Bsi bs en 50290 2 37 2016

BS EN 50290-2-37:2016 BSI Standards Publication Communication cables Part 2-37: Common design rules and construction — Polyethylene insulation for coaxial cables BS EN 50290-2-37:2016 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 50290-2-37:2016 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 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 © The British Standards Institution 2016 Published by BSI Standards Limited 2016 ISBN 978 580 85078 ICS 29.035.20; 33.120.10 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 31 May 2016 Amendments/corrigenda issued since publication Date Text affected EUROPEAN STANDARD BS EN 50290-2-37:2016 NORME EUROPÉENNE EUROPÄISCHE NORM EN 50290-2-37 ICS 29.035.20; 33.120.10 May 2016 English Version Communication cables - Part 2-37: Common design rules and construction - Polyethylene insulation for coaxial cables Câbles de communication - Partie 2-37: Règles de Kommunikationskabel - Teil 2-37: Gemeinsame Regeln für conception communes et construction - Polyéthylène pour Entwicklung und Konstruktion - Polyethylen- Isoliermischungen für Koaxialkabel enveloppes isolantes pour câbles coaxiaux This European Standard was approved by CENELEC on 2016-03-14 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 CEN-CENELEC Management Centre 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 status 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, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung 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 50290-2-37:2016 E BS EN 50290-2-37:2016 EN 50290-2-37:2016 (E) Contents European foreword Scope Normative references Raw material requirements Cable test requirements Health, safety and environmental regulations Bibliography 10 BS EN 50290-2-37:2016 EN 50290-2-37:2016 (E) European foreword This document (EN 50290-2-37:2016) has been prepared by CLC/TC 46X “Communication cables” The following dates are fixed: • latest date by which this document has to be (dop) 2017-03-14 implemented at national level by publication 2019-03-14 of an identical national standard or by endorsement • latest date by which the national standards (dow) conflicting with this document have to be withdrawn Attention is drawn 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 European Free Trade Association BS EN 50290-2-37:2016 EN 50290-2-37:2016 (E) Scope This Part 2-37 of EN 50290 gives specific requirements for Polyethylene (PE) compounds to be used for the insulation of coaxial cables The standard includes Low Density (LD), Medium Density (MD) and High Density (HD) Polyethylene compounds It is to be read in conjunction with EN 50290-2-20, EN 50117 and other applicable product standards 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 suitable for the specified application 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 referenced document (including any amendments) applies EN 50289-3-9, Communication cables - Specifications for test methods - Part 3-9: Mechanical test methods - Bending tests EN 50289-3-17, Communication cables - Specifications for test methods - Part 3-17: Mechanical test methods - Adhesion of dielectric and sheath 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 60811-501, 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 materials - 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 60745-2) EN 60216 (all parts), Electrical insulating materials – Thermal endurance properties (IEC 60216) EN ISO 527 (all parts), Plastics – Determination of tensile 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 ISO 1183 (all parts), Plastics – Methods for determining the density of non-cellular plastics (ISO 1183) EN ISO 11357-6, Plastics - Differential scanning calorimetry (DSC) - Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) (ISO 11357-6) ISO 974, Plastics — Determination of the brittleness temperature by impact BS EN 50290-2-37:2016 EN 50290-2-37:2016 (E) Raw material requirements The tests are to be carried out on granules or moulded plaques produced from granules of compound This data 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 material Specific requirements are shown (Table 1, Table and Table 3) In the case of special applications, additional requirements could be specified Cable test requirements The anticipated performance assumes standard cable design and conventional process technology and is specified (Table 4) Using 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 Health, safety