1、BS EN 50290-2-38:2016Communication cablesPart 2-38: Common design rules andconstruction Polypropylene insulation forcoaxial cablesBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 50290-2-38:2016 BRITISH STANDARDNational forewordThis British Standard is the UK im
2、plementation of EN 50290-2-38:2016.The UK participation in its preparation was entrusted to Technical Committee EPL/46, Cables, wires and waveguides, radio frequency connectors and accessories for communication and signalling.A list of organizations represented on this committee can be obtained on r
3、equest to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 85079 0 ICS 29.035.20; 33.120.10 Compliance
4、 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 31 May 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 50290-2-38:2016EUROPEAN STANDAR
5、D NORME EUROPENNE EUROPISCHE NORM EN 50290-2-38 May 2016 ICS 29.035.20; 33.120.10 English Version Communication cables - Part 2-38: Common design rules and construction - Polypropylene insulation for coaxial cables Cbles de communication - Partie 2-38: Rgles de conception communes et construction -
6、Polypropylene pour enveloppes isolantes pour cbles coaxiaux Kommunikationskabel - Teil 2-38: Gemeinsame Regeln fr Entwicklung und Konstruktion - Polypropylen-Isoliermischungen fr Koaxialkabel This European Standard was approved by CENELEC on 2016-03-14. CENELEC members are bound to comply with the C
7、EN/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 CEN-CENELEC Management C
8、entre 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 CEN-CENELEC Management Centre has the same st
9、atus as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuan
10、ia, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische N
11、ormung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50290-2-38:2016 E BS EN 50290-2-38:2016Contents European foreword . 3 1 Scope 4 2 Normative references . 4
12、3 Raw material requirements . 5 4 Cable test requirements . 5 5 Health, safety and environmental regulations 5 Bibliography 8 EN 50290-2-38:2016 (E)BS EN 50290-2-38:2016European foreword This document (EN 50290-2-38:2016) has been prepared by CLC/TC 46X “Communication cables”. The following dates ar
13、e fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2017-03-14 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2019-03-14 Attention is drawn
14、to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CENELEC by the European Commission and the Europ
15、ean Free Trade Association. EN 50290-2-38:2016 (E)BS EN 50290-2-38:20161 Scope This Part 2-38 of EN 50290 gives specific requirements for Polypropylene (PP) compounds to be used for the insulation of coaxial cables. It is to be read in conjunction with EN 50290-2-20, EN 50117 and other applicable pr
16、oduct standards. Grades PP-S1 and PP-F1 correspond to materials specified in the previous version 50290-2-25. These relatively soft Polypropylene compounds have good low temperature properties and are highly stabilized. Grades PP-S2 and PP-F2 exhibit properties more typical of Polypropylene and are
17、designed for general Coax applications where high crush resistance and superior dielectric properties are needed. Using raw material and type test data as outlined in this standard, the raw material supplier will have sufficient data to demonstrate compliance and warrant that the material is suitabl
18、e for the specified application. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referen
19、ced document (including any amendments) applies. EN 50289-3-17, Communication cables - Specifications for test methods - Part 3-17: Mechanical test methods - Adhesion of dielectric and sheath EN 50289-3-9, Communication cables - Specifications for test methods - Part 3-9: Mechanical test methods - B
20、ending tests EN 60216 (all parts), Electrical insulating materials Thermal endurance properties (IEC 60216) EN 60811-401, Electric and optical fibre cables - Test methods for non-metallic materials - Part 401: Miscellaneous tests - Thermal ageing methods - Ageing in an air oven (IEC 60811-401) EN 60
21、811-501, Electric and optical fibre cables - Test methods for non-metallic materials - Part 501: Mechanical tests - Tests for determining the mechanical properties of insulating and sheathing compounds (IEC 60811-501) EN 60811-502, Electric and optical fibre cables - Test methods for non-metallic ma
