EN 50289-4-2-2001 en Communication Cables - Specifications for Test Methods Part 4-2 Environmental Test Methods - Water Penetration《通信电缆 试验方法规范 第4-2部分 环境试验方法 水渗透》.pdf

1、BRITISH STANDARD C ornrnunication cables Specifications for test methods Part 4-2: Environmental test methods - Water penetration The European Standard EN 502894-2:2001 has the status of a British Standard ICs 33.120.10 BS EN 5028942:200 1 Wk present to the responsible European committee any enquiri

2、es 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 obtained on request to its secretary. Cr oss-r e fer enc e s

3、 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” facility of the BSI Standards Electronic Catalogue.

4、 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 obligations. Summary of pages This document comprises

5、 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 document indicates when the document was last issued. O BSI 13 November 2001 ISBN O 580 38682 I EUROPEAN STANDARD EN 50289-4-2 NORME EUROPENNE EUROP

6、f ISCHE NORM October 2001 ICs 33.120.10 English version Communication cables Specifications for test methods Part 4-2: Environmental test methods Water penetration C, b I es de communication Spcifications des mthodes dessai Partie 4-2: Mthodes dessais denvironnement Eindringen von Wasser P n tra t i

7、o n d ea u Kommunikationskabel Spezifikationen far Prfverfahren Teil 4-2: UmweltprJfverfahren - This European Standard was approved by CENELEC on 2001-05-01. CENELEC members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard

8、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 to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French,

9、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 Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czec

10、h Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europo/o&ches Komi

11、tee f, r Elektrotechnische Normung Central Secretariat: rue de Stassart 35. B - 1050 Brussels O 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 EN 50289-4-2 12001 -2- Foreword This European Standard was prepa

12、red by the Technical Committee CENELEC TC 46X, Com m unicat ion cables. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by 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 leve

13、l by publication of an identical national standard or by endorsement (d0P) 2002-04-01 latest date by which the national standards conflicting with the EN have to be withdrawn (daw) 2004-04-0 1 This European Standard has been prepared under the European Mandate M/212 given to CENELEC by the European

14、Commission and the European Free Trade Association. -3- Contents EN 50289-4-2 12001 4 Normat ive references 4 4 Test methods 4 4.1 Sample 4 Method A . 4 Method B . 4 4.2 Equipment 5 4.3 Procedure 5 4.4 Requirement 5 4.5 Details to be 5 5 Test report 5 4. I. I 4.1.2 EN 50289-4-2 12001 -4- 1 Scope Thi

15、s Part 4-2 of EN 50289 details the method of test to determine the ability of a cable used in analogue and digital communication systems 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 cont

16、ains 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 hereafter. For dated

17、 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 appl ies (including am endm ents). EN 50289-4-1 2001 Commun

18、ication cables - Specifications for test methods Part 4-1 : Environmental test methods - General requirements Communication cables - Part 1-2: Definitions EN 50290-1-21) 3 Definitions For the purposes of this European Standard, the definitions of EN 50290-1-2 apply. 4 Test methods Compliance shall b

19、e 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 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

20、 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 end 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

21、 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 required, 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 sea

22、l shall be applied to one end of the sample to allow a 1 m height of water to be applied. NOTE application of the seal. For armoured cables where the armour is not designed to be water-blocked, the armour may be removed before the 1) At draft stage -5- EN 50289-4-2 12001 4.2 Equipment Suitable test

23、arrangements are shown in Figure 1 4.3 Procedure Unless otherwise specified in the detail specification, the sample shall be supported horizontally and a 1 m height of water shall be applied for 24 h at a temperature of (20 15) OC. A water soluble fluorescent dye or other suitable colourant may be u

24、sed 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 components. 4.4 Req u i remen ts 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

25、 the examination. NOTE The test procedure mentioned above is a basic compliance requirement and for routine tests, samples of shorter length may be tested for a shorter time. 4.5 Details to be specified The detail specification shall include : a) b) c) method used and cross-section tested, bending p

26、rocedure applied, where applicable, quantity and type of dye, where applicable. 5 Test report The test report shall include: number of samples, test temperature, sample length, pass/fail criteria EN 50289-4-2 12001 -6- Im Height of water Sample t Figure la - Method A Water seal lm Figure 1 b - Metho

27、d B Figure 1 -Water penetration test BS EN 50289-4-212001 BSI 389 Chiswick High Road Lon don w4 4AL BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Re

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