SIST EN 3475-417:2009

• Abstract:

  This standard specifies a method of testing the fire resistance of fire resistance or fire-proof electrical cables inside a harness.; The objective of this test is to qualify these cables when they are confined inside harnesses defined hereafter. Described configurations try to be representative of various cables configuration installed in Aircraft.; It shall be used together with EN 3475-100.

• Status: Published
• Publication Date: 19-Apr-2009
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 25-Mar-2009
• Due Date: 30-May-2009
• Completion Date: 20-Apr-2009
• Ref Project: EN 3475-417:2009 - Aerospace series - Cables, electrical, aircraft use - Test methods - Part 417: Fire resistance of cables confined inside a harness

• Refers: SIST EN 3475-100:2010 - Aerospace series - Cables, electrical, aircraft use - Test methods - Part 100: General
• Effective Date: 28-Jan-2026
• Refers: SIST EN 2346-002:2009 - Aerospace series - Cable, electrical, fire resistant - Operating temperatures between - 65 °C and 260 °C - Part 002: General
• Effective Date: 28-Jan-2026
• Refers: SIST EN 378-1:2000/A1:2004 - Refrigerating systems and heat pumps - Safety and environmental requirements - Part 1: Basic requirements, definitions, classification and selection criteria
• Effective Date: 28-Jan-2026
• Refers: SIST EN 3475-408:2026 - Aerospace series - Cables, electrical, aircraft use - Test methods - Part 408: Fire resistance
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4611-009:2012 - Aerospace series - Cables, electrical, for general purpose, single and multicore assembly - XLETFE Family - Part 009: BJ - Nickel plated copper - Operating temperatures, between – 65 °C and 150 °C - Single extruded wall for use as cable cores or within equipment in areas of high vibration, cable flexing and fluid contamination - UV laser printable - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4612-006:2012 - Aerospace series - Cables, electrical, for general purpose, single and multicore assembly - XLETFE Family - Jacketed or screened and jacketed - Part 006: Tin plated copper - Operating temperatures, between - 65 °C and 135 °C - Dual extruded wall for open applications, with jacket and screen (braid) - UV laser printable - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4611-006:2012 - Aerospace series - Cables, electrical, for general purpose, single and multicore assembly - XLETFE Family - Part 006: Silver plated copper - Operating temperatures, between – 65 °C and 150 °C - Dual extruded wall for open applications - UV laser printable - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4604-005:2015 - Aerospace series - Cable, electrical, for signal transmission - Part 005: Cable, coaxial, 75 ohmx, 200 °C, type WL - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4612-010:2011 - Aerospace series - Cables, electrical, for general Cables, electrical, for general purpose, single and multicore assembly - XLETFE Family - Jacketed or screened and jacketed - Part 010: Silver plated copper - Operating temperatures, between - 65 °C and 150 °C - Dual extruded wall for open applications, with jacket and screen (braid) - UV laser printable - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4681-006:2019 - Aerospace series - Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium - Part 006: AZA family, single and multicore assembly, for use in low pressure atmosphere - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4611-006:2018 - Aerospace series - Cables, electrical, for general purpose, single and multicore assembly - XLETFE Family - Part 006: Silver plated copper Operating temperatures, between - 65 °C and 150 °C - Dual extruded wall for open applications - UV laser printable - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 2713-007:2006 - Aerospace series - Cables, electrical, single and multicore for general purpose - Operating temperatures between - 55 °C and 200 °C - Part 007: Screened (spiral) and jacketed, UV laser printable - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 2714-006:2009 - Aerospace series - Cables, electrical, single and multicore for general purpose - Operating temperatures between - 55 °C and 260 °C - Part 006: Screened (braided) and jacketed, CO2 laser printable - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4612-002:2019 - Aerospace series - Cables, electrical, for general purpose, single and multicore assembly - XLETFE Family - Jacketed or screened and jacketed - Part 002: General
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 2267-009:2017 - Aerospace series - Cables, electrical, for general purpose - Operating temperatures between - 55 °C and 260 °C - Part 009: DRA family, single and multicore assembly - Product standard
• Effective Date: 28-Jan-2026

SIST EN 3475-417:2009 is the Slovenian adoption of EN 3475-417:2009, a CEN European Standard for aerospace electrical cables. Prepared by ASD-STAN and approved by CEN, it specifies a test method for assessing the fire resistance of fire-resistant or fire-proof cables when they are confined inside an aircraft-style harness, and it is used together with EN 3475-100.

What does SIST EN 3475-417:2009 specify?

SIST EN 3475-417:2009 specifies a fire-resistance test for electrical cables used in aircraft when those cables are installed inside a harness. The method is intended to qualify cable constructions in harness configurations that are representative of aircraft installation practice.

