SIST EN 3475-604:2018
(Main)Aerospace series - Cables, electrical, aircraft use - Test methods - Part 604: Resistance to dry arc propagation
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
Relations
Overview - EN 3475-604:2018 (Resistance to dry arc propagation)
EN 3475-604:2018 is a CEN aerospace test method that evaluates the behaviour of electrical cable insulation when an electrical arc is initiated and maintained by two powered cables abrading against an aluminium blade. Intended primarily for aircraft cable qualification, the standard reproduces service‑representative arc‑failure conditions (arc‑tracking and propagation to the electrical origin) under controlled laboratory conditions. The procedure is used together with EN 3475-100 (general test methods).
Key topics and technical requirements
- Test objective: Assess insulation aptitude to track and to propagate an electric arc between cables and/or to conductive structure.
- Network voltages: Originally defined for 115 Vac (400 Hz); test conditions for 230 Vac (400 Hz) are also given but, unless otherwise specified, 115 Vac is the default.
- Specimen configuration: Seven 0.5 m cable lengths laid up in a six‑around‑one bundle; cables in contact with the blade are identified (A1, B1).
- Mechanical abrasion: Oscillating aluminium blade (material T6061‑T6) with a minimum 15 mm stroke at (8 ± 2) Hz and a downward force of (2.5 ± 0.1) N. Blade is earthed to generator neutral.
- Electrical conditions: Six levels of prospective fault current are specified for relevant cable sizes. Typical cable sizes to be assessed include 002, 006 and 020 unless otherwise defined in product standards.
- Sampling and reproducibility: For each fault current level, three samples are tested (18 samples per cable size for six current levels).
- Safety and instrumentation: Tests are destructive and hazardous - video recording, transparent enclosure, automatic blade removal and power‑down on open circuit, and appropriate generator/breaker arrangements are required.
- Post‑test checks: Visual damage recording (char length, tracking path). For 115 Vac, if tracking is evident, a voltage proof (immersion) test per EN 3475‑302 may be applied to affected cores.
Applications - who uses this standard
- Aerospace OEMs and tier‑1 suppliers for cable qualification and design verification.
- Cable manufacturers to demonstrate insulation resistance to arc‑tracking and propagation.
- Test laboratories and certification bodies performing acceptance testing for aircraft electrical harnesses.
- Design and safety engineers assessing mitigation measures (insulation materials, routing, circuit protection) and compliance with aircraft product specifications.
Practical value and outcomes
- Confirms whether insulation formulations and cable constructions resist arc initiation, tracking and propagation under realistic abrasion‑induced fault conditions.
- Informs cable selection, harness design, circuit‑breaker ratings and protective strategies to reduce in‑service arcing risk.
- Provides repeatable, standardized evidence for certification dossiers and product specifications.
Related standards
- EN 3475-100 - General test methods (mandatory companion standard)
- EN 3475-302 - Voltage proof (immersion) test referenced for 115 Vac tracking verification
- EN 2350, EN 3197 - Related electrical installation and circuit‑breaker guidance
Keywords: EN 3475-604:2018, resistance to dry arc propagation, aerospace cables, arc tracking, cable insulation test, 115 Vac, 230 Vac, prospective fault current.
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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Frequently Asked Questions
SIST EN 3475-604:2018 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Cables, electrical, aircraft use - Test methods - Part 604: Resistance to dry arc propagation". This standard covers: 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.
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.
SIST EN 3475-604:2018 is classified under the following ICS (International Classification for Standards) categories: 29.060.20 - Cables; 49.060 - Aerospace electric equipment and systems. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 3475-604:2018 has the following relationships with other standards: It is inter standard links to SIST EN 3475-604:2010, oSIST prEN 3475-604:2024, SIST EN 3475-604:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN 3475-604:2018 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 SIST standards.
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