EN 50306-4:2020
(Main)Railway applications - Railway rolling stock cables having special fire performance - Thin wall - Part 4: Multicore and multipair screened or not screened sheathed cables
Railway applications - Railway rolling stock cables having special fire performance - Thin wall - Part 4: Multicore and multipair screened or not screened sheathed cables
This document specifies requirements for, and constructions and dimensions of, multicore and multipair cables rated voltage U0/U: 300/500 V, of the following types: - unscreened, sheathed for either exposed or protected wiring (0,5 mm2 to 2,5 mm2, number of cores from 2 to 48); - screened, sheathed for either exposed or protected wiring (0,5 mm2 to 2,5 mm2, number of cores from 2 to 8); - unscreened, sheathed for either exposed or protected wiring (0,5 mm2 to 1,5 mm2, number of screened pairs of cores from 2 to 7). - screened, sheathed for either exposed or protected wiring (0,5 mm2 to 1,5 mm2, number of unscreened pairs of cores from 2 to 7). All cables have stranded tinned copper conductors, halogen-free, thin wall thickness insulation and standard wall thickness sheath. Cable types are specified for use in exposed situations (Class E), and for protected situations (Class P). They are for use in railway rolling stock as fixed wiring or wiring where limited flexing in operation is encountered. These cables are rated for occasional thermal stresses causing ageing equivalent to continuous operational life at a temperature of 90 °C. For standard cables this is determined by the acceptance test defined in EN 50305, using accelerated long-term (5 000 h) thermal ageing indicating a 110 °C/20 000 h temperature index. If the customer were to require lifetime predictions this would be demonstrated based on the temperature index of the product as supplied by the manufacturer. The maximum temperature for short circuit conditions is 160 °C based on duration of 5 s. Under fire conditions the cables exhibit special performance characteristics in respect of maximum permissible flame propagation (flame spread) and maximum permissible emission of smoke and toxic gases. These requirements are specified to permit the cables to satisfy Hazard Level 3 of EN 45545 1 and EN 45545 2. EN 50306 4:2020 is expected to be used in conjunction with EN 50306-1:2020, General requirements, EN 50306-2:2020, Single core cables, and EN 50306-3:2020, Single core and multicore cables.
Bahnanwendungen - Kabel und Leitungen für Schienenfahrzeuge mit verbessertem Verhalten im Brandfall - Reduzierte Isolierwanddicken - Teil 4: Mehradrige und mehrpaarige Leitungen
Applications ferroviaires - Câbles pour matériel roulant ferroviaire ayant des performances particulières de comportement au feu - Isolation mince - Partie 4: Câbles multiconducteurs et multipaires gainés blindés ou non blindés
Le présent document définit les exigences de construction et dimensionnelles des câbles multiconducteurs et multipaires, de tension assignée U0/U = 300 V/500 V, des types suivants: - câbles gainés non blindés pour câblage exposé ou protégé (section de 0,5 mm2 à 2,5 mm2, 2 à 48 conducteurs); - câbles gainés blindés pour câblage exposé ou protégé (section de 0,5 mm2 à 2,5 mm2, 2 à 8 conducteurs); - câbles gainés non blindés pour câblage exposé ou protégé (section de 0,5 mm2 à 1,5 mm2, 2 à 7 paires de conducteurs blindés). - câbles gainés blindés pour câblage exposé ou protégé (section de 0,5 mm2 à 1,5 mm2, 2 à 7 paires de conducteurs non blindés). Tous les câbles sont constitués d'âmes câblées en cuivre étamé sous enveloppe isolante et gaine sans halogènes d'épaisseur mince. Ces types de câbles sont spécifiés pour les situations exposées (classe E) et pour les situations protégées (classe P). Ils sont destinés aux câblages fixes, ou aux câblages dont les flexions en service sont limitées, dans le matériel roulant ferroviaire. Ces câbles sont conçus pour résister à des contraintes thermiques occasionnelles provoquant un vieillissement thermique équivalent à celui résultant d’un fonctionnement continu à 90 °C. Pour les câbles normalisés, cette température est déterminée par l’essai d’acceptation décrit dans l’EN 50305, qui consiste à appliquer un vieillissement thermique accéléré de longue durée (5 000 h) indiquant un indice de température de 110 °C/20 000 h. Si le client exigeait des prédictions de durée de vie, ces prédictions seraient fondées sur l’indice de température du produit tel que fourni par le fabricant. La température maximale en cas de court-circuit est de 160 °C pour une durée de 5 s. Lorsqu'ils sont soumis au feu, les câbles présentent des caractéristiques de performance particulières quant aux valeurs maximales admissibles relatives à la propagation de la flamme et l'émission de fumées et de gaz toxiques. Ces exigences permettent aux câbles de satisfaire au niveau de risque 3 de l’EN 45545-1 et de l’EN 45545-2. L’EN 50306 4:2020 est prévu pour être utilisé conjointement avec l’EN 50306 1:2020, Exigences générales, l’EN 50306-2:2020, Câbles monoconducteurs, et l’EN 50306 3:2020, Câbles monoconducteurs et multiconducteurs blindés avec gaine d’épaisseur mince.
