EN 3475-604:2018

Aerospace series - Cables, electrical, aircraft use - Test methods - Part 604: Resistance to dry arc propagation

This European standard specifies a method for appraising the behaviour of cable insulation when an electric arc is initiated and maintained by two powered cables rubbing against a blade.
This European Standard shall be used together with EN 3475 100.
The primary aim of this test is:
—   to produce, in a controlled fashion, continuous failure effects which are representative of those which may occur in service when a typical cable bundle is damaged by abrasion such that electrical arcing occurs, both between cables and between cables and conductive structure, and
—   to examine the aptitude of the insulation to track, to propagate electric arc to the electrical origin.
Originally defined for 115 Vac network, this test also proposes conditions for 230 Vac network. Unless otherwise specified in product standard, only 115 Vac conditions shall be satisfied.
Six levels of prospective fault current have been specified for concerned cable sizes (see Clause 7). It is generally agreed that larger sizes need not be assessed since the short-circuit phenomenon becomes dominant at low line impedances.
Unless otherwise specified in the technical/product standard sizes 002, 006 and 020 cable shall be assessed.

Luft- und Raumfahrt - Elektrische Leitungen für Luftfahrtverwendung - Prüfverfahren - Teil 604: Lichtbogenfestigkeit, trocken

Diese Europäische Norm legt ein Verfahren zur Beurteilung des Verhaltens der Isolierung einer Leitung gegenüber einem elektrischen Lichtbogen fest, der durch eine Verunreinigungsflüssigkeit entlang der Ober-fläche der Isolierung erzeugt und aufrechterhalten wird.
Diese Europäische Norm ist in Verbindung mit EN 3475-100 anzuwenden.
Der Hauptzweck dieser Prüfung besteht darin,
- auf geregelte Weise kontinuierliche Fehlereffekte zu erzeugen, die repräsentativ sind für solche, wie sie im Betrieb auftreten können, wenn ein typisches Leitungsbündel beschädigt und einer Verunreinigung durch wässrige Flüssigkeit ausgesetzt wird. Der elektrische Lichtbogen entsteht entlang der Oberfläche der Isolierung zwischen beschädigten Stellen an benachbarten Leitungen, und
- die Eignung der Isolierung dahingehend zu untersuchen, die Fortpflanzung des elektrischen Lichtbogens zum elektrischen Ausgangspunkt zurückzuverfolgen.
Ursprünglich für das 115-V-Wechselspannung-Netz festgelegt, deckt diese Prüfung auch Bedingungen für das 230-V-Wechselspannung-Netz ab. Sofern nicht anders in der Produktnorm festgelegt, müssen nur die 115-V-Wechselspannung-Bedingungen erfüllt werden.
Sechs (6) voraussichtliche Fehlerstromwerte wurden für die betreffenden Leitungsgrößen (siehe Ab-schnitt 7) festgelegt. Es wurde vereinbart, dass Größen, die größer als 051 sind, nicht bewertet werden, da das Kurzschlussphänomen bei niedrigen Leitungsimpedanzen vorherrscht.
Sofern nicht anders in den technischen Normen/Produktnormen festgelegt, sind Leitungen der Größen 002, 006 und 020 zu bewerten.

Série aérospatiale - Câbles électriques à usage aéronautique - Méthodes d’essais - Partie 604 : Résistance à l'amorçage et à la propagation d'arc électrique, essai à sec

Aeronavtika - Električni kabli za uporabo v zračnih plovilih - Preskusne metode - 604. del: Odpornost proti električnemu obloku v suhih razmerah

General Information

• Status: Published
• Publication Date: 09-Jan-2018
• Withdrawal Date: 30-Jul-2018
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 2/S 2 - Cables & Stripping Tools
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 10-Jan-2018
• Completion Date: 10-Jan-2018
• Ref Project: SIST EN 3475-604:2018 - Aerospace series - Cables, electrical, aircraft use - Test methods - Part 604: Resistance to dry arc propagation

