1、BRITISH STANDARD BS EN 50290-2-27: 2002+A1:2007Incorporating corrigendum May 2010Communication cables Part 2-27: Common design rules and construction Halogen free flame retardant thermoplastic sheathing compoundsICS 29.035.20; 33.120.10nullnull nullnullnullnullnullnullnull nullnullnullnullnullnullnu
2、ll nullnullnull nullnullnullnullnullnullnullnullnullnull nullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnullnull nullnullnullBS EN 50290-2-27:2002+A1:2007National forewordThis British Standard is the UK implementation of EN 50290-2-27:2002
3、+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 It supersedes BS EN 50290-2-27:2002 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee EPL/46, Cables, wires and waveguides, RF connectors and accessories for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/
4、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 Standa
5、rd 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 2010Amendments/corrigenda issued since publicationAmd. No. Date Comments 17271 31 August 2007 Table 1 replaced31 August 2010 Im
6、plementation of CENELEC corrigendum May 2010; Table 1 replacedISBN 978 0 580 71597 6EUROPEAN STANDARD EN 50290-2-27:2002+A1NORME EUROPENNEEUROPISCHE NORMC E N E L E CEuropean Committee for Electrotechnical StandardizationComit Europen de Normalisation ElectrotechniqueEuropisches Komitee fr Elektrote
7、chnische NormungC e n t r a l S e c r e t a r i a t : r u e d e S t a s s a r t 3 5 , B - 1 0 5 0 B r u s s e l s 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 EICS 29.035.20; 33.120.10 Supersedes HD 624.7 S1
8、:1994English versionCommunication cablesPart 2-27: Common design rules and construction Halogen free flame retardant thermoplasticsheathing compoundsCbles de communicationPartie 2-27: Rgles de conceptioncommunes et construction Mlanges pour gainage thermoplastiquesans halogne et avec propagationreta
9、rde de flammeKommunikationskabelTeil 2-27: Gemeinsame Regelnfr Entwicklung und Konstruktion -Halogenfreie flammwidrigethermoplastische MantelmischungenThis European Standard was approved by CENELEC on 2001-11-01. CENELEC members are bound tocomply with the CEN/CENELEC Internal Regulations which stip
10、ulate the conditions for giving thisEuropean Standard the status of a national standard without any alteration.Up-to-date lists and bibliographical references concerning such national standards may be obtained onapplication to the Central Secretariat or to any CENELEC member.This European Standard e
11、xists in three official versions (English, French, German). A version in anyother language made by translation under the responsibility of a CENELEC member into its ownlanguage and notified to the Central Secretariat has the same status as the official versions.CENELEC members are the national elect
12、rotechnical 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.J une 2007Incorporating corrigendum May 2010- 2 -ForewordThis European Standar
13、d was prepared by a joint working group of the Technical Committees CENELECTC 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 CENELECas EN 50290-2-27 on 2001-11-01.This E
14、uropean Standard supersedes HD 624.7 S1:1994.The following dates were fixed:atsbyhctEN hasto beimplentdat national level by publication of an identicalnational standard or by endorsement (dop) 2002-08-01lebywhictail adrs conflitgw i t h t h e E N h a v e t o b e w i t h d r a w n ( d o w ) 2 0 0 4 -
15、 0 8 - 0 1This European Standard has been prepared under the European Mandate M/212 given to CENELEC by theEuropean Commission and the European Free Trade Association._Foreword to amendment A1This amendment to the European Standard EN50290-2-27:2002 was prepared by a joint working groupof the Techni
16、cal Committee CENELEC TC 46X, Communication cables, and the Technical Committee CE NE LE C TC 86A, Opt ical f ibres and opt ic al f ibre c ables.The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELECas amendment A1 to EN 50290-2-27:2002 on 2007-03-01.The f
17、ollowing dates were fixed: latest date by which the amendment has to be implemented at nationallevel by publication ofan 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 Thi