The document is organized into six clauses and one normative annex:

Part	What it covers
Clause 1	Scope
Clause 2	Normative references
Clause 3	Preparation of specimens
Clause 4	Apparatus
Clause 5	Method
Clause 6	Requirements/Acceptance criteria
Annex A (normative)	Circuit diagram principle for measurement of equipotentials

The standard explicitly says it shall be used together with EN 3475-100. In practice, that means this part gives the special fire-and-harness test, while the general rules come from the companion part.

What are the key requirements of SIST EN 3475-417:2009?

Clause 3 requires three specimens per configuration, each 0.75 m long. That gives repeatable results and makes the test suitable for qualification rather than a one-off demonstration.

Clause 4 ties the apparatus to EN 3475-408 and ISO 2685. The burner, test fixture, flame conditions, heat flux, and vibration characteristics are controlled so that the test setup matches the intended fire-zone exposure on aircraft.

Specimen configuration

Clause 5.1 uses three homogeneous harness configurations unless the product standard says otherwise: codes 002, 006, and 020. These correspond to different conductor sizes, so the test covers more than one harness build-up.

The harness is built from three-core cable EN2346-xxxCyyy and assembled as groups of cables connected in series. The sample is twisted with a defined lay length and mounted on a frame, with a load taken from Table 1. In practice, this means the sample has to be built and restrained as a real harness, not as loose cable.

Fire and vibration exposure

Clause 5.2 requires the test to run without fluid immersion. Each sample is exposed to flame and vibration together for 5 minutes, then vibration continues for another 10 minutes after the flame is removed.

That sequence matters because it checks whether the cable keeps its electrical function not only during heating, but also during the period after direct flame exposure when mechanical damage can still grow.

Electrical monitoring and acceptance

Clause 5.2 requires insulation resistance to be measured simultaneously between equipotential 1/2 and equipotential 3/4. Annex A gives the circuit diagram principle used for that measurement.

Clause 6 requires electrical continuity and insulation resistance to be checked during the test. The minimum insulation resistance is 10 000 Ω unless the product standard states otherwise. For a reader, this is the pass-fail basis: the harness has to remain electrically usable while exposed to the defined fire and vibration sequence.

Who uses SIST EN 3475-417:2009?

This standard is used by aerospace cable manufacturers, harness assemblers, and test laboratories that qualify cables for aircraft use. It is also used by quality, engineering, and procurement teams that need a defined test method for fire-resistant or fire-proof cables inside harnesses.

In practice, users apply it when they need to set up a qualification test, compare cable constructions, or verify that a harness design meets the required fire-resistance behavior under combined thermal and vibration stress.

Which standards are used with SIST EN 3475-417:2009?

• EN 2346-002 - defines the fire-resistant cable family used to build the test harnesses.
• EN 3475-100 - provides the general test-method rules that this part must be used with.
• EN 3475-408 - supplies the apparatus basis and the fire-resistance test framework referenced for this method.
• ISO 2685 - provides the aircraft fire-zone environmental test procedure and burner guidance used as an apparatus reference.

What does the SIST EN 3475-417:2009 document contain?

The document contains a short test method focused on specimen preparation, apparatus, procedure, and acceptance criteria. It also includes a harness schematic in Figure 1 and a load table for the three harness sizes used in the method.

Annex A adds the circuit diagram principle for measuring the equipotential pairs during the test. That annex supports simultaneous electrical monitoring while the sample is under flame and vibration, which is the practical core of this standard.

SLOVENSKI STANDARD
01-junij-2009
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Aerospace series - Cables, electrical, aircraft use - Test methods - Part 417: Fire
resistance of cables confined inside a harness
Luft- und Raumfahrt - Elektrischen Leitungen für Luftfahrt Verwendung - Prüfverfahren -
Teil 417: Feuerbeständigkeit von Leitungen eingebunden in Bündeln
Série aérospatiale - Câbles électriques à usage aéronautique - Méthodes d'essais -
Partie 417: Tenue au feu des câbles confinés dans un harnais
Ta slovenski standard je istoveten z: EN 3475-417:2009
ICS:
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 3475-417
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2009
ICS 49.060
English Version
Aerospace series - Cables, electrical, aircraft use - Test
methods - Part 417: Fire resistance of cables confined inside a
harness
Série aérospatiale - Câbles électriques à usage Luft- und Raumfahrt - Elektrischen Leitungen für Luftfahrt
aéronautique - Méthodes d'essais - Partie 417: Tenue au Verwendung - Prüfverfahren - Teil 417: Feuerbeständigkeit
feu des câbles confinés dans un harnais von Leitungen eingebunden in Bündeln
This European Standard was approved by CEN on 30 August 2008.
CEN 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 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 translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3475-417:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Preparation of specimens .4
4 Apparatus .4
5 Method .5
6 Requirements/Acceptance criteria .6
Annex A (normative) Circuit diagram principle for measurement of equipotentials .7
Foreword
This document (EN 3475-417:2009) 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 September 2009, and conflicting national standards shall be
withdrawn at the latest by September 2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations
...