Relations

• Replaces: EN 3475-604:2010 - Aerospace series - Cables, electrical, aircraft use - Test methods - Part 604: Resistance to dry arc propagation
• Effective Date: 08-Jun-2022
• Revised: prEN 3475-604 - Aerospace series - Cables, electrical, aircraft use - Test methods - Part 604: Resistance to dry arc propagation
• Effective Date: 09-Jul-2024

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Elektrische Leitungen für Luftfahrtverwendung - Prüfverfahren - Teil 604: Lichtbogenfestigkeit, trockenSérie aérospatiale - Câbles électriques à usage aéronautique - Méthodes d’essais - Partie 604 : Résistance à l'amorçage et à la propagation d'arc électrique, essai à secAerospace series - Cables, electrical, aircraft use - Test methods - Part 604: Resistance to dry arc propagation49.060Aerospace electric equipment and systems29.060.20KabliCablesICS:Ta slovenski standard je istoveten z:EN 3475-604:2018SIST EN 3475-604:2018en,fr,de01-marec-2018SIST EN 3475-604:2018SLOVENSKI
STANDARDSIST EN 3475-604:20101DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3475-604
January
t r s z ICS
v {ä r x r Supersedes EN
u v y wæ x r vã t r s rEnglish Version
Aerospace series æ Cablesá electricalá aircraft use æ Test methods æ Part
x r vã Resistance to dry arc propagation Série aérospatiale æ Câbles électriques à usage aéronautique æ Méthodes d 5essais æ Partie
x r v ã Résistance à l 5amorçage et à la propagation d 5arc électriqueá essai à sec
Luftæ und Raumfahrt æ Elektrische Leitungen für Luftfahrtverwendung æ Prüfverfahren æ Teil
x r vã Lichtbogenfestigkeitá trocken This European Standard was approved by CEN on
t z August
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:
Avenue Marnix 17,
B-1000 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
u v y wæ x r vã t r s z ESIST EN 3475-604:2018

to the electrical origin. Originally defined for 115 Vac network, this test also proposes conditions for 230 Vac network. Unless otherwise specified in product standard, only 115 Vac conditions shall be satisfied. Six (6) levels of prospective fault current have been specified for concerned cable sizes (see Clause 7). It is generally agreed that larger sizes need not be assessed since the short-circuit phenomenon becomes dominant at low line impedances. Unless otherwise specified in the technical/product standard sizes 002, 006 and 020 cable shall be assessed. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2350, Aerospace series — Circuit breakers — Technical specification EN 2702, Aerospace series — Aluminium alloy AL-P6061 — T6 or T62 — Drawn or extruded bar and section — a or D ≤ 200 mm EN 3197, Aerospace series — Design and installation of aircraft electrical and optical interconnection systems EN 3475-100, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 100: General EN 3475-302, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 302: Voltage proof test A-A-52083, Tape, lacing and tying, glass 1) 3 Specimen requirements Cables to be tested shall be of traceable origin and shall have passed the high voltage dielectric test defined in the product standard.
1) Published by: Department of Defense Industrial Supply Center, ATTN: DISC-BBEE, 700 Robbins Avenue, Philadelphia, PA 19111-5096 – USA. SIST EN 3475-604:2018

Key 1 Original position 2 Final position A1-A2 : Phase A B1-B2 : Phase B C1-C2 : Phase C N1-N2 : Inactive cables connected to earth Figure 1 — Specimen configuration
They shall have trip characteristics in accordance with EN 2350 or as required in the product specification. NOTE 1 Reference of circuit breakers used shall be recorded. NOTE 2 In particular case, others ratings of thermal breaker protection could be employed in accordance with aircraft manufacturer rules. d) The electrical power source shall be appropriately protected and it shall be established that no combination of test circuit events would activate this protection. e) The ballast resistors shall be non-inductive and of appropriate powe
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