and environmental regulations The materials are 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 EN 50290-2-37:2016 (E) BS EN 50290-2-37:2016 Table — Insulation compound - physical properties of granules Characteristics1) Test method Unit Solid Foam Density 2) EN ISO 1183 g/cm3 ≤ 0,960 To be recorded 2a Melt flow index 3) (190 °C/2,16 kg) EN ISO 1133 g/10 To be To be recorded recorded4) 2b Melt flow index 3) (140 °C/5,0 kg) EN ISO 1133 g/10 > 42 To be Hardness Shore D 6) (1 s) EN ISO 868 [-] recorded5) > 42 Low Temperature brittleness ISO 974 °C < −76 < −76 Mechanical characteristics EN ISO 527 5.1 Tensile strength - median, MPa 12 10 5.2 Elongation at break - median, % 300 200 Oxidative Induction Time 7) EN ISO 11357-6 To be To be (200 °C) recorded recorded 1) All values of Table shall be provided by the compound supplier, see Clause 2) Median; value limits ± 0,003 g/cm3 3) Median; value limits ± 25 % 4) PE (non nucleated or passive nucleant) 5) PE (active nucleant) 6) Median value to be specified by supplier Specification limits ± 3[-] 7) If a blend of polymer is used, the OIT shall be performed on the blend and not the individual components Table — Insulation compound - dielectric properties Characteristics 1) Test method Unit Solid Foam 2) ≤ 1GHz > 1GHz ≤ 1GHz > 1GHz Dielectric constant (f1), 1MHz 3) IEC 60250 [-] ≤ 2,35 ≤ 2,35 ≤ 2,35 ≤ 2,35 Dissipation factor (f1), 1MHz 4, 5) Dielectric constant (f2), 1,9GHz 3, 6) IEC 60250 [-] < 0,000 12 < 0,000 08 < 0,000 25 < 0,000 12 Dissipation factor (f2), 1,9GHz 4, 6) IEC 60250 or [-] - TBD - TBD IEC 62562 Gradient of Dissipation Factor 7) [-] - < 0,000 22 - < 0,000 IEC 60250 or IEC 62562 [-] - To be - To be recorded recorded 1) All values of Table shall be provided by the compound supplier, see Clause 2) Compounds not containing active nucleant or chemical blowing agent should be tested as solid insulations 3) Median value to be specified by supplier Specification limits ± 0,02 4) Median value to be specified by supplier Specification limits ± 10 % 5) Alternative frequencies may be used Lower frequency (f1) should be in range – 10 MHz 6) Alternative frequencies may be used Upper frequency (f2) should be in range 1–10 GHz 7) Calculation: Gradient = (Tan delta (f2) [-] – Tan delta (f1) [-] / (log (f2) – log (f1)) Table — Insulation compound - combustion properties Characteristics 1,2) Test method Unit Values > 4,3 < 10 Acidity pH EN 60754–2 [-] μS/mm Conductivity EN 50290-2-37:2016 (E) BS EN 50290-2-37:20162ToxicityUnder consideration 1) All values of Table shall be provided by the compound supplier, see Clause 2) Only to be performed if specified in the relevant product standard EN 50290-2-37:2016 (E) BS EN 50290-2-37:2016 Table — Wire insulation properties Characteristics Test method Unit Solid Foam 1) Maximum rated temperature of cable for ≤ 1GHz > 1GHz ≤ 1GHz > 1GHz which the compound can be used EN 60216 2) ° C 70 70 70 70 Mechanical characteristics 3) EN 60811–501 2.1 Tensile strength- median,min EN 50289–3-9, MPa 10 10 na na 2.2 4.3.1, Procedure % 300 300 na na Elongation at break- median,min °C −20 −20 −20 −20 10 x Dia 10 x Dia 10 x Dia 10 x Dia Bending test at low temperature 4a Temperature EN 60811–401 °C No crack No crack or/4b Mandrel diameter No crack No crack Number of turns h 100 ± 100 ± Result to be obtained (during one cycle) 100 ± 100 ± × 24 × 24 EN 60811–501 % × 24 × 24 Thermal ageing na na - temperature EN 50289–3-9, °C 125 125 - duration Ambient Ambient 4.3.1, Procedure Ambient Ambient x Dia x Dia Elongation at break after ageing 3) x Dia x Dia Result to be obtained- median,min No crack No crack Bending test after ageing EN 60811–502 ° C No crack No crack Temperature 100 ± 100 ± Mandrel diameter h 100 ± 100 ± Number of turns Result to be obtained (during one cycle) % > > Shrinkage EN 50289–3-17 N > > - temperature - duration Result to be obtained- max Strip force 4, 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 50290–2-20 for guidance 3) Only to be carried out if the insulation can be removed from the conductor 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 50290-2-37:2016 (E) BS EN 50290-2-37:2016 BS EN 50290-2-37:2016 Bibliography EN 50290-2-37:2016 (E) EN 50117 (all parts), Coaxial Cables 10 This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards Institution (BSI) BSI is the national body responsible for preparing British Standards and other standards-related publications, information and services 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