EN 50306-3:2020
(Main)Railway applications - Railway rolling stock cables having special fire performance - Thin wall - Part 3: Single core and multicore cables screened and thin wall sheathed
Railway applications - Railway rolling stock cables having special fire performance - Thin wall - Part 3: Single core and multicore cables screened and thin wall sheathed
This document specifies requirements for, and constructions and dimensions of, multicore cables, rated voltage U0/ U = 300/500 V, of the following type: Screened (0,5 mm2 to 2,5 mm2, number of cores from 1 to 8). All cables have stranded tinned copper conductors, and thin wall thickness, halogen-free, insulation and sheath. 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 3:2020 is expected to be used in conjunction with EN 50306 1:2020, General Requirements, and EN 50306 2:2020, Single core cables.
Bahnanwendungen - Kabel und Leitungen für Schienenfahrzeuge mit verbessertem Verhalten im Brandfall - Reduzierte Isolierwanddicken - Teil 3: Ein- und mehradrige Kabel und Leitungen geschirmt mit reduzierten Mantelwanddicken
Applications ferroviaires - Câbles pour matériel roulant ferroviaire ayant des performances particulières de comportement au feu - Isolation mince - Partie 3 : Câbles monoconducteurs et multiconducteurs blindés avec gaine d'épaisseur mince
Le présent document définit les exigences constructives et dimensionnelles des câbles multiconducteurs, de tension assignée U0/U = 300 V/500 V, du type suivant: Câble blindé (0,5 mm2 à 2,5 mm2, 1 à 8 conducteurs). Tous les câbles sont constitués d'âmes câblées en cuivre étamé, sous enveloppe isolante et gaine sans halogènes d'épaisseur mince. 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 admissible en cas de court-circuit est de 160 °C pendant 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 3:2020 est prévu pour être utilisé conjointement avec l’EN 50306 1:2020, Exigences générales, et avec l’EN 50306 2:2020, Câbles monoconducteurs.
Železniške naprave - Kabli v železniških vozilih s posebno požarno odpornostjo - Tanka stena - 3. del: Enožilni in večžilni kabli, zaslonjeni in tanko oplaščeni
General Information
Relations
Overview
EN 50306-3:2020 - published by CLC - specifies construction, dimensions and test requirements for screened thin‑wall single‑core and multicore railway rolling stock cables with rated voltage U0/U = 300/500 V. It covers screened cables with conductor cross‑sections from 0.5 mm² to 2.5 mm², with 1 to 8 cores, stranded tinned copper conductors and halogen‑free thin wall insulation and sheath. These cables are intended for fixed wiring or applications with limited flexing on railway vehicles and are designed for enhanced fire performance (to achieve Hazard Level 3 of EN 45545‑1/2).
Key topics and technical requirements
- Cable types and ratings
- Screened single‑ and multicore cables, conductor sizes 0.5–2.5 mm², 1–8 cores.
- Rated voltage 300/500 V (U0/U).
- Materials and construction
- Stranded tinned copper conductors.
- Halogen‑free thin wall insulation and S2 sheath (extruded, black by default).
- Multicore laying: twisted cores with lay pitch ≤ 20 × diameter.
- Screening
- Metallic braid of tinned annealed copper wires.
- Wire diameter ≥ 0.10 mm; filling factor ≥ 0.55.
- Lay angle between 15° and 35°; splice limitation: ≤ one splice per spindle per 100 mm.
- Thermal and ageing performance
- Rated for occasional thermal stresses equivalent to continuous operation at 90 °C.
- Acceptance ageing test per EN 50305: accelerated long‑term (5 000 h) indicating a 110 °C / 20 000 h temperature index.
- Manufacturer‑supplied temperature index used for customer lifetime predictions.
- Short‑circuit maximum temperature 160 °C for 5 s.
- Fire performance
- Requirements limit flame propagation, smoke density and toxic gas emissions, enabling compliance with EN 45545 HL3.
- Marking
- Mark with manufacturer, EN reference, voltage, conductor size, code designation (HL / temperature / oil/fuel resistance), screening (S) and conductor temp rating.
Applications and users
- Practical uses:
- Fixed wiring and limited‑flex cabling in railway rolling stock (passenger trains, trams, metros).
- Systems requiring high fire safety (escape routes, passenger compartments, control circuits).
- Who uses this standard:
- Cable manufacturers (design, production and type approval).
- Rolling stock designers / OEMs for specification and procurement.
- Compliance engineers, testing laboratories and certification bodies performing EN 50306 / EN 50305 tests.
- Maintenance and installation teams referencing installation rules (see EN 50343).
