EN 50343 EUROPEANSTANDARD NORMEEUROPEENNE EUROPAISCHENORM October2024 ICS45.060.01 Supersedes EN 50343:2014; EN 50343:2014/A1:2017 English Version Railway applications - Rolling stock - Rules for installation of cabling Applications ferroviaires - Materiel roulant - Regles Bahnanwendungen - Fahrzeuge - Regeln fur die Installation d'installation du cablage von elektrischen Leitungen This European Standard was approved by CENELEC on 2024-08-12. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions forgiving 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 ManagementCentreortoanyCENELECmember. same status as the official versions. CENELEC members arethenationalelectrotechnical committees ofAustria,Belgium,Bulgaria,Croatia,Cyprus,the Czech Republic Denmark,Estonia, Finland, France,Germany,Greece,Hungary,Iceland, Ireland, Italy,Latvia,Lithuania, Luxembourg,Malta, the Netherlands,Norway,Poland,Portugal, Republic of North Macedonia,Romania,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland, Turkiye and the United Kingdom. European Committee for Electrotechnical Standardization Comite Europeen de Normalisation Electrotechnique Europaisches Komitee fur Elektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels @ 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref.No.EN50343:2024E EN 50343:2024 (E) Contents Page European foreword... 4 1 Scope .. .5 2 Normative references .... 3 3.1 Terms and definitions... 3.2 Abbreviations ... 9 4 Technical requirements.. .9 4.1 General requirements .... 4.2 Selection of type and size of cables ....... 4.3 Bundling of cables .. .17 4.4 Flexibility of cables... 4.5 Minimum cross-sectional area of conductors .... 7 4.6 Use of green and yellow colour...... 4.7 Bending radii and other mechanical requirements .. .18 4.8 Re-termination... .20 4.9 ...20 4.10 Connectionstobusbars 4.11 Separation of cables with different voltage levels and for safety reasons.... .20 4.12 Provisions for refurbishment and maintenance, including inspection and repair ..22 4.13 Fire prevention, cable laying and cabling behaviour in case of fire.... 4.14 Provision of spares... 4.15 Requirements for fixing... 24 4.16 Clearances and creepage distances .25 4.17 Requirements for electrical terminations....... 4.18 Useofheat-shrinkablesleeves .28 4.19 Connections for return current.. .28 4.20 Storage of cables . .28 4.21 Cable conduits .... 4.22 Electricalboltedconnections. .29 5 EMC requirements 31 5.1 General. .31 5.2 Cable categories .31 5.3 Separationofcables 5.4 Return conductor.. .32 5.5 Use of conductive structure .. 32 5.6 Shielding and earthing ...... 5.7 Supply connection from battery.... 5.8 Databus lines. .33 6 Marking foridentification.. 6.1 General. 33 6.2 Marking for identification of cables and busbars. 6.3 Marking for identification of terminal blocks, individual terminals, plugs and sockets ....34 6.4 Marking of insulators... 6.5 Marking for warning against electrical shock. 34 6.6 Marking using heat-shrinkable sleeves..... 7 7.1 General concerning testing 7.2 Electrical insulation tests... ...35 ....39 Annex B (informative) Cable sizing - Examples of current ratings ... 2 EN 50343:2024 (E) Annex C (normative) Cable sizing Calculating current ratings for temperature classes other than Annex E (normative) Cable sizing - Cable lifetime expectation E.1 General cable lifetime consideration E.2 Reducing cable lifetime. E.3 Increasing cable lifetime Annex F (informative) Cable sizing Calculation examples. F.1 Cables sizing calculation examples 46 F.2 Cables sizing calculation recommendation Annex G (informative) Terminations ..50 G.1 Methods of terminating cables .. G.2 Tensile strength test values .57 Annex H (