Železniške naprave - Kabli v železniških vozilih s posebno požarno odpornostjo - Tanka stena - 4. del: Večžilni in večparni zaslonjeni in nezaslonjeni oplaščeni kabli
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2020
Nadomešča:
SIST EN 50306-4:2003
Železniške naprave - Kabli v železniških vozilih s posebno požarno odpornostjo -
Tanka stena - 4. del: Večžilni in večparni zaslonjeni in nezaslonjeni oplaščeni kabli
Railway applications - Railway rolling stock cables having special fire performance - Thin
wall - Part 4: Multicore and multipair screened or not screened sheathed cables
Bahnanwendungen - Kabel und Leitungen für Schienenfahrzeuge mit verbessertem
Verhalten im Brandfall - Reduzierte Isolierwanddicken - Teil 4: Mehradrige und
mehrpaarige Leitungen
Applications ferroviaires - Câbles pour matériel roulant ferroviaire ayant des
performances particulières de comportement au feu - Isolation mince - Partie 4: Câbles
multiconducteurs et multipaires gainés blindés ou non blindés
Ta slovenski standard je istoveten z: EN 50306-4:2020
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
29.060.20 Kabli Cables
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 50306-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2020
ICS 13.220.40; 29.060.20; 45.060.01 Supersedes EN 50306-4:2002 and all of its amendments
and corrigenda (if any)
English Version
Railway applications - Railway rolling stock cables having
special fire performance - Thin wall - Part 4: Multicore and
multipair screened or not screened sheathed cables
Applications ferroviaires - Câbles pour matériel roulant Bahnanwendungen - Kabel und Leitungen für
ferroviaire ayant des performances particulières de Schienenfahrzeuge mit verbessertem Verhalten im
comportement au feu - Isolation mince - Partie 4: Câbles Brandfall - Reduzierte Isolierwanddicken - Teil 4:
multiconducteurs et multipaires gainés blindés ou non Mehradrige und mehrpaarige Leitungen
blindés
This European Standard was approved by CENELEC on 2019-12-30. 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, 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,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50306-4:2020 E
Contents Page
European foreword .4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .7
4 Multicore cables - sheathed .7
4.1 General .7
4.2 Marking and code designation .7
4.2.1 Marking of cable .7
4.2.2 Code Designation .8
4.2.3 Marking on the insulation of cores .8
4.3 Rated voltage .8
4.4 Construction .8
4.4.1 Cores .8
4.4.2 Laying-up of cores .8
4.4.3 Sheath .8
5 Tests . 10
5.1 Definitions relating to tests . 10
5.2 Voltage test on cable . 10
5.3 Tests at low temperature . 10
5.4 Ozone resistance of sheath . 11
5.5 Compatibility . 11
5.6 Fire performance . 12
6 Multicore cables - screened and sheathed . 13
6.1 General . 13
6.2 Designation, marking and coding . 13
6.2.1 Marking of cable . 13
6.2.2 Marking on the insulation of cores . 14
6.3 Rated voltage . 14
6.4 Construction . 14
6.4.1 Cores . 14
6.4.2 Laying-up of cores . 14
6.4.3 Metallic braid screening . 14
6.4.4 Sheath . 15
7 Tests . 16
7.1 Definitions relating to tests . 16
7.2 Voltage test on cable . 16
7.3 Spark test on the sheath . 17
7.4 Tests at low temperature . 17
7.5 Ozone resistance . 17
7.6 Fire performance . 18
8 Multipair cables - individually screened and sheathed and with an overall sheath. 19
8.1 General . 19
8.2 Designation, marking and coding . 19
8.2.1 Marking of the cable . 19
8.2.2 Marking on the insulation of cores . 20
8.2.3 Marking on the sheath of the pair . 20
8.3 Rated voltage . 20
8.4 Construction . 20
8.4.1 Pairs . 20
8.4.2 Laying-up of pairs . 20
9 Tests . 21
9.1 Definitions relating to tests . 21
9.2 Voltage test . 22
10 Multipair cables – general screened and sheathed . 23
10.1 General . 23
10.2 Designation, marking and coding . 23
10.2.1 Marking of cable . 23
10.2.2 Marking on the insulation of cores . 24
10.3 Rated voltage . 24
10.4 Construction . 24
10.4.1 Pairs . 24
10.4.2 Laying-up of pairs . 24
10.4.3 Metallic braid screening . 24
10.4.4 Outer sheath of the cable . 25
11 Tests . 26
11.1 Definitions relating to tests . 26
11.2 Voltage test - core to screen. 26
Annex A (informative) Guidance on selection of cables for type approval . 29
Bibliography . 30
European foreword
This document (EN 50306-4:2020) has been prepared by CLC/TC 20, “Electric cables.
The following dates are fixed:
• latest date by which this document has (dop) 2020-12-30
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2022-12-30
standards conflicting with this document
have to be withdrawn
This document supersedes EN 50306-4:2002 and all of its amendments and corrigenda (if any).
This edition includes the following significant technical changes with respect to the previous edition:
— The documents have been updated to reflect the changes in the test standard EN 50305;
— The range of the conductor cross sections has been extended;
— The reference to cited standards (e.g. EN 60811 series) has been updated.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Introduction
The EN 50306 series covers a range of sheathed and un
...
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