Related standards
- EN 50306‑1:2020 - General requirements (series introduction)
- EN 50306‑2:2020 - Single core cables
- EN 50305:2020 - Test methods for special fire performance cables
- EN 45545‑1 / EN 45545‑2 - Fire protection on railway vehicles (Hazard Levels)
- EN 50355, EN 50343, EN 60811, EN 60332‑1‑2, EN 61034‑2
Keywords: EN 50306-3:2020, railway rolling stock cables, thin wall screened cables, halogen-free, fire performance, EN 45545 HL3, cable screening, temperature index.
Frequently Asked Questions
EN 50306-3:2020 is a standard published by CLC. Its full title is "Railway applications - Railway rolling stock cables having special fire performance - Thin wall - Part 3: Single core and multicore cables screened and thin wall sheathed". This standard covers: This document specifies requirements for, and constructions and dimensions of, multicore cables, rated voltage U0/ U = 300/500 V, of the following type: Screened (0,5 mm2 to 2,5 mm2, number of cores from 1 to 8). All cables have stranded tinned copper conductors, and thin wall thickness, halogen-free, insulation and sheath. 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 3:2020 is expected to be used in conjunction with EN 50306 1:2020, General Requirements, and EN 50306 2:2020, Single core cables.
This document specifies requirements for, and constructions and dimensions of, multicore cables, rated voltage U0/ U = 300/500 V, of the following type: Screened (0,5 mm2 to 2,5 mm2, number of cores from 1 to 8). All cables have stranded tinned copper conductors, and thin wall thickness, halogen-free, insulation and sheath. 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 3:2020 is expected to be used in conjunction with EN 50306 1:2020, General Requirements, and EN 50306 2:2020, Single core cables.
EN 50306-3:2020 is classified under the following ICS (International Classification for Standards) categories: 13.220.40 - Ignitability and burning behaviour of materials and products; 29.060.20 - Cables; 45.060.01 - Railway rolling stock in general. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 50306-3:2020 has the following relationships with other standards: It is inter standard links to EN 50306-3:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 50306-3:2020 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CLC standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2020
Nadomešča:
SIST EN 50306-3:2003
Železniške naprave - Kabli v železniških vozilih s posebno požarno odpornostjo -
Tanka stena - 3. del: Enožilni in večžilni kabli, zaslonjeni in tanko oplaščeni
Railway applications - Railway rolling stock cables having special fire performance - Thin
wall - Part 3: Single core and multicore cables screened and thin wall sheathed
Bahnanwendungen - Kabel und Leitungen für Schienenfahrzeuge mit verbessertem
Verhalten im Brandfall - Reduzierte Isolierwanddicken - Teil 3: Ein- und mehradrige
Kabel und Leitungen geschirmt mit reduzierten Mantelwanddicken
Applications ferroviaires - Câbles pour matériel roulant ferroviaire ayant des
performances particulières de comportement au feu - Isolation mince - Partie 3:
Conducteurs et câbles blindés (paires, tierces et quartes) avec gaine d'épaisseur mince
Ta slovenski standard je istoveten z: EN 50306-3:2020
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 50306-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2020
ICS 13.220.40; 29.060.20; 45.060.01 Supersedes EN 50306-3:2002 and all of its amendments
and corrigenda (if any)
English Version
Railway applications - Railway rolling stock cables having
special fire performance - Thin wall - Part 3: Single core and
multicore cables screened and thin wall sheathed
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 3 : Câbles Brandfall - Reduzierte Isolierwanddicken - Teil 3: Ein- und
monoconducteurs et multiconducteurs blindés avec gaine mehradrige Kabel und Leitungen geschirmt mit reduzierten
d'épaisseur mince Mantelwanddicken
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 50306-3:2020 E
Contents Page
European foreword .3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Single and multicore screened cables .6
4.1 General .6
4.2 Marking and code designation .6
4.2.1 Marking of cable .6
4.2.2 Code Designation .6
4.2.3 Marking on the insulation of cores for multi core cables .7
4.3 Rated voltage .7
4.4 Construction .7
4.4.1 Cores .7
4.4.2 Laying-up of cores in multicore cables .7
4.4.3 Metallic braid screening .7
4.4.4 Sheath .8
5 Tests .9
5.1 Definitions relating to tests .9
5.2 Voltage test .9
5.3 Voltage test on sheath .9
5.4 Spark test on the sheath .9
5.5 Water absorption of sheath . 10
5.6 Hot set test of sheath . 10
5.7 Ageing test of sheath . 10
5.8 Mineral oil resistance of sheath . 10
5.9 Fuel resistance of sheath . 11
5.10 Acid and alkali resistance of sheath . 11
5.11 Pressure test at high temperature . 12
5.12 Dynamic cut through . 12
5.13 Notch propagation of sheath . 12
5.14 Bending test at low temperature . 12
5.15 Abrasion resistance of sheath . 12
5.16 Ozone resistance . 12
5.17 Stress cracking test . 13
5.18 Fire performance tests . 13
Annex A (informative) Guidance on selection of cables for type approval . 16
Bibliography . 17
European foreword
This document (EN 50306-3:2020) 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 50306-3:2002 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 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 unsheathed cables with thin wall thickness
insulation and based on halogen free materials, for use in railway rolling stock. It is divided into four
parts.
