Aerospace series - Cable, electrical, fire resistant - Technical specification

This document specifies the required characteristics and test procedures for fire resistant or fire-proof electrical cables for use in aircraft electrical systems. These cables should also maintain a specific surface resistance when they are subjected to a flame of 1 100 °C after 5 minutes (fire resistant) or 15 minutes (fire-proof) exposure.
The insulation of these cables is designed to withstand aircraft voltages at a frequency not exceeding 2 000 Hz. Unless specified by individual product standards the maximum demonstrated ac voltage of rating of these cables is 115 V rms (phase to neutral) and 200 V rms (phase to phase) and a long term temperature of up to 260 °C (ambient temperature plus temperature rise in conductor).

Luft- und Raumfahrt - Elektrische Leitungen, feuerbeständig - Technische Lieferbedingungen

Dieses Dokument legt die Anforderungen und Prüfverfahren für feuerbeständige oder feuerfeste elektrische Leitungen zur Verwendung im elektrischen Bordnetz von Luftfahrzeugen fest. Diese Leitungen sollten außerdem bei Belastung durch Flammen mit 1 100 °C nach 5 Minuten (feuerbeständig) oder 15 Minuten (feuerfest) einen spezifischen Oberflächenwiderstand aufrechthalten.
Die Isolierung dieser Leitungen ist für Flugzeugspannungen mit einer Frequenz bis 2 000 Hz ausgelegt. Falls nicht in den einzelnen Produktnormen festgelegt, beträgt die maximal nachgewiesene Nennwechselspan¬nung dieser Leitungen 115 V effektiv (Phase gegen Neutral) und 200 V effektiv (Phase gegen Phase) und die Dauertemperatur bis zu 260 °C (Umgebungstemperatur plus Temperaturanstieg im Leiter).

Série aérospatiale - Câbles électriques résistant au feu - Spécification technique

Le présent document spécifie les caractéristiques requises et les procédures d’essais pour les câbles électriques résistant au feu ou ignifugés, utilisés dans les systèmes électriques des aéronefs. Il convient que ces câbles conservent une résistance de surface spécifique lorsqu’ils sont soumis à une flamme de 1 100 °C après 5 minutes d’exposition (résistant au feu) ou après 15 minutes d’exposition (ignifugé).
L’isolation de ces câbles est conçue pour supporter les tensions des aéronefs à une fréquence n’excédant pas 2 000 Hz. Sauf spécification contraire dans la norme de produit, la tension alternative nominale maximale démontrée de ces câbles est de 115 V rms (phase à neutre) et de 200 V rms (phase à phase), et la température à long terme jusqu’à 260 °C (température ambiante plus augmentation de la température dans le conducteur).

Aeronavtika - Električni ognjevzdržni kabli - Tehnična specifikacija

Ta dokument določa potrebne značilnosti in preskusne postopke za ognjevzdržne ali negorljive električne kable za uporabo v električnih sistemih letal. Kadar so izpostavljeni plamenu temperature 1100 °C, naj bi ti kabli po 5 minutah (ognjevzdržni) ali 15 minutah (negorljivi) izpostavljenosti ohranili tudi določeno površinsko odpornost.
Izolacija teh kablov je zasnovana tako, da prenese napetosti letala pri frekvenci do 2000 Hz. Največja uporabljena napetost pri ocenjevanju teh kablov je AC 115 V RMS (za fazno napetost) in 200 V RMS (za medfazno napetost) ter dolgoročna temperatura do 260 °C (sobna temperatura plus zvišanje temperature v prevodniku), razen če standardi za posamezne proizvode določajo drugače.

General Information

Status
Published
Publication Date
15-May-2018
Technical Committee
Drafting Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
16-May-2018
Completion Date
16-May-2018

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.LMDLuft- und Raumfahrt - Elektrische Leitungen, feuerbeständig - Technische LieferbedingungenSérie aérospatiale - Câbles électriques résistant au feu - Spécification techniqueAerospace series - Cable, electrical, fire resistant - Technical specification49.060Aerospace electric equipment and systems13.220.50Požarna odpornost gradbenih materialov in elementovFire-resistance of building materials and elementsICS:Ta slovenski standard je istoveten z:EN 2234:2018SIST EN 2234:2018en,fr,de01-julij-2018SIST EN 2234:2018SLOVENSKI

STANDARDSIST EN 2234:20121DGRPHãþD
SIST EN 2234:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 2234
May
t r s z ICS
v {ä r x r Supersedes EN
t t u vã t r s tEnglish Version

Aerospace series æ Cableá electricalá fire resistant æ Technical specification Série aérospatiale æ Câbles électriques résistant au feu æSpécification technique

