EN 3475-601:2007
(Main)Aerospace series - Cables, electrical, aircraft use - Test methods - Part 601: Smoke density
Aerospace series - Cables, electrical, aircraft use - Test methods - Part 601: Smoke density
This test method is intended for determination of the specific optical density of smoke generated by electrical wire/cable insulation materials due to pyrolitic decomposition under the influence of radiant heat only or with simultaneous flame application.
It is used for evaluation of insulation materials of electrical wire/cable used in the interiors of aerospace vehicles but may be utilized in other applications as specified in applicable procurement documents.
This standard should be used to measure and describe the properties of products in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However results of this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.
Luft- und Raumfahrt - Elektrische Leitungen für Luftfahrzeuge - Prüfverfahren - Teil 601: Rauchdichte
Dieses Prüfverfahren soll bei der Bestimmung der spezifischen optischen Dichte von Rauch angewendet werden, der bei thermischer Zersetzung von Isolierwerkstoffen von Drähten/elektrischen Leitungen entweder nur unter Einwirkung von Strahlungswärme oder in Kombination mit Beflammung entsteht.
Das Prüfverfahren wird für die Bewertung von Isolierwerkstoffen von Drähten/elektrischen Leitungen angewendet, die im Inneren von Luftfahrzeugen verwendet werden, es kann aber auch bei anderen Anwendungen verwendet werden, wie in den entsprechenden Bestellunterlagen festgelegt.
Diese Norm sollte zur Messung und Beschreibung der Eigenschaften von Erzeugnissen angewendet werden, die unter kontrollierten Laborbedingungen Wärme und Beflammung ausgesetzt sind; sie sollte nicht für die Beschreibung oder Bewertung der Brandgefahr oder des Brandrisikos von Werkstoffen, Erzeugnissen oder Baugruppen bei realen Brandsituationen angewendet werden. Die Prüfergebnisse können jedoch möglicher¬weise als Elemente einer Bewertung des Brandrisikos verwendet werden, die alle Faktoren berücksichtigt, die eine Bewertung der Brandgefahr einer bestimmten Endanwendung nachhaltig beeinflussen.
Série aérospatiale - Câbles électriques à usage aéronautique - Méthodes d'essais - Partie 601: Densité de fumée
Aeronavtika - Električni kabli za uporabo v zračnih plovilih - Preskusne metode - 601. del: Gostota dima
General Information
- Status
- Published
- Publication Date
- 28-Aug-2007
- Withdrawal Date
- 28-Feb-2008
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 4 - Metallic
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 30-Jun-2017
- Completion Date
- 28-Jan-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 3475-601:2007 - Aerospace series: Cables, electrical, aircraft use - Test methods - Part 601: Smoke density is a CEN standard that specifies a laboratory method to measure the specific optical density (Ds) of smoke produced by electrical wire and cable insulation when subjected to radiant heat, with or without simultaneous flame application. The method quantifies smoke via reduction in light transmission in a controlled test chamber and is intended for evaluation of cable insulation used in aircraft interiors. Results support material selection and elements of fire risk assessment but are not a direct measure of real-world fire hazard.
Key topics and technical requirements
- Scope & purpose: Measurement of smoke density from pyrolitic decomposition of insulation materials under radiant heat (non-flaming) and flaming modes.
- Specific optical density (Ds): Dimensionless metric derived from measured light obscuration and a geometric factor; includes parameters Dm (maximum Ds) and tDm (time to Dm).
- Test chamber: Square-cornered enclosure with defined internal dimensions, sealed door and vents, pressure monitoring (manometer/pressure transducer), and pressure-equalization provisions.
- Radiant heat furnace: Provides a controlled heat flux of (25 ± 0.5) kW/m2; includes oven construction, coil heating element and flux gauge for calibration.
- Pilot burner: Six-tube straight-tip pilot burner with defined air/propane mix (air ~500 cm3/min, propane ~50 cm3/min at reference conditions) to establish flaming mode.
- Specimen holder & backing: Stainless steel frame and millboard backing to present a nominal exposed area (approx. 65 × 65 mm) and to collect drips.