Part 1: General requirements;
Part 2: Single core cables;
Part 3: Single core and multicore cables screened and thin wall sheathed;
Part 4: Multicore and multipair screened or not screened sheathed cables.
Special test methods referred to in the EN 50306 series are given in EN 50305. A guide to use is given
in EN 50355 and rules for installation are given in EN 50343.
EN 50306-1, General requirements, contains a more extensive introduction to EN 50306 series and
should be read in conjunction with this document.
1 Scope
This document specifies requirements for, and constructions and dimensions of, multicore cables, rated
voltage U0/ U = 300/500 V, of the following type:
2 2
Screened (0,5 mm to 2,5 mm , number of cores from 1 to 8).
All cables have stranded tinned copper conductors, and thin wall thickness, halogen-free, insulation and
sheath. 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.
and EN 50306-2:2020, Single core cables.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 45545-1, Railway applications - Fire protection on railway vehicles - Part 1: General
EN 60332-1-2, Tests on electric and optical fibre cables under fire conditions - Part 1-2: Test for vertical
flame propagation for a single insulated wire or cable - Procedure for 1 kW pre-mixed flame
EN 61034-2, Measurement of smoke density of cables burning under defined conditions - Part 2: Test
procedure and requirements
EN 50305:2020, Railway applications - Railway rolling stock cables having special fire performance -
Test methods
EN 50306-1:2020, Railway applications - Railway rolling stock cables having special fire performance -
Thin wall - Part 1: General requirements
EN 50306-2:2020, Railway applications - Railway rolling stock cables having special fire performance -
Thin wall - Part 2: Single core cables
EN 60811 (all parts), Electric and optical fibre cables - Test methods for non-metallic materials
EN 62230, Electric cables - Spark-test method
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISOOnline browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Single and multicore screened cables
4.1 General
The completed cable shall conform to the applicable general requirements given in EN 50306-1:2020
and to the specific requirements of this Part 3.
Conformity with the requirements shall be checked by inspection and by the tests given in Table 2.
4.2 Marking and code designation
4.2.1 Marking of cable
Cables shall be marked with the following:
— Manufacturer's name;
— EN reference;
— Voltage rating (U0);
— Conductor size;
— A code designation according for use of the cable (see 4.2.2);
— Screening (S);
— Conductor temperature rating
For example:
XYZ EN 50306-3 300 V 1x1,5 MM S 90
The marking shall conform to the requirements of EN 50306-1:2020, Clause 5.
4.2.2 Code Designation
The following letters shall be
...
SIST EN 50306-3:2020は、特に鉄道アプリケーションにおける薄型壁の車両用ケーブルに関する要求事項を詳細に規定しています。この標準は、定格電圧U0/U=300/500Vの多心ケーブルの構造と寸法を明確にし、1から8コアを持つ、遮蔽された断面積0.5 mm²から2.5 mm²のケーブル特性をカバーしています。 主な強みとして、SIST EN 50306-3:2020は、すべてのケーブルに使用されているつり合いの取れた錫メッキ銅導体と、ハロゲンフリーの絶縁体および被覆が整備されている点が挙げられます。これにより、鉄道車両の固定配線または制限された柔軟性で使用される配線に関して、安全性と信頼性が高まっています。 また、この標準に従ったケーブルは、90°Cでの継続的運用寿命と同等の経年劣化を引き起こす偶発的な熱ストレスに耐えうるように設計されています。短絡状態時の最大温度は、5秒間の持続で160°Cに設定されています。さらに、火災条件下では、最大許容炎拡散や有毒ガスおよび煙の放出に関する特別な性能特性が確認されており、EN 45545-1およびEN 45545-2の危険レベル3を満たすことが求められています。 SIST EN 50306-3:2020は、EN 50306-1:2020（一般要求事項）やEN 50306-2:2020（単心ケーブル）と組み合わせて使用されることが期待されており、その関連性も高いです。このため、鉄道車両向けのケーブルの安全性と性能を確保するための重要な基準となります。全体として、SIST EN 50306-3:2020は、鉄道運用における火災性能と信頼性を両立させるための優れた標準であると言えます。
