BS EN 50289-4-2-2001 Communication cables - Specifications for test methods - Environmental test methods - Water penetration《通信电缆 试验方法规范 环境试验方法 水渗透性》.pdf

1、BRITISH STANDARD BS EN 50289-4-2:2001 Communication cables Specifications for test methods Part 4-2: Environmental test methods Water penetration The European Standard EN 50289-4-2:2001 has the status of a British Standard ICS 33.120.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRI

2、GHT LAWBS EN 50289-4-2:2001 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 13 November 2001 BSI 13 November 2001 ISBN 0 580 38682 1 Natio

3、nal foreword This British Standard is the official English language version of EN 50289-4-2:2001. 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, to Subcommittee EPL/46/

4、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 found in t

5、he 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 Standards are r

6、esponsible 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 the UK in

7、terests 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 in this doc

8、ument indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 50289-4-2 NORME EUROPENNE EUROPISCHE NORM October 2001 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Eur

9、opisches 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 50289-4-2:2001 E ICS 33.120.10 English version Communication cables Spec

10、ifications for test methods Part 4-2: Environmental test methods Water penetration Cbles de communication Spcifications des mthodes dessai Partie 4-2: Mthodes dessais denvironnement Pntration deau Kommunikationskabel Spezifikationen fr Prfverfahren Teil 4-2: Umweltprfverfahren - Eindringen von Wasse

11、r This European Standard was approved by CENELEC on 2001-05-01. 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 without any alteration. Up-to-date lists and bibliographica

12、l 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 responsibility of a CE

13、NELEC 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, Italy, Luxembourg, N

14、etherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EN 50289-4-2:2001 - 2 - Foreword This European Standard was prepared by the Technical Committee CENELEC TC 46X, Communication cables. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by

15、 CENELEC as EN 50289-4-2 on 2001-05-01. 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 the national standards conflicting with the EN have to

16、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 50289-4-2:2001 Contents 1 Scope .4 2 Normative references4 3 Definitions4 4 Test methods4 4.1 Sample4 4

17、.1.1 Method A .4 4.1.2 Method B .4 4.2 Equipment .5 4.3 Procedure 5 4.4 Requirements.5 4.5 Details to be specified 5 5 Test report5EN 50289-4-2:2001 - 4 - 1 Scope This Part 4-2 of EN 50289 details the method of test to determine the ability of a cable used in analogue and digital communication syste

18、ms to block water migration along a specified length. This test applies to water-blocked cables. It is to be read in conjunction with Part 4-1 of EN 50289, which contains essential provisions for its application. 2 Normative references This European Standard incorporates by dated or undated referenc

19、e, provisions from other publications. These normative references 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

20、 in it by amendment or revision. For undated references, the latest edition of the publication referred to applies (including amendments). EN 50289-4-1 2001 Communication cables - Specifications for test methods Part 4-1: Environmental test methods - General requirements EN 50290-1-2 1) Communicatio

21、n cables - Part 1-2: Definitions 3 Definitions For the purposes of this European Standard, the definitions of EN 50290-1-2 apply. 4 Test methods Compliance shall be checked on samples of cable using one of the two following methods (A or B), as stated in the detail specification. Method A tests for

22、water migration between the outer interstices of the core and the outer sheath, whilst method B tests for water migration over the entire cross-section designed to be water-blocked. 4.1 Sample 4.1.1 Method A A circumferential portion of sheath and wrapping 25 mm wide shall be removed 3 m from one en

23、d of a sample length of cable and a watertight sleeve shall be applied over the exposed core so as to bridge the gap in the sheath, and allow a 1 m height of water to be applied. 4.1.2 Method B A cable sample having a length 1 m longer than the length to be tested, which shall not exceed 3 m. If req

24、uired, the sample is submitted to the bending procedure. A maximum cable length of 3 m shall then be taken from the central portion of the sample. A watertight seal shall be applied to one end of the sample to allow a 1 m height of water to be applied. NOTE For armoured cables where the armour is no

25、t designed to be water-blocked, the armour may be removed before the application of the seal.1)At draft stage.- 5 - EN 50289-4-2:2001 4.2 Equipment Suitable test arrangements are shown in Figure 1. 4.3 Procedure Unless otherwise specified in the detail specification, the sample shall be supported ho

26、rizontally and a 1 m height of water shall be applied for 24 h at a temperature of (20 5) C. A water soluble fluorescent dye or other suitable colourant may be used to aid in the detection of water seepage. Care should be taken in choosing a fluorescent dye that does not react with any of the cable

27、components. 4.4 Requirements No water shall be detected at the unsealed end of the sample. If a fluorescent dye is used, an ultraviolet light may be used for the examination. NOTE The test procedure mentioned above is a basic compliance requirement and for routine tests, samples of shorter length ma

28、y be tested for a shorter time. 4.5 Details to be specified The detail specification shall include : a) method used and cross-section tested, b) bending procedure applied, where applicable, c) quantity and type of dye, where applicable. 5 Test report The test report shall include: number of samples,

29、 test temperature, sample length, pass/fail criteria.EN 50289-4-2:2001 - 6 - 3 m 25 mm Sample Sample Cap 1 m Height of water Figure 1a - Method A 1 m Water Water seal Sample (3 m max.) Figure 1b - Method B Figure 1 - Water penetration testblankBS EN 50289-4-2:2001 BSI 389 Chiswick High Road London W

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