22、terials - Part 502: Mechanical tests - Shrinkage test for insulations (IEC 60811-502) EN 60754-2, Test on gases evolved during combustion of materials from cables - Part 2: Determination of acidity (by pH measurement) and conductivity (IEC 60754-2) EN ISO 527 (all parts), Plastics Determination of t
23、ensile properties (ISO 527) EN ISO 868, Plastics and ebonite - Determination of indentation hardness by means of a durometer (Shore hardness) (ISO 868) EN ISO 1133 (all parts), Plastics Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics (ISO 1133) EN
24、 ISO 1183 (all parts), Plastics Methods for determining the density of non-cellular plastics (ISO 1183) EN ISO 179-1, Plastics - Determination of Charpy impact properties - Part 1: Non-instrumented impact test (ISO 179-1) EN ISO 11357-6, Plastics - Differential scanning calorimetry (DSC) - Part 6: D
25、etermination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) (ISO 11357-6) EN 50290-2-38:2016 (E)BS EN 50290-2-38:20163 Raw material requirements The tests are to be carried out on granules or moulded plaques produced from granules of compound. This dat
26、a are to be provided by the compound supplier. For compounds intended for foam application the properties shall be measured on unexpanded compound or the base polymer without blowing agent. Relevant test methods, requirements and limits shall be included in any supply specification of the raw materi
27、al. Specific requirements are shown (Table 1, Table 2 and Table 3). In the case of special applications, additional requirements could be specified. 4 Cable test requirements The anticipated performance assumes standard cable design and conventional process technology and is specified (Table 4). Usi
28、ng type test data the raw material supplier is expected to demonstrate compliance and warrant that the material is suitable for the specified application. In the case of special applications, additional requirements could be specified. 5 Health, safety and environmental regulations The materials are
29、 subject to Health, Safety and Environment (HSE) requirements as defined in EN 50290-2-20. Any deviations or compliance failures shall be identified by the raw material supplier and necessary corrective actions to be undertaken agreed with the cable maker. Table 1 Insulation compound - physical prop
30、erties of granules Characteristics1)Test method Unit Solid Foam PP-S1 6) PP-S2 6)PP-F1 6)PP-F2 6)1 Density2)EN ISO 1183 g/cm3 0,915 0,915 0,915 0,915 2a Melt flow index 3)(230C/2,16 kg) EN ISO 1133 g/10 min To be recorded To be recorded To be recorded To be recorded 3 Hardness Shore D (1 s) 4)EN ISO
31、 868 - 62 67 62 67 4 Low Temperature brittleness (Charpy) (20C, Energy (unnotched) EN ISO 179-1 kJ/m2 25 10 25 10 5 Mechanical characteristics EN ISO 527 Tensile strength- median, min. MPa 25 25 25 25 6 Oxidative Induction Time (200 C)5)EN ISO 11357-6 min 30 15 30 15 1) All values of Table 1 shall b
32、e provided by the compound supplier, see Clause 3. 2) Median; value limits 0,003 g/cm3. 3) Median; value limits 25 %. 4) Median value to be specified by supplier. Specification limits 3-. 5) If a blend of polymer is used, the OIT shall be performed on the blend and not the individual components. 6)
33、For definitions see Clause 1. EN 50290-2-38:2016 (E)BS EN 50290-2-38:2016Table 2 Insulation compound - dielectric properties Characteristics1)Test method Unit Solid Foam2)PP-S1 PP-S2 PP-F1 PP-F2 1 Dielectric constant (f1), 1MHz 3)IEC 60250 - 2,27 2,27 2,27 2,27 2 Dissipation factor (f1), 1MHz 4, 5)I
34、EC 60250 - 4,3 5 5 5 5 1) Includes foam skin. 2) Informative. Any procedure based on the Arrhenius principals which can predict a greater than 20 000 h life expectancy at the indicated temperature. See EN 502902-20 for guidance. 3) Only to be carried out if the insulation can be removed from the con
35、ductor without damage and/or the insulation thickness is less than 0,8 mm. 4) Conductor skin permitted if needed to achieve required result. 5) Test length (L) = 25mm unless otherwise specified in cable product standard EN 50290-2-38:2016 (E)BS EN 50290-2-38:2016Bibliography EN 50117, Coaxial Cables
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