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
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
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.