SIST EN 50306-3:2020 표준은 철도 응용 분야에 있어 특별한 화재 성능을 가진 부품으로서의 얇은 벽의 멀티코어 및 단일 코어 케이블에 대한 요구사항을 명확하게 규정하고 있습니다. 이 문서의 범위는 정격 전압 U0/U = 300/500 V의 멀티코어 케이블에 대해 스크린이 있는 형태로, 0.5 mm²에서 2.5 mm²의 단면적을 가진 1부터 8개의 코어를 포함합니다. 이 표준의 강점은 첫째로, 모든 케이블이 스트랜드 형의 주석 도금 구리를 도체로 사용하고, 할로겐 프리 절연재 및 외피를 적용하여 화재 시의 성능을 강화했다는 점입니다. 둘째로, 이 케이블들은 고정 배선 또는 제한된 유연성을 가진 배선에 적합하며, 90 °C의 온도에서 발생하는 열 스트레스에 대한 저항력을 갖춰 지속적인 작동 수명에 필요한 노화 테스트를 EN 50305에 따라 수행할 수 있습니다. 또한, 이 표준은 EN 45545 1과 EN 45545 2에서 요구되는 위험 수준 3의 요구사항을 충족할 수 있는 화재 조건에서의 특정 성능 특성을 명시하고 있어, 안전성을 최우선으로 고려한 설계입니다. 짧은 회로 상태에서의 최대 온도는 160 °C로 설정되어 있으며, 이는 5초 동안의 내구성을 기반으로 합니다. SIST EN 50306-3:2020 표준은 EN 50306-1:2020 및 EN 50306-2:2020와 함께 사용될 것으로 기대되며, 이는 사용자에게 추가적인 일반 요구사항 및 단일 코어 케이블에 대한 명확한 지침을 제공합니다. 이 표준은 철도 차량의 전선 연결 안전성을 보장함으로써 철도 시스템의 전반적인 신뢰성을 높이는 데 기여합니다.
La norme EN 50306-3:2020 représente une avancée significative dans le domaine des applications ferroviaires, en se concentrant sur les câbles de matériel roulant ayant des performances spéciales en matière de feu. Ce document spécifie de manière claire les exigences, ainsi que les constructions et dimensions des câbles multicœur, qui sont essentiels pour assurer la sécurité en milieu ferroviaire. L’étendue de cette norme inclut des câbles à tension nominale U0/U = 300/500 V, avec des cœurs allant de 1 à 8, et une section transversale variant de 0,5 mm² à 2,5 mm². Les conducteurs en cuivre étamé stranded, ainsi que l’isolation et la gaine à faible épaisseur et sans halogène, garantissent une fiabilité accrue dans des environnements exigeants. L'utilisation de ces câbles est spécifiquement adaptée au matériel roulant, que ce soit pour le câblage fixe ou pour des applications où des flexions limitées se produisent pendant l'exploitation. Un des points forts de la norme EN 50306-3:2020 est sa capacité à gérer des conditions thermiques exceptionnelles, en permettant des exigences qui montrent une résistance aux stress thermiques occasionnels. Les tests d'acceptation basés sur l'âge thermique accéléré de 5 000 heures démontrent une robustesse nécessaire pour résister à des températures pouvant atteindre 90 °C de manière continue, et à 160 °C lors de courts-circuits. En matière de sécurité incendie, cette norme se démarque par son attention portée aux performances spéciales en cas d'incendie, en spécifiant les caractéristiques de propagation des flammes et d’émission de fumées et de gaz toxiques. Les exigences d’EN 45545 1 et 2, qui imposent des niveaux de risque, sont respectées, garantissant ainsi la sécurité des utilisateurs et des infrastructures. Dans un contexte où la sécurité et la fiabilité sont primordiales, le document SIST EN 50306-3:2020 s’avère donc être une norme incontournable pour les fabricants et les utilisateurs de câbles destinés aux applications ferroviaires. Sa mise en œuvre est attendue non seulement en tant qu'indispensable, mais également comme complément aux autres normes associées, EN 50306 1:2020 et EN 50306 2:2020.
