BS EN 50289-3-6-2001 Communication cables - Specifications for test methods - Mechanical test methods - Impact resistance of the cable《通信电缆 试验方法规范 机械试验方法 电缆抗冲击性》.pdf

1、BRITISH STANDARD BS EN 50289-3-6:2001 Communication cables Specifications for test methods Part 3-6: Mechanical test methods Impact resistance of the cable The European Standard EN 50289-3-5:2001 has the status of a British Standard ICS 33.120.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED

2、 BY COPYRIGHT LAWBS EN 50289-3-6:2001 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 13 November 2001 BSI 13 November 2001 ISBN 0 580 386

3、89 9 National foreword This British Standard is the official English language version of EN 50289-3-6:2001. 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, to Subcommitt

4、ee 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 document may be

5、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 of British Stand

6、ards 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 change, and keep

7、 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 6, an inside back cover and a back cover. The BSI copyright date displayed i

8、n this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 50289-3-6 NORME EUROPENNE EUROPISCHE NORM August 2001 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotech

9、nique Europisches 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 50289-3-6:2001 E ICS 33.120.10 English version Communication ca

10、bles - Specifications for test methods Part 3-6: Mechanical test methods - Impact resistance of the cable Cbles de communication - Spcifications des mthodes dessai Partie 3-6: Mthodes dessais mcaniques - Rsistance aux impacts du cble Kommunikationskabel - Spezifikationen fr Prfverfahren Teil 3-6: Me

11、chanische Prfverfahren - Schlagbestndigkeit des Kabels This European Standard was approved by CENELEC on 2001-03-01. CENELEC members 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 withou

12、t 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, German). A version in any other language

13、 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 Republic, Denmark, Finland, France, Ge

14、rmany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EN 50289-3-6:2001 - 2 - Foreword This European Standard was prepared by the Technical Committee CENELEC TC 46X, Communication cables. The text of the draft was submitted t

15、o the Unique Acceptance Procedure and was approved by CENELEC as EN 50289-3-6 on 2001-03-01. 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 (dop) 2002-04-01 latest date by which th

16、e 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 European Commission and the European Free Trade Association.- 3 - EN 50289-3-6:2001 Contents 1 Scope 4 2 Normative refe

17、rences. 4 3 Definitions . 4 4 Test method. 4 4.1 Sample 4 4.1.1 Sample length. 4 4.1.2 Termination 4 4.2 Equipment 5 4.3 Procedure. 5 5 Test report . 5EN 50289-3-6:2001 - 4 - 1 Scope This Part 3-6 of EN 50289 details the method of test to determine the impact resistance of the cable used in analogue

18、 and digital communication systems. It is to be read in conjunction 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 refere

19、nces are cited at the appropriate places in the text and the publications 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 l

20、atest edition of the publication referred to applies (including amendments). EN 50289-3-1 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 3 Definitions For the purposes

21、 of this European Standard the definitions of EN 50290-1-2 apply. 4 Test method 4.1 Sample 4.1.1 Sample length The sample length shall be sufficient to carry out the specified test. When only physical damage is to be evaluated, the length may range from 1 m (for example for small diameter jumper cor

22、ds or duplex cables) to 5 m (for larger diameter cables). Longer lengths may be necessary to carry out electrical or optical transmission measurements. 4.1.2 Termination Unless otherwise specified in the relevant cable specification, the cable samples shall be terminated at each end in a connector,

23、or in a manner such that the fibres/conductors, sheathings and any strain members are clamped together in a representative manner. The clamps on the impact apparatus may be adequate, or the sample may be long enough that no restraint is needed.1)At draft stage.- 5 - EN 50289-3-6:2001 4.2 Equipment T

24、he apparatus shall allow an impact to be impacted to a cable sample which is fixed to a flat substantial steel base. When a single or only a few impacts are required, a suitable apparatus, as shown in Figure 1a, is used. This allows a weight to drop vertically onto a piece of steel which transmits t

25、he impact to the cable sample. When repeated impacts are required (say, more than five), a more practical apparatus as shown in Figure 1b, is used which allows multiple impacts by a drop hammer. In both cases, other equivalent apparatus may also be used. The striking surface contacting the sample sh

26、all be rounded, either as a hemisphere (Figure 1c, 3A) or a cylinder (Figure 1c, 3B). The radius R of the surface shall be specified in the detail specification. The apparatus shall include any test equipment needed to measure the changes in performance requested in the relevant cable specification.

27、 4.3 Procedure Unless otherwise specified, the conditions for testing shall be in accordance with EN 50289-3-1. If necessary, the sample shall be pre-conditioned at standard atmospheric conditions for 24 h. The mass of the weight or drop hammer and the height from which it falls shall be adjusted to

28、 give the value of impact energy shown in the detail specification. The number and rate of impacts and their location on the sample shall be as specified in the relevant cable specification. 5 Test report The test report shall include: - number of impacts; - impact energy; - test temperature; - radi

29、us of the striking surface; - frequency of multiple impacts (if any); - location of impacts on the sample; - tests to be performed; - temperature; - sample length; - pass/fail criteria, e.g.: - loss of optical continuity, - degradation of optical transmittance, - localised un-acceptable reflection (

30、or change in impedance), - degradation of return loss and crosstalk, - physical damage to the cable.EN 50289-3-6:2001 - 6 -Supports Guide Hammer Steel intermediate striking face Steel base Sample Figure 1a Apparatus for few impacts Arm Drive pin Sample Steel base Striking face Hammer Guide Free runn

31、ing pulley Figure 1b Apparatus for multiple impacts 3A Radius R 3B Radius R Figure 1c - Details of striking surface Figure 1 - Impact testblankBS EN 50289-3-6:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparin

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