Luftæ und Raumfahrt æ Elektrische Leitungená feuerbeständig æ Technische Lieferbedingungen This European Standard was approved by CEN on

x November
t r s yä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels

t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

t t u vã t r s z ESIST EN 2234:2018
EN 2234:2018 (E) 2 Contents

Page European foreword ...................................................................................................................................................... 3 1 Scope .................................................................................................................................................................... 4 2 Normative references .................................................................................................................................... 4 3 Terms, definitions and symbols ................................................................................................................. 4 4 Materials and construction ......................................................................................................................... 4 5 Required characteristics .............................................................................................................................. 6 6 Tests method .................................................................................................................................................... 6 7 Quality assurance ............................................................................................................................................ 9 8 Identification marking ................................................................................................................................ 11 9 Packaging, labelling and delivery lengths ............................................................................................ 11

SIST EN 2234:2018

EN 2234:2018 (E) 3 European foreword This document (EN 2234:2018) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2018, and conflicting national standards shall be withdrawn at the latest by November 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 2234:2012. According to the CEN CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 2234:2018

EN 2234:2018 (E) 4 1 Scope This document specifies the required characteristics and test procedures for fire resistant or fire-proof electrical cables for use in aircraft electrical systems. These cables should also maintain a specific surface resistance when they are subjected to a flame of 1 100 °C after 5 minutes (fire resistant) or 15 minutes (fire-proof) exposure.

The insulation of these cables is designed to withstand aircraft voltages at a frequency not exceeding 2 000 Hz. Unless specified by individual product standards the maximum demonstrated ac voltage of rating of these cables is 115 V rms (phase to neutral) and 200 V rms (phase to phase) and a long term temperature of up to 260 °C (ambient temperature plus temperature rise in conductor). 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 3475-100 (all parts), Aerospace series — Cables, electrical, aircraft use — Test methods — Part 100: General EN 3838, Aerospace series — Requirements and tests on user-applied markings on aircraft electrical cables

EN 9102, Aerospace series — Quality systems — First article inspection EN 9133, Aerospace series — Quality Management Systems — Qualification Procedure for Aerospace Standard Products ISO 2574, Aircraft — Electrical cables — Identification marking ISO 8815, Aircraft — Electrical cables and cable harnesses — Vocabulary IEC 60028:1925, International standard of resistance for copper 3 Terms, definitions and symbols For the purposes of this document, the terms, definitions and symbols given in ISO 8815 and EN 3475-100 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses:

IEC Electropedia: available at http://www.electropedia.org/
ISO Online browsing platform: available at http://www.iso.org/obp

4 Materials and construction 4.1 Conductors 4.1.1 Materials The individual strands used for the conductors shall be cylindrical and shall be:  of nickel clad copper alloy for nominal cross section of 0,25 mm2 and 0,4 mm2;

 of nickel clad copper for nominal sections ≥ 0,6 mm2. SIST EN 2234:2018

EN 2234:2018 (E) 5 The copper shall meet the requirements of IEC 60028 and the copper alloy the requirements of this standard. The nickel shall not represent less than 27 % of the total mass of the individual strand. Individual strands shall show the following minimum breaking strength:  280 N/mm2 for nickel clad copper;  315 N/mm2 for nickel clad copper alloy. 4.1.2 Lay length Up to 9 mm2 cross section inclusive (code 090), concentric or unilay conductors are used. The lay for the stranded conductor, checked over the outside layer of a test piece 1 m long, shall be between 8 times and 16 times the maximum diameter of this conductor. For sectional areas between 14 mm2 and 68 mm2 (codes 140 to 680), the conductor comprises concentric or bunched conductors twisted together. The lay of the strands for the basic concentric or bunched conductors shall not exceed 30 times the diameter of the concentric or bunched conductor in question. The lay for concentric (or bunched) conductors, measured over the outer layer of the conductor, shall be between 8 times and 16 times the maximum conductor diameter. In all cases the lay of the outer layer shall be left-hand. 4.1.3 Joints The conductors shall be free from any joints. Each strand comprising the conductors may, however, include soldered or brazed joints. For strands with a diameter of 0,25 mm or greater, butt joints shall be used. The distance between two joints in individual strands shall exceed 3 m, measured between different strands. 4.1.4 Compaction Compaction of the causing deformation of the strands or damage to the plating is not permitted. 4.2 Construction Finished cables The insulation shall be of a material, which takes on the circular shape of the conductor throughout its length. It shall closely cover the conductor without adhering to it, so that it reduces the corona effect and the risk of blistering and heat corrosion due to voids and gaseous discharges. The insulation shall be neither too tight nor too loose, so as to provide satisfactory mechanical characteristics and be easily removable using commercially available tools. (See Table 1, § 6.45). The protective sheath shall be of a material, which takes on the round sh

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