The EN 50306-3:2020 standard provides robust specifications for railway rolling stock cables with special fire performance qualities, particularly focusing on thin wall multicore cables. The scope of this document is crucial for ensuring the safety and reliability of wiring in railway applications, detailing requirements for cables rated at U0/U = 300/500 V with a core range of 1 to 8, covering cross-sectional areas from 0.5 mm² to 2.5 mm². One of the primary strengths of EN 50306-3:2020 lies in its emphasis on fire safety performance. It outlines stringent criteria concerning maximum flame propagation and the emission of smoke and toxic gases, essential for achieving Hazard Level 3 compliance as defined by EN 45545 standards. This focus on fire performance is particularly relevant in the context of railway safety, where the durability of cables under thermal stress and fire conditions can significantly influence the overall safety of railway systems. The use of stranded tinned copper conductors and halogen-free insulation and sheath reflects a commitment to both performance and environmental considerations. The specification allows for the cables to endure thermal stresses, with a maximum operating temperature of 90 °C and a defined thermal ageing protocol that simulates long-term operational conditions. This ensures that manufacturers can guarantee cable integrity and performance over extended periods, providing end users with confidence in the durability of these components. Furthermore, EN 50306-3:2020 functions effectively in tandem with EN 50306-1:2020, the general requirements standard, and EN 50306-2:2020, which focuses on single core cables. This interconnectedness reinforces the standard's comprehensive nature, producing a cohesive framework that covers various cable configurations and their specific applications. In conclusion, the EN 50306-3:2020 standard represents a significant advancement in setting industry benchmarks for railway rolling stock cables, especially concerning fire performance and construction requirements. Its detailed specifications ensure that the cables are not only compliant but also aligned with the best practices in safety and operational efficiency, thereby maintaining the crucial standards expected in railway applications.
Die Norm EN 50306-3:2020 ist ein wesentlicher Bestandteil der europäischen Normierung für Schienenanwendungen, die spezifische Anforderungen an Kabel für Schienenfahrzeuge mit besonderer Feuerverhaltensweise behandelt. Durch ihre detaillierte Festlegung von Konstruktionen und Dimensionen für Mehraderkabel, die für Betriebsspannungen von 300/500 V ausgelegt sind, bietet die Norm eine umfassende Grundlage für die Herstellung und den Einsatz entsprechender Kabel im Schienenverkehr. Ein herausragendes Merkmal dieser Norm ist die Festlegung der technischen Spezifikationen für abgeschirmte Kabel mit einer Drahtquerschnittsgröße von 0,5 mm² bis 2,5 mm² und einer Stückzahl von 1 bis 8 Adern. Diese Kabel zeichnen sich durch ihre feine Wanddicke und halogenfreie Isolierung sowie Mantel aus, was nicht nur die Sicherheit erhöht, sondern auch die Umweltfreundlichkeit der verwendeten Materialien berücksichtigt. Die Norm gewährleistet damit eine hohe Zuverlässigkeit sowie Langlebigkeit, auch unter den extremen Bedingungen, die in Schienenfahrzeugen herrschen können. Die in der Norm festgelegten Anforderungen an die Temperaturbeständigkeit sind von zentraler Bedeutung. Sie stellen sicher, dass die Kabel gelegentliche thermische Beanspruchungen von bis zu 90 °C standhalten können und gleichzeitig für kurzzeitige Kurzschlussbedingungen mit einer maximalen Temperatur von 160 °C ausgelegt sind. Die Möglichkeit, die Lebensdauer der Kabel anhand eines Temperaturindex zu bewerten, ermöglicht es den Herstellern, den Anforderungen ihrer Kunden gerecht zu werden und zu zeigen, dass ihre Produkte langfristig zuverlässig sind. Zusätzlich bietet die Norm spezifische Leistungsmerkmale hinsichtlich der maximalen Flammenausbreitung und der maximalen Emission von Rauch und giftigen Gasen unter Brandbedingungen. Diese Anforderungen sind entscheidend, um den Hazard Level 3 der Normen EN 45545-1 und EN 45545-2 zu erfüllen, was die Sicherheit und den Schutz von Personen und Gütern im Schienenverkehr erheblich erhöht. Die EN 50306-3:2020 ist in Kombination mit EN 50306-1:2020, den allgemeinen Anforderungen, und EN 50306-2:2020, den Anforderungen für Einadrige Kabel, zu verwenden. Diese Integration stellt sicher, dass alle Aspekte der Kabelspezifikationen, von allgemeinen Voraussetzungen bis hin zu spezifischen Anforderungen, stringent berücksichtigt werden und somit ein durchgängiges Qualitätsmanagement im Bereich der Schienenfahrzeugverkabelung ermöglicht wird. Insgesamt bietet die EN 50306-3:2020 eine robuste und zuverlässige Grundlage für die Implementierung von Kabeln mit speziellen Feuerperformance in Schienenfahrzeugen und erfüllt somit die aktuellen Anforderungen an Sicherheit sowie Funktionalität in der Branche.
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...