- Photometric system: Vertical light path with incandescent source (brightness temperature ~2 200 ± 100 K), photomultiplier tube (S-4 response), and data recording capable of measuring transmittance to 1.0% with high accuracy.
- Procedure controls: Conditioning of specimens, apparatus checks, calibration (heat flux gauge), and reporting requirements are specified to ensure reproducibility.
- Limitations: Intended for laboratory characterization; results may be incorporated into broader fire risk assessments but do not alone represent actual fire performance.
Applications
- Material qualification and comparative testing of aerospace cable insulation for aircraft interiors.
- Supplier and procurement specifications where smoke density metrics are required.
- Component selection for cabin safety, avionics bays, and other interior systems where smoke generation is a concern.
- Input data for fire safety engineers conducting multi-factor fire risk assessments.
Who should use this standard
- Aerospace OEMs, cable and wire manufacturers, and suppliers developing and certifying cable insulation.
- Accredited test laboratories performing EN/aviation cable test methods.
- Procurement teams and safety engineers specifying material acceptance criteria for aircraft interiors.
Related standards
- Other parts of the EN 3475 series covering electrical cables and associated test methods (see EN 3475 series for complementary mechanical, flammability and electrical tests).
Keywords: EN 3475-601:2007, smoke density, specific optical density, aerospace cables, test methods, radiant heat, pilot burner, photometric system, cable insulation, fire risk assessment.
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Frequently Asked Questions
EN 3475-601:2007 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Cables, electrical, aircraft use - Test methods - Part 601: Smoke density". This standard covers: This test method is intended for determination of the specific optical density of smoke generated by electrical wire/cable insulation materials due to pyrolitic decomposition under the influence of radiant heat only or with simultaneous flame application. It is used for evaluation of insulation materials of electrical wire/cable used in the interiors of aerospace vehicles but may be utilized in other applications as specified in applicable procurement documents. This standard should be used to measure and describe the properties of products in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However results of this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.
This test method is intended for determination of the specific optical density of smoke generated by electrical wire/cable insulation materials due to pyrolitic decomposition under the influence of radiant heat only or with simultaneous flame application. It is used for evaluation of insulation materials of electrical wire/cable used in the interiors of aerospace vehicles but may be utilized in other applications as specified in applicable procurement documents. This standard should be used to measure and describe the properties of products in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However results of this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.
EN 3475-601:2007 is classified under the following ICS (International Classification for Standards) categories: 49.060 - Aerospace electric equipment and systems. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 3475-601:2007 has the following relationships with other standards: It is inter standard links to EN 2713-007:2005, EN 4611-004:2018, EN 2267-009:2017, EN 2713-011:2006, EN 3375-011:2022, EN 2084:2018, EN 4611-007:2012, EN 4612-008:2011, EN 4604-006:2019, EN 4612-006:2019, EN 2714-008:2006, EN 4604-010:2017, EN 3375-001:2022, EN 4604-003:2009, EN 3375-011:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3475-601:2007 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Cables, electrical, aircraft use - Test methods - Part 601: Smoke densitySérie aérospatiale - Câbles électriques a usage aéronautique - Méthodes d'essais - Partie 601: Densité de fuméeLuft- und Raumfahrt - Elektrische Leitungen für Luftfahrzeuge - Prüfverfahren - Teil 601: RauchdichteTa slovenski standard je istoveten z:EN 3475-601:2007SIST EN 3475-601:2007en49.060Aerospace electric equipment and systemsICS:SLOVENSKI
STANDARDSIST EN 3475-601:200701-november-2007
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3475-601August 2007ICS 49.060 English VersionAerospace series - Cables, electrical, aircraft use - Testmethods - Part 601: Smoke densitySérie aérospatiale - Câbles électriques à usageaéronautique - Méthodes d'essais - Partie 601: Densité defuméeLuft- und Raumfahrt - Elektrische Leitungen fürLuftfahrzeuge - Prüfverfahren - Teil 601: RauchdichteThis European Standard was approved by CEN on 21 June 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3475-601:2007: E
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