SIST EN 4057-302:2009

• Abstract:

  This standard specifies the procedure to determine the burning characteristics of cable ties for harnesses for aerospace applications.; It shall be used together with EN 4057 100.

• Status: Published
• Publication Date: 02-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: 26-Mar-2009
• Due Date: 31-May-2009
• Completion Date: 03-Apr-2009
• Ref Project: EN 4057-302:2006 - Aerospace series - Cable ties for harnesses - Test methods - Part 302: Flammability

• Refers: SIST EN 4057-100:2009 - Aerospace series - Cable ties for harnesses - Test methods - Part 100: General
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4056-006:2014 - Aerospace series - Cable ties for harnesses - Part 006: Peek cable ties - For operating temperatures -55 °C to 240 °C - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4056-001:2015 - Aerospace series - Cable ties for harnesses - Part 001: Technical specification
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4056-001:2009 - Aerospace series - Cable ties for harnesses - Part 001: Technical specification
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4056-003:2016 - Aerospace series - Cable ties for harnesses - Part 003: Plastic cable ties - Operating temperatures -65 °C to 105 °C and -65 °C to 150 °C - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4056-005:2023 - Aerospace series - Cable ties for harnesses - Part 005: Plastic cable ties with metallic locking devices, operating temperatures -65 °C to 105 °C and -65 °C to 150 °C - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4056-004:2015 - Aerospace series - Cable ties for harnesses - Part 004: Plastic cable ties - For operating temperatures - 55 °C to 105 °C and - 55 °C to 150 °C - Product standard
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4056-003:2019 - Aerospace series - Cable ties for harnesses - Part 003: Plastic cable ties - Operating temperatures -65 °C to 105 °C and -65 °C to 150 °C - Product standard
• Effective Date: 28-Jan-2026

SIST EN 4057-302:2009 is the Slovenian adoption of EN 4057-302:2006 from CEN. It gives the test method for determining the burning characteristics of cable ties for harnesses used in aerospace applications, and it is intended to be used together with EN 4057-100.

What does SIST EN 4057-302:2009 specify?

SIST EN 4057-302:2009 specifies a flammability test procedure for cable ties for harnesses in aerospace applications. It is a test method, so it tells you how to run the test and what to observe, while the acceptance requirement comes from the relevant product standard.

The document is organized into five main clauses:

• Scope
• Normative references
• Apparatus
• Procedure
• Requirements

Clause 1 states the purpose of the test. Clause 2 points to EN 4057-100, which is needed to apply this part. Clauses 3 and 4 describe the test set-up and sequence, and clause 5 links the result to the appropriate product standard.

What are the key requirements of SIST EN 4057-302:2009?

The test is tightly controlled so that different laboratories can compare results. In practice, the important points are the burner set-up, specimen preparation, flame exposure, and what must be recorded.

• Clause 3 requires a hood or cabinet free from air currents and a 9.5 mm Bunsen burner. This matters because drafts and an unsuitable burner can change the flame behavior and make results inconsistent.
• Clause 4 requires the tail of the cable tie to be cut back to the uniform section and the specimen to be mounted horizontally. This gives every sample the same exposure condition.
• Clause 4 sets the burner to a 75 mm non-luminous flame with a 25 mm blue cone. That standardizes the heat input to the specimen.
• Clause 4 uses a bare copper wire of 0.7 mm nominal diameter, with a free length of at least 100 mm, to adjust the burner. The burner must be set so the wire starts to melt within the stated time range, which checks that the flame is at the right severity before the specimen is tested.
• Clause 4 requires the burner to be held at a 45° angle to the specimen, and the tip of the strap is exposed to the blue cone for the specified time. This defines the actual flame application used to challenge the cable tie.
• Clause 4 requires recording the time for the flaming specimen to extinguish after removal from the flame and any falling burning or flaming particles. These observations show how the cable tie behaves once ignition has occurred.
• Clause 4 warns that toxic fumes may be released during combustion. In practice, the test needs suitable safety controls and ventilation.
• Clause 5 says the specimen must meet the requirements in the appropriate product standard. The test method alone does not set the pass/fail limit.

What terms does SIST EN 4057-302:2009 define?

• Cable ties for harnesses - The fastening parts being tested for use in aerospace harness assemblies.
• Burning characteristics - The way the cable tie behaves in flame, including whether it keeps burning after removal and whether it drops flaming particles.
• Specimen - The sample cable tie prepared and mounted for the test.
• Bunsen burner - The burner used to produce the controlled flame specified by the method.
• Non-luminous flame - The flame condition used for the test, with a defined blue cone.
• Blue cone - The inner part of the flame that is applied to the specimen.
• EN 4057-100 - The general part that this test method must be used with.

Who uses SIST EN 4057-302:2009?

SIST EN 4057-302:2009 is used by aerospace cable tie manufacturers, test laboratories, and quality teams that need to verify flammability behavior. It is also useful for buyers and engineering staff who specify harness components for aerospace applications and need a common test method for supplier qualification or product approval.

Which standards are used with SIST EN 4057-302:2009?

• EN 4057-100, Aerospace series - Cable ties for harnesses - Test methods - Part 100: General - This is the general companion part and provides the framework needed to apply Part 302.

What does the SIST EN 4057-302:2009 document contain?

The document contains a short, practical test method rather than a long set of product requirements. Clause 3 gives the apparatus, including the draft-free enclosure and burner arrangement. Clause 4 describes specimen preparation, flame adjustment, exposure, and the observations to record after testing. Clause 5 links the result to the relevant product standard, and Figure 1 shows the clamp, specimen, and burner arrangement used for the test.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aeronavtika - Kabelske spojke za vezalno pasovje - Preskusne metode - 302. del: GorljivostLuft- und Raumfahrt - Befestigungsbänder für Leitungsbündel - Prüfverfahren - Teil 302: EntflammbarkeitSérie aérospatiale - Frettes de câblage pour harnais - Méthodes d'essais - Partie 302 : Tenue à la flammeAerospace series - Cable ties for harnesses - Test methods - Part 302: Flammability49.060Aerospace electric equipment and systemsICS:Ta slovenski standard je istoveten z:EN 4057-302:2006SIST EN 4057-302:2009en,de01-maj-2009SIST EN 4057-302:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 4057-302December 2006ICS 49.060 English VersionAerospace series - Cable ties for harnesses - Test methods -Part 302: FlammabilitySérie aérospatiale - Frettes de câblage pour harnais -Méthodes d'essais - Partie 302 : Tenue à la flammeLuft- und Raumfahrt - Befestigungsbänder fürLeitungsbündel - Prüfverfahren - Teil 302: EntflammbarkeitThis European Standard was approved by CEN on 28 October 2005.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 4057-302:2006: ESIST EN 4057-302:2009
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