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1、BRITISH STANDARD BS 7878-8: 1997 Materials used in communication cables Part 8: Filling compounds for filled cables ICS 29.040.20; 33.120.10 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 12:02:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7878-8:1997 This B
2、ritish Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 January 1997 BSI 12-1998 The following BSI references relate to the work on this standard: Committee reference EPL/46/1
3、 Draft for comment 94/210699 DC ISBN 0 580 26370 3 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee EPL/46, Cables, wires and waveguides, RF connectors and accessories for cabling and signalling, to Subcommittee EPL/46/1,
4、Communication cables, on which the following bodies were represented: AEA Technology British Approvals Service for Cables British Broadcasting Corporation British Cable Makers Confederation British Telecommunications plc ERA Technology Federation of the Electronics Industry London Underground Nation
5、al Supervising Inspectorate (BSI PC) Society of Cable Telecommunication Engineers Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 12:02:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7878-8:1997 BSI 12-1
6、998i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Filling compounds for filled cables3 General comment 3 List of references Inside back cover Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 12:02:45 GMT+00:00 2006, Unco
7、ntrolled Copy, (c) BSI BS 7878-8:1997 ii BSI 12-1998 National foreword This British Standard has been prepared by Subcommittee EPL/46/1 and is the English language version of HD 624.8 Sl:1995 Materials used in communication cables Part 8: Filling compounds for filled cables published by the European
8、 Committee for Electrotechnical Standardization (CENELEC). 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 l
9、egal obligations. Cross-reference Publication referred toCorresponding British Standard HD 505 seriesBS 6469 series. Insulating and sheathing materials of electric cables Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the HD title page, pages 2 to 4, a
10、n inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 12:02:45
11、GMT+00:00 2006, Uncontrolled Copy, (c) BSI HARMONIZATION DOCUMENT DOCUMENT DHARMONISATION HARMONISIERUNGSDOKUMENT HD 624.8 S1 September 1995 ICS 33.120.10 Descriptors: Filling compounds for filled cables, communication cables English version Materials used in communication cables Part 8: Filling com
12、pounds for filled cables Matriaux utiliss dans les cbles de communication Partie 8: Matires de remplissage pour cbles remplis Werkstoffe fr Kommunikationskabel Teil 8: Petrolat-Fllmasse fr gefllte Kabel This Harmonization Document was approved by CENELEC on 1995-07-04. CENELEC members are bound to c
13、omply with the CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this Harmonization Document on a national level. Up-to-date lists and bibliographical references concerning national implementation may be obtained on application to the Central Secretariat or to any
14、 CENELEC member. This Harmonization Document exists in three official versions (English, French, German). CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, S
15、pain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1995 Copyright reserved to CENELEC m
16、embers Ref. No. HD 624.8 S1:1995 E Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 12:02:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7878-8:1997 2 BSI 12-1998 Foreword This Harmonization Document was prepared by the Technical Committee CENELEC TC 46X, Commu
17、nication cables. The text of the draft was submitted to the formal vote and was approved by CENELEC as HD 624.8 S1 on 1995-07-04. The following dates were fixed: For products which have complied with the relevant national standard before 1996-07-01, as shown by the manufacturer or by a certification
18、 body, this previous standard may continue to apply for production until 2001-07-01. latest date by which the existence of the HD has to be announced at national level(doa) 1996-01-01 latest date by which the HD has to be implemented at national level by publication of a harmonized national standard
19、 or by endorsement(dop) 1996-07-01 latest date by which the national standards conflicting with the HD have to be withdrawn(dow) 1996-07-01 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 12:02:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7878-8:1997 BSI 12-
20、19983 Filling compounds for filled cables (Interstitial filling compounds not intended to be used in contact with optical fibre) General comment The compatibility with other cable materials (insulation, sheath, fibre tubes,.) shall be specified in the relevant either cable or material specification.
21、 CharacteristicsTest methodUnitGrades Type 1Type 2 1Drop pointHD 505.5.1C 50 70 4 70 2Separation of oilHD 505.5.1 5 temperatureC50 250 2 durationh2424 Result to be obtained, maxmm55 3Low temperature brittlenessaHD 505.5.1 6 temperatureC 10 1 10 1 durationh22 Result to be obtained number of cracks, m
22、ax.F 20F 20 4Total acid numberbHD 505.5.1 7 Result to be obtained, maxmgKOH/g0,50,5 5Absence of corrosive componentsHD 505.5.1no corrosionno corrosion 8 6PermittivitycHD 505.5.1 9 frequencykHz11 Result to be obtained, max2,52,5 7D C ResistivitycHD 505.5.1 10 test voltageV100/500100/500 Result to be
23、obtained, min at 100 C.m 108108 at 23 C.m 10111011 a The low temperature brittleness test is not required for type 2 compounds having a drop point 80 C. b For filling compounds with improved thixotropic, swelling or electrical properties, higher values are permissible. c These requirements are only
24、applicable to interstitial filling compounds used in cables including copper elements. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 12:02:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: London South Bank University, London South Bank Univ
25、ersity, Fri Dec 08 12:02:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7878-8:1997 BSI 12-1998 List of references See national foreword. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 12:02:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BSI 389 Chiswick High
26、Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Insti
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33、istration. Tel: 020 8996 7002. Fax: 020 8996 7001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be r
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35、ze, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 12:02:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
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