BS EN 50289-3-2-2001 Communication cables Specifications for test methods Mechanical test methods Tensile strength and elongation for conductor《通信电缆 试验方法规范 机械试验方法 导体抗拉强度和弹性》.pdf

1、BRITISH STANDARD BS EN 50289-3-2:2001 Communication cables Specifications for test methods Part 3-2: Mechanical test methods Tensile strength and elongation for conductor The European Standard EN 50289-3-2:2001 has the status of a British Standard ICS 33.120.10 NO COPYING WITHOUT BSI PERMISSION EXCE

2、PT AS PERMITTED BY COPYRIGHT LAWBS EN 50289-3-2:2001 This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 14 November 2001 BSI 14 November 2001

3、 ISBN 0 580 38687 2 National foreword This British Standard is the official English language version of EN 50289-3-2:2001. The UK participation in its preparation was entrusted by Technical Committee EPL/46, Cables, wire and waveguides, RF connectors, and accessories for communication and signalling

4、, to Subcommittee EPL/46/1, Communication cables, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this d

5、ocument may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users o

6、f British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for c

7、hange, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 5 and a back cover. The BSI copyright date displayed in this

8、document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 50289-3-2 NORME EUROPENNE EUROPISCHE NORM August 2001 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique E

9、uropisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50289-3-2:2001 E ICS 33.120.10 English version Communication cables -

10、Specifications for test methods Part 3-2: Mechanical test methods - Tensile strength and elongation for conductor Cbles de communication - Spcification des mthodes dessais Partie 3-2: Mthodes dessais mcaniques - Rsistance la traction et allongement des conducteurs Kommunikationskabel - Spezifikation

11、en fr Prfverfahren Teil 3-2: Mechanische Prfverfahren - Zugfestigkeit und Dehnung fr Leiter This European Standard was approved by CENELEC on 2001-07-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the

12、 status of a national standard without any alteration. Up-to-date lists and 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, Ger

13、man). A version in any other language made by translation under the responsibility 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 R

14、epublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EN 50289-3-2:2001 - 2 - Foreword This European Standard was prepared by the Technical Committee CENELEC TC 46X, Communication cables.

15、The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50289-3-2 on 2001-07-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (do

16、p) 2002-08-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2004-08-01 This European Standard has been prepared under the European Mandate M212 given to CENELEC by the European Commission and the European Free Trade Association.- 3 - EN 50289-3-2:2001

17、 Contents 1 Scope.4 2 Normative references.4 3 Definitions .4 4 Test method.4 4.1 Tensile strength and elongation after break for metals4 4.1.1 Principle.4 4.1.2 Procedure 4 4.2 Tensile strength and elongation at break for metals .5 4.2.1 Principle.5 4.2.2 Test equipment.5 4.2.3 Procedure 5 4.2.4 Ex

18、pression of results.5 5 Test report.5EN 50289-3-2:2001 - 4 - 1 Scope This Part 3-2 of EN 50289 details the methods of test to determine the tensile strength and elongation of conductors of cables used in analogue and digital communication systems. It is to be read in conjunction with Part 3-1 of EN

19、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 publications are listed her

20、eafter. 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 amendments). EN 50289-3-

21、1 2001 Communication cables - Specifications for test methods - Part 3-1: Mechanical test methods - General requirements EN 50290-1-2 1) Communication cables - Part 1-2: Definitions ISO/R402 Tensile testing of copper and copper alloy wire 3 Definitions For the purposes of this European Standard the

22、definitions of EN 50290-1-2 apply. 4 Test method 4.1 Tensile strength and elongation after break for metals. 4.1.1 Principle The test determines the maximum load and the plastic extension of the solid conductor with high elongation. (e.g. aluminium, copper) 4.1.2 Procedure At least five test specime

23、ns shall be tested in accordance with the method specified in ISO/R 402 with a rate of separation of the jaws of 100 mm 20 mm/min.1)At draft stage.- 5 - EN 50289-3-2:2001 4.2 Tensile strength and elongation at break for metals 4.2.1 Principle The test determines the percentage elongation at the time

24、 of break of a solid conductor with low elongation of about 1% (e.g. steel). 4.2.2 Test equipment An extensometer or other device suitable for measuring elongation of a gauge length of 250 mm shall be used. The equipment shall have a resolution not worse than 0,25 mm. 4.2.3 Procedure At least five t

25、est specimens shall tested. Each of them shall successively be fitted in the jaws of the testing machine and loaded to 10 percent of the minimum specified breaking load. An extensometer or other suitable device shall be attached to the test specimen to measure the extension. The elongation versus th

26、e load shall be observed while applying a tensile load to the specimen. The reading of elongation and tensile load at break shall be recorded. The rate of separation of the jaws shall not be greater than 100 mm 20 mm/min. Tests in which the fracture occurs within 25 mm apart from the jaws or extenso

27、meter clamps shall be disregarded and a repeat test shall be carried out 4.2.4 Expression of results The elongation at break shall be expressed as a percentage of the original sample length. Tensile load shall be expressed in N/mm. 5 Test report The test report shall include: - temperature, - sample

28、 length, - elongation of each of the specimens, - breaking load for each of the specimens.BS EN 50289-3-2:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on stand

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