1、BRITISH STANDARD C omrnunicat ion cables - Specifications for test methods - Part 3-4: Mechanical test methods - Tensile strength, elongation and shrinkage of insulation and sheath The European Standard EN 50289-3-4:2001 has the status of a British Standard ICs 33.120.10 BS EN 50 289-3-4:200 1 NO CO
2、PYING WITHOUT BSi PERMISSION EXCEP AS PERMIITED BY COPYRIGHT LAW COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling ServicesBS EN 50289-3-4:2001 National foreword This British Standard is the official English language version of EN 50289-3-4:2001. The U
3、K participation in its preparation was entrusted by Technical Committee EPL46, Cables, wire and waveguides, RF connectors, and accessories for communication and signalling, to Subcommittee EPL/46/1, Communication cables, which has the responsibility to: - - aid enquirers to understand the text; pres
4、ent to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this subcommittee can be obtaine
5、d on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” faci
6、lity of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obliga
7、tions. This British Standard, having been prepared tinder the direction of the Electrotechnical sector Policy and St,rategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 13 November 2001 Summary of pages This document comprises a front cover, an insid
8、e front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication b O BSI 13 November 2001 ISBN O 580 38686 4 COPYRIGHT European Committee for Elect
9、rotechnical StandardizationLicensed by Information Handling ServicesEUROPEAN STANDARD EN 50289-3-4 NORME EUROPENNE EUROPISCHE NORM August 2001 ICs 33.120.10 English version Communication cables - Specifications for test methods Part 3-4: Mechanical test methods - Tensile strength, elongation and shr
10、inkage of insulation and sheath Cbles de communication - Kommunikationskabel- Spcifications des mthodes dessai Partie 3-4: Mthodes dessais mcaniques - Rsistance la traction, allongement et rtraction de lisolant et de la gaine Spezifikationen fr Prfverfahren Teil 3-4: Mechanische Prfverfahren - Schru
11、mpf der Isolierung This European Standard was approved by CENELEC on 2001-03-01. CENELEC members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists an
12、d bibliographical references concerning such national standards may be obtained on application to the Central Secretariat 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 respon
13、sibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Ital
14、y, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stascart 35, B - 1
15、050 Brussels O 2001 CENELEC - All rights of exploitation in anyform and by any means reserved worldwide for CENELEC members. Ref. NO. EN 50289-342001 E COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling ServicesEN 50289-3-4:2001 -2- Foreword This Europe
16、an Standard was prepared by the Technical Committee CENELEC TC 46X, Communication cables. The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50289-3-4 on 2001 -03-01. The following dates were fixed: - latest date by which the EN has to be implemented at national
17、 level by publication of an identical national standard or by endorsement (dop) 2002-04-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2004-04-01 This European Standard has been prepared under the European Mandate M/212 given to CENELEC by the Eur
18、opean Commission and the European Free Trade Association. COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling Services-3- EN 50289-3-4:2001 Contents 1 2 3 4 5 6 7 8 9 10 11 Scope . 4 Normative references . 4 Definitions . 4 Test values . 4 Applicability
19、. 4 Pre-conditioning 4 Test temperature 5 Elongation . 5 Tensile strength . 5 Shrinkage . 5 10.1 Sampling . 5 70.7.7 Sample length . 5 7a7.2 Preparation of test pieces 5 10.2 Procedure 5 10.3 Expression of results . 5 Test report . 6 COPYRIGHT European Committee for Electrotechnical StandardizationL
20、icensed by Information Handling ServicesEN 50289-3-4:2001 -4- 1 Scope This Part 3-4 of EN 50289 details the method of test to determine the tensile strength, elongation and shrinkage of insulation and sheath of cables used in analogue and digital communication systems. It is to be read in conjunctio
21、n with Part 3-1 of EN 50289, which contains essential provisions for its application. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publi
22、cations are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including am
23、endments). EN 50289-3-1 2001 Communication cables - Specifications for test methods - Part 3-1: Mechanical test methods - General requirements EN 50290-1-2 Communication cables - Part 1-2: Definitions EN 6081 1-1-1 1995 Insulating and sheathing materials of electric and optical cables - Common test
24、methods - Part 1-1: General application - Measurement of thickness and overall dimensions - Tests for determining the mechanical properties 3 Definitions For the purposes of this European Standard the definitions of EN 50290-1-2 apply. 4 Test values Full test conditions (such as temperature, duratio
25、n, etc.) and full test requirements are not specified in this standard: it is intended that they should be specified by the standard dealing with the relevant type of material. 5 Applicability Conditioning values and testing parameters are specified for the most common types of insulating compounds.
26、 6 P re-con d it i on ing The test shall be carried out not less than 16 h after the extrusion or cross linking of the insulation com pound. 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 “C f 5 “C. ) At draft stage. COPYRIGHT
27、 European Committee for Electrotechnical StandardizationLicensed by Information Handling Services-5- 7 Test temperature EN 50289-3-4:2001 Unless otherwise specified, the test shall be carried out at ambient temperature. 8 Elongation Elongation tests shall be performed in accordance with clause 9 of
28、EN 60811-1-1 9 Tensile strength Tensile strength tests shall be performed in accordance with clause 9 of EN 6081 1-1-1. IO Shrinkage 10.1 Sampling 10.1.1 Sample length One sample about 1,5 L in length of each core to be tested shall be taken at least 0,5 m away from each end of the cable length. L i
29、s the length given in the relevant cable standard. 10.1.2 Preparation of test pieces Within an interval of not more than 5 min from the time of cutting the samples, a test length of L f 5 mm shall be marked on the middle part of each piece of core. The distance between the marks shall be measured to
30、 an accuracy of 0,5 mm. Each test piece shall then be prepared by cutting and removing the insulation from both ends of each sample up to positions between 2 mm and 5 mm away from the marks. 10.2 Procedure The test pieces shall be supported horizontally in an air oven by the bare ends of conductors
31、or on the surface of a talc bath, to permit free movement of the insulation. They shall be heated at the temperature and for the time specified in the standard for the type of cable. The test pieces shall then be allowed to cool in air to room temperature and the distance between the two marks on ea
32、ch piece measured again to the nearest 0,5 mm. 10.3 Expression of results The difference between the marks before the heat treatment and after the heating and cooling shall be recorded as a percentage of the distance between the marks before the treatment. COPYRIGHT European Committee for Electrotec
33、hnical StandardizationLicensed by Information Handling ServicesEN 50289-3-4:2001 11 Test report The test report shall include: - temperature, - sample length, - shrinkage - elongation, - tensile strength. -6- COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Ha
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