1、BRITISH STANDARD C ornrnunication cables Part 2-28: Common design rules and construction - Filling compounds for filled cables The European Standard EN 50290-2-28:2002 has the status of a British Standard ICs 33.120.10 BS EN 50290-2-28: 2002 Wk present to the responsible European committee any enqui
2、ries 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
3、 s 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 Catalogu
4、e. 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 compris
5、es a front cover, an inside front cover, the EN title page, pages 2 to 4, 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 15 April 2002 ISBN O 580 39478 6 EUROPEAN STANDARD EN 50290-2-28 NORME EUROPENNE EUROP
6、ISCHE NORM January 2002 ICs 33.120.10 Supersedes HD 624.8 S1:1995 +Al:1996 English version Com m u n ication cables Part 2-28: Common design rules and construction - Filling compounds for filled cables Cbles de communication Partie 2-28: Rgles de conception communes et construction - Matires de remp
7、lissage pour cbles remplis Kommunikationskabel Teil 2-28: Gemeinsame Regeln fr Entwicklung und Konstruktion - Petrolat-F I I masse fr gef I Ite Ka bel This European Standard was approved by CENELEC on 2001-11-01. CENELEC members are bound to comply with the CENKENELEC Internal Regulations which stip
8、ulate the conditions for giving this European Standard 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 Standa
9、rd exists in three official versions (English, French, 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 nationa
10、l electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comi
11、t Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35. B - 1050 Brussels O 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50290-2-28:2002 E EN 50
12、290-2-2812002 -2- Foreword This European Standard was prepared by a joint working group of the Technical Committees CENELEC TC 46X, Communication cables, and CENELEC TC 86A, Optical fibres and optical fibre cables. The text of the draft was submitted to the Unique Acceptance Procedure and was approv
13、ed by CENELEC as EN 50290-2-28 on 2001-1 1-01, This European Standard supersedes HD 624.8 S1:1995 + Al:1996. 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) 2002-08-01 - lat
14、est 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 M/212 given to CENELEC by the European Commission and The European Free Trade Association. -3- EN 50290-2-2812002 1 Scope This Pa
15、rt 2-28 of EN 50290 gives specific requirements for filling compounds for filled cables used in com m unicat ion cables. It is to be read in conjunction with Part 2-20 of EN 50290. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publica
16、tions. 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 in it by amendment or revision.
17、 For undated references the latest edition of the publication referred to applies (including amendments). EN 60811-5-1:1999 Insulating and sheathing materials of electric and optical fibre cables - Common test methods - Part 5: Methods specific to filling compounds - Section 1 : Drop point - Separat
18、ion of oil - Lower temperature brittleness - Total acid number - Absence of corrosive components - Permittivity at 23C - D.C. resistivity at 23 “C and 100 “C (IEC 60811-5-1:1990, mod.) 3 Req u i remen ts In case of specific applications, additional performances could be needed. Relevant test methods
19、 and requirements shall be included in the detail specifications of the cables. EN 50290-2-2812002 -4- Table 1 - Filling compounds for filled cables (Interstitial filling compounds not intended to be used in contact with optical fibre) Characteristics Test method Unit Grades Drop point EN 6081 1-5-1
20、 clause 4 “C 2 50 I 70 70 Separation of oil EN 6081 1-5-1 clause 5 “C h mm - temperature - duration 50 f 2 24 5 50 f 2 24 5 Result to be obtained, Max. Low temperature brittleness ) EN 6081 1-5-1 clause 6 - temperature - duration “C h -10f1 2 F 20 -10f1 2 F 20 Result to be obtained number of cracks,
21、 Max. Total acid number EN 6081 1-5-1 clause 7 Result to be obtained, Max. m g KO H/g 5 Absence of corrosive components EN 6081 1-5-1 clause 8 Vo corrosion Vo corrosion 6 Permittivity 3, - frequency Result to be obtained, Max. EN 6081 1-5-1 clause 9 kHz 1 2,3 1 2,3 7 DC Resistivity 3, EN 6081 1-5-1
22、clause 10 - test voltage V R.m R.m 100/500 1 o8 1011 100/500 Result to be obtained, min. at 100“ C at 23“ C 1 o8 1011 1) 2) 3) The low temperature brittleness test is not required for type 2 compounds having a drop point 80“ C. For filling compounds with improved thixotropic, swelling or electrical
23、properties, higher values are permissible. These requirements are only applicable to interstitial filling compounds used in cables including copper elements. BS EN 50290-2-28: 2002 BSI 389 Chiswick High Road Lon don w4 4AL BSI is the independent national body responsible for preparing British Standa
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