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BRITISH STANDARD BS EN 50290 2 27 2002+A1 2007 Incorporating corrigendum May 2010 Communication cables — Part 2 27 Common design rules and construction — Halogen free flame retardant thermoplastic she[.]
BRITISH STANDARD BS EN 50290-2-27: 2002+A1:2007 Incorporating corrigendum May 2010 Communication cables — Part 2-27: Common design rules and construction — Halogen free flame retardant thermoplastic sheathing compounds ICS 29.035.20; 33.120.10 BS EN 50290-2-27:2002+A1:2007 National foreword This British Standard is the UK implementation of EN 50290-2-27:2002+A1:2007, incorporating corrigendum May 2010 It supersedes BS EN 50290-2-27:2002 which is withdrawn The UK participation in its preparation was entrusted by Technical Committee EPL/46, Cables, wires and waveguides, RF connectors and accessories for communication and signalling, to Subcommittee EPL/46/1, Communication cables A list of organizations represented on this subcommittee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 15 April 2002 © BSI 2010 ISBN 978 580 71597 Amendments/corrigenda issued since publication Amd No Date Comments 17271 31 August 2007 Table replaced 31 August 2010 Implementation of CENELEC corrigendum May 2010; Table replaced EN 50290-2-27:2002+A1 EUROPEAN STANDARD NORME EUROPÉENNE June 2007 EUROPÄISCHE NORM ICS 29.035.20; 33.120.10 Supersedes HD 624.7 S1:1994 Incorporating corrigendum May 2010 English version Communication cables Part 2-27: Common design rules and construction – Halogen free flame retardant thermoplastic sheathing compounds Câbles de communication Partie 2-27: Règles de conception communes et construction – Mélanges pour gainage thermoplastique sans halogène et avec propagation retardée de flamme Kommunikationskabel Teil 2-27: Gemeinsame Regeln für Entwicklung und Konstruktion Halogenfreie flammwidrige thermoplastische Mantelmischungen This European Standard was approved by CENELEC on 2001-11-01 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 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 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, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels © 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members Ref No EN 50290-2-27:2002 E BS EN 50290-2-27:2002+A1:2007 EN 50290-2-27:2002+A1:2007 (E) -2Foreword 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 approved by CENELEC as EN 50290-2-27 on 2001-11-01 This European Standard supersedes HD 624.7 S1:1994 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 – latest 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 Foreword to amendment A1 This amendment to the European Standard EN 50290-2-27:2002 was prepared by a joint working group of the Technical Committee CENELEC TC 46X, Communication cables, and the Technical Committee CENELEC TC 86A, Optical fibres and optical fibre cables The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as amendment A1 to EN 50290-2-27:2002 on 2007-03-01 The following dates were fixed: – latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2008-03-01 – latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2010-03-01 This amendment introduces a new grade of halogen free insulation compound for high temperature -31 BS EN 50290-2-27:2002+A1:2007 EN 50290-2-27:2002+A1:2007 (E) Scope This Part 2-27 of EN 50290 gives specific requirements for halogen free flame retardant thermoplastic sheathing compounds used in communication cables It is to be read in conjunction with Part 2-20 of EN 50290 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 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 applies (including amendments) EN 60811-1-1:1995 Insulating and sheathing materials of electric and optical cables - Common test methods Part 1-1: General application - Measurement of thickness and overall dimensions - Tests for determining the mechanical properties (IEC 60811-1-1:1993) EN 60811-1-2:1995 Insulating and sheathing materials of electric cables - Common test methods Part 1-2: General application Thermal ageing methods (IEC 60811-1-2:1985 + corr May 1986 + A1:1989) EN 60811-1-4:1995 Insulating and sheathing materials of electric and optical cables - Common test methods Part 1-4: General application - Tests at low temperature (IEC 60811-1-4:1985 + corr May 1986 + A1:1993) EN 60811-3-1:1995 Insulating and sheathing materials of electric and optical cables - Common test methods Part 3-1: Methods specific to PVC compounds - Pressure test at high temperature - Tests for resistance to cracking (IEC 60811-3-1:1985 + corr May 1986) HD 405.3 S1:1993 Tests on electric cables under fire conditions Part 3: Tests on bunched wires or cables (IEC 60332-3:1992) IEC 60754-2:1991 + A1:1997 Test on gases evolved during combustion of materials from cables Determination of degree of acidity of gases by measuring pH and conductivity Requirements In case of specific applications, additional performances could be needed Relevant test methods and requirements shall be included in the detail specifications of the cables BS EN 50290-2-27:2002+A1:2007 EN 50290-2-27:2002+A1:2007 (E) -4- Table - Halogen free flame retardant thermoplastic sheathing compounds Characteristics Maximum rated temperature at cable for which the compound can be used Mechanical characteristics (see note 1) 2.1 In state of delivery 2.11 Tensile strength - median, 2.12 2.2 2.21 2.22 Test method Unit °C 70 90 MPa 9 % 125 125 Ageing conditions - temperature - duration °C h 100 ± x 24 110 ± x 24 Tensile strength - variation, max % ± 30 EN 60811-1-1 9.2 Elongation at break - median, After ageing EN 60811-1-2 8.1 Elongation at break - median, - variation, max Behaviour at low temperature 4.1 Bending test at low b temperature % % °C Result to be obtained Elongation test at low c temperature ± 30 a 100 ± 30 > 0,6 100 ± 40 ≤ 0,6 100 ± 40 EN 60811-1-4 8.2 Test conditions - temperature 4.2 Grades - 15 ± - 15 ± No cracks No cracks EN 60811-1-4 8.4 Test conditions - temperature °C -15 ± -15 ± Elongation, % 20 20 BS EN 50290-2-27:2002+A1:2007 EN 50290-2-27:2002+A1:2007 (E) -5- Table - Halogen free flame retardant thermoplastic sheathing compounds (continued) Characteristics Pressure test at high temperature Test method Result to be obtained - depth of indentation median, max Oxygen index (see note 2) Corrosivity Smoke opacity (see note 3) Toxicity a b c Grades EN 60811-3-1 8.2 Test conditions - temperature - duration (for all values of cable diameter) Unit °C 80 ± 90 ± h 4 % 50 50 To meet To meet To meet EN ISO 4589-2 IEC 60754-2 Under consideration Provisional value For outer diameters up to and including 12,5 mm For outer diameters exceeding 12,5 mm NOTE Guidance for the preparation of samples for tensile and elongation tests before and after ageing If the samples under test have ridges on the inside caused by the inner components of the cable (cores or wire braid) then these ridges should be removed by buffing, cutting or skiving NOTE Oxygen index measurement has been found to be a suitable indicator to guide selection and monitoring of materials used in cables which have to meet the fire performance tests specified in the relevant cable specification NOTE For selection of materials used in cables, IEC 60695-6 may be considered BS EN 50290-2-27: 2002+A1:2007 BSI - 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