 8 4.7 Evaluation of results 9 4.8 Determination of ozone concentration . 9 4.8.1 Chemical analysis 9 4.8.2 Direct measurement with an ozone meter 10 5 Test report 11 Bibliography 12 Table

25、1 Mandrel diameters. 8 BS EN 60811-403:201260811-403 IEC:2012 5 INTRODUCTION The IEC 60811 series specifies the test methods to be used for testing non-metallic materials of all types of cables. These test methods are intended to be referenced in standards for cable construction and for cable materi

26、als. 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 fundamental and have been developed and used over many years principally for the materials in all energy cables. They have al

27、so been widely accepted and used for other cables, in particular optical fibre cables, communication and control cables and cables for ships and offshore applications. BS EN 60811-403:2012 6 60811-403 IEC:2012 ELECTRIC AND OPTICAL FIBRE CABLES TEST METHODS FOR NON-METALLIC MATERIALS Part 403: Miscel

28、laneous tests Ozone resistance test on cross-linked compounds 1 Scope This Part 403 of IEC 60811 specifies the method for the ozone resistance test, which typically applies to cross-linked compounds. 2 Normative references The following documents, in whole or in part, are normatively referenced in t

29、his document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60811-100:2012, Electric and optical fibre cables Test methods for non-metallic

30、materials Part 100: General IEC 60811-501, Electric and optical fibre cables Test methods for non-metallic materials Part 501: Mechanical tests Tests for determining the mechanical properties of insulation and sheathing compounds3 Terms and definitions For the purposes of this document, the terms an

31、d 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 60811-100. WARNING Attention is drawn to the toxicity of ozone. Precautions should be taken to minimize exposure of personnel to it at all times and the concentration in

32、 the workroom environment should not be allowed to exceed 110-5% by volume, or the value in the current industrial hygienic standard, whichever is the lower. Unless otherwise specified, tests shall be carried out at room temperature. 4.2 Apparatus The following apparatus shall be used: a) a device f

33、or generating a controlled amount of ozone; b) a means for circulating ozonized air under controlled conditions of humidity and temperature through a chamber containing the test pieces to be tested; c) a means for determination of ozone concentration; d) a suitable device for the clamping and elonga

34、tion of test pieces; e) cylindrical mandrels consisting of wood or metal; BS EN 60811-403:201260811-403 IEC:2012 7 f) a desiccator filled with silica gel or equivalent material; g) an accurate laboratory balance reading to 0,1 mg. 4.3 Pre-conditioning of the samples All the tests shall be carried ou

35、t not less than 16 h after the extrusion or cross-linking, if any, of the insulating or sheathing compounds. If the test is carried out at ambient temperature, the test pieces shall be kept for at least 3 h at a temperature of (23 5) C. 4.4 Sampling and preparation of test pieces 4.4.1 Sampling of i

36、nsulation Whether the cable is single or multicore, only one core needs to be tested. Sufficient length of core shall be cut from a position not less than 1,5 m from the end of the length of cable to provide two test pieces, unless the core has an extruded semi-conductor layer on the outside, in whi

37、ch case sufficient length for four test pieces shall be taken. Any sample that shows signs of mechanical damage shall not be used for the tests. 4.4.2 Sampling of sheath One sample of the cable or cord to be tested, or of the sheath removed from the cable, shall be taken of sufficient size to provid

38、e a minimum of two test pieces. Any sample that shows signs of mechanical damage shall not be used for the tests. 4.4.3 Preparation of test pieces from insulation Any protective coverings present on the core shall be removed without damaging the insulation, unless they were applied directly to the i

39、nsulation prior to vulcanization and are adherent to it. If the core has a semi-conducting layer in the form of tape on the outside, this shall be removed. If the core has an extruded semi-conducting screen on the outside, this shall be removed from two test pieces and left in position on the other

40、two. 4.4.4 Preparation of test pieces from sheath Two dumb-bell test pieces shall be prepared in accordance with IEC 60811-501. The minimum test piece thickness shall be 0,6 mm. In the case of cables of such small size that it is not possible to prepare dumb-bell test pieces, the test method used sh

41、all be that specified for insulation. 4.5 Conditioning and deformation procedure of test pieces 4.5.1 Test pieces of insulation If the core does not have an extruded semi-conducting screen, one test piece shall be bent in the direction and plane of its existing curvature, without twisting, for one c

42、omplete turn around a mandrel, and bound with twine or tape where the ends cross, and a second test piece of the same core shall be bent similarly in the plane of its existing curvature but in the opposite direction. BS EN 60811-403:2012 8 60811-403 IEC:2012 If the core as manufactured has an extrud

43、ed core screen on the outside, two test pieces, one with the semi-conducting layer removed and one with the semi-conducting layer left in position, shall be bent, as above, in each direction. The bending shall be carried out at temperature 20 C to 28 C using a brass, aluminium or suitably treated wo

44、oden mandrel with a diameter according to Table 1. Table 1 Mandrel diameters Outside diameter of insulated core d Mandrel diameter (as a multiple of the outside diameter of insulated core) mm d 12,5 12,5 d 20 20 d 30 30 d 45 45 d 4 0,1 5 0,1 6 0,1 8 0,1 10 0,1 If the test piece is too rigid to permi

45、t the ends to be crossed, it shall be bent and tied so that at least 180 bend round a mandrel of the specified diameter is obtained. The surface of each test piece shall be wiped with a clean cloth to remove dirt or moisture. The bent test pieces on their mandrels shall be kept in air at ambient tem

46、perature without any further treatment for 30 min to 45 min before being tested. 4.5.2 Test pieces of sheath The surface of each test piece shall be wiped with a clean cloth to remove dirt or moisture. The test piece shall then be stored in the desiccator for at least 16 h at (23 5) C. Clamp both en

47、ds of the test piece in the clamping device, and elongate it by (33 2) % and keep the test piece elongated in the clamping device. NOTE To avoid possible ozone cracks near the clamps, the test pieces may be covered locally by a suitable ozone resistance lacquer. 4.6 Exposure to ozone The conditioned

48、 test pieces prepared as in 4.4 shall be placed in the middle of the test chamber fitted with a test cock; the test pieces shall be at least 20 mm from each other. The test pieces shall be maintained at a temperature of (25 2) C, unless otherwise specified in the cable standard, and exposed to a cir

49、culating current of dry air with the required ozone concentration. The ozone concentration and the exposure time shall be as specified in the relevant cable standard. The ozone concentration shall be measured inside of the test chamber in accordance with 4.8. The air with the required ozone concentration shall have a flow rate of between 280 l/h and 560 l/h, and the air pressure shall be maintained slightly above atmospheric pressure. BS EN 60811-403:201260811-403