18、s amendment introduces a new grade of halogen free insulation compound for high temperature._BS EN 50290-2-27:2002+A1:2007EN 50290-2-27:2002+A1:2007 (E)- 3 -1ScopeThis Part 2-27 of EN50290 gives specific requirements for halogen free flame retardant thermoplastics h e a t h i n g c o m p o u n d s u
19、 s e d i n c o m m u n i c a t i o n c a b l e s .It is to be read in conjunction with Part 2-20 of EN 50290.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 public
20、ations are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publications applyto this European Standard only when incorporated in it by amendment or revision. For undated referencesthe latest edition of the publication referred to applies (including amendm
21、ents).EN 60811-1-1:1995 Insulating and sheathing materials of electric and optical cables - Common testmethods - Part 1-1: General application - Measurement of thickness and overalldimensions - Tests for determining the mechanical properties(IEC 60811-1-1:1993)EN 60811-1-2:1995 Insulating and sheath
22、ing materials of electric cables - Common test methodsPart 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 testmethods - Part 1-4: General application - Tests
23、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 - Commontest methods - Part 3-1: Methods specific to PVC compounds - Pressure testat high temperature - Tests for resistance to cracking(IEC 60811-3-1:
24、1985 + corr. May 1986)HD 405.3 S1:1993 Tests on electric cables under fire conditions - Part 3: Tests on bunched wires orcables (IEC 60332-3:1992)IEC 60754-2:1991+ A1:1997Test on gases evolved during combustion of materials from cables -Determination of degree of acidity of gases by measuring pH and
25、 conductivity3RequirmIn case of specific applications, additional performances could be needed. Relevant test methods andrequirements shall be included in the detail specifications of the cables.BS EN 50290-2-27:2002+A1:2007EN 50290-2-27:2002+A1:2007 (E)- 4 -Table 1 - Halogen free flame retardant th
26、ermoplastic sheathing compounds Characteristics Test method Unit Grades 1 Maximum rated temperature at cable for which the compound can be used C 70 90 2 Mechanical characteristics (see note 1) 2.1 2.11 2.12 In state of delivery Tensile strength - median, min. Elongation at break - median, min. EN 6
27、0811-1-1 9.2 MPa % 9 125 9 125 2.2 2.21 After ageing Ageing conditions - temperature - duration Tensile strength - variation, max. EN 60811-1-2 8.1 C h % 100 2 7 x 24 30 110 2 7 x 24 30 2.22 Elongation at break - median, min. - variation, max. % % 100 30 0,6 100 a 40 0,6 100 40 4 Behaviour at low te
28、mperature 4.1 Bending test at low temperature bTest conditions - temperature Result to be obtained EN 60811-1-4 8.2 C - 15 2 No cracks - 15 2 No cracks 4.2 Elongation test at low temperature cTest conditions - temperature Elongation, min. EN 60811-1-4 8.4 C % -15 2 20 -15 2 20 BS EN 50290-2-27:2002+
29、A1:2007EN 50290-2-27:2002+A1:2007 (E)- 5 -Table 1 - Halogen free flame retardant thermoplastic sheathing compounds (continued) Characteristics Test method Unit Grades 5 Pressure test at high temperature Test conditions - temperature - duration (for all values of cable diameter) Result to be obtained
30、 - depth of indentation median, max. EN 60811-3-1 8.2 C h % 80 2 4 50 90 2 4 50 6 Oxygen index (see note 2) EN ISO 4589-2 7 Corrosivity IEC 60754-2 To meet To meet To meet 8 Smoke opacity (see note 3) 9 Toxicity Under consideration a Provisional value. b For outer diameters up to and including 12,5
31、mm. cFor outer diameters exceeding 12,5 mm. NOTE 1 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 remov
32、ed by buffing, cutting or skiving. NOTE 2 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 3 For selection of materials us
33、ed in cables, IEC 60695-6 may be considered. BS EN 50290-2-27:2002+A1:2007EN 50290-2-27:2002+A1:2007 (E)BSI GroupHeadquarters 389 Chiswick High Road, London, W4 4AL, UK Tel +44 (0)20 8996 9001 Fax +44 (0)20 8996 7001 standardsBSI - British Standards InstitutionBSI is the independent national body r
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