kSIST FprEN 3475-701:2026

• Abstract:

  This document specifies methods of measuring the strippability and adherence of the insulation to a conductor of a finished cable.; When a particular method is not specified in the detail product specification, method A is the default test method.; Method B is suitable for wires insulated with materials showing a low adhesion to the conductor due to the poor repeatability of the test method A with this type of wires.; This document is intended to be used together with EN 3475-100.

• Status: Not Published
• Public Enquiry End Date: 23-Jul-2025
• ICS: 29.060.20 - Cables
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 17-Apr-2026
• Due Date: 05-Jun-2026
• Completion Date: 20-Apr-2026
• Ref Project: EN 3475-701:2026 - Aerospace series - Cables, electrical, aircraft use - Test methods - Part 701: Strippability and adherence of insulation to the conductor

• Revises: SIST EN 3475-701:2018 - Aerospace series - Cables, electrical, aircraft use - Test methods - Part 701 - Strippability and adherence of insulation to the conductor
• Effective Date: 06-Dec-2023

kSIST FprEN 3475-701:2026 is a draft European Standard in the aerospace series, prepared by ASD-STAN for CEN. It specifies test methods for measuring the strippability of insulation and the adherence of insulation to the conductor in electrical cables used in aircraft. In practice, it is the document you use when you need a repeatable way to check how easily insulation can be removed and how firmly it remains attached.

What does kSIST FprEN 3475-701:2026 specify?

kSIST FprEN 3475-701:2026 covers methods for testing a finished cable for insulation stripping and a wire for insulation adherence to the conductor. The document is organized into scope, normative references, terms and definitions, specimen preparation, methods, requirements, and a bibliography.

The scope gives two different uses:

• Method A is the default when the detail product specification does not name a method.
• Method B is intended for wires with low insulation adhesion, where method A has poor repeatability.

The standard is intended to be used together with EN 3475-100, which provides the general framework for this test-method series.

What are the key requirements of kSIST FprEN 3475-701:2026?

kSIST FprEN 3475-701:2026 distinguishes between preparation of specimens, the test method, and the acceptance requirement. The practical point is that the test piece and the acceptance limit depend on whether you are checking stripping performance or insulation adhesion.

Specimen preparation

Clause 4 says measurements are taken from samples directly out of a reel or coil with minimum deformation. For insulation stripping properties, the specimen comes from the finished cable. For adherence of insulation to the conductor, the specimen comes from individual wire before integration in a finished cable.

That matters because the test is tied to the stage of manufacture. If you sample the wrong form of product, the result does not match the standard.

Stripping performance

For cables with sections up to 5 mm, stripping shall be possible over 5 mm at both ends of each specimen. For sections greater than 5 mm, the required length is 8 mm at both ends. The stripping tools shall conform to EN 2812, and the manufacturer shall state the tools used in the test report.

In practice, this means the lab must use defined tools and record them, so the result can be repeated and compared.

Adherence test methods

For adherence, the conductor is passed through a calibrated hole sized at conductor diameter plus 0.05 mm, then pulled with increasing tensile force until it slides inside the insulating cover. The tensile speed is 100 ± 10 mm/min for both methods.

Method B requires three measurements per sample. That is important for low-adhesion materials, where a single reading can be less stable.

Acceptance criteria

For stripping capability of the jacket on screened cables, the stripping operation shall not exceed 40 s for a suitably skilled operator. For adherence, method A requires the force values to meet the technical specification, while method B requires each measurement to meet the product standard. If one method B value is low, two more measurements are taken and the median of five must meet the product standard.

That means the acceptance limit is not only about the force itself, but also about how the result is confirmed when readings vary.

What changed in kSIST FprEN 3475-701:2026 from the previous edition?

kSIST FprEN 3475-701:2026 supersedes EN 3475-701:2017. The foreword lists an editorial revision and two technical clarifications:

• for insulation stripping, the specimen is taken from the finished cable
• for insulation adherence, the specimen is taken from individual wire before integration into a finished cable

These changes help remove ambiguity about where the test piece comes from.

Which standards are used with kSIST FprEN 3475-701:2026?

kSIST FprEN 3475-701:2026 cites EN 2812, Aerospace series - Stripping of electric cables. It supplies the stripping tools used for the stripping-related preparation and test steps.

The scope also says the document is intended to be used with EN 3475-100, Aerospace series - Cables, electrical, aircraft use - Test methods - Part 100: General. That companion part provides the general test-method framework for this series.

What does the kSIST FprEN 3475-701:2026 document contain?

kSIST FprEN 3475-701:2026 contains specimen-preparation instructions, two adherence test methods, a stripping-capability method, and acceptance requirements. Figures 1 and 2 show the specimen layouts for method A and method B, including where the insulation is cut and how much is stripped back.

Clause 5 describes the test set-ups, including the calibrated hole, tensile loading, and pulling speed. Clause 6 gives the pass-fail criteria that laboratories and quality teams use for testing and product approval.

SLOVENSKI STANDARD
oSIST prEN 3475-701:2025
01-julij-2025
Aeronavtika - Električni kabli za uporabo v letalih - Preskusne metode - 701. del:
Odstranljivost in oprijemljivost izolacije vodnika
Aerospace series - Cables, electrical, aircraft use - Test methods - Part 701: Strippability
and adherence of insulation to the conductor
Luft- und Raumfahrt - Elektrische Leitungen für Luftfahrtverwendung - Prüfverfahren -
Teil 701: Abisolierbarkeit und Haftfestigkeit der Isolierung auf dem Leiter
Série aérospatiale - Câbles électriques à usage aéronautique - Méthodes d'essais -
Partie 701 : Dénudabilité et adhérence de l'isolation sur le conducteur
Ta slovenski standard je istoveten z: prEN 3475-701
ICS:
29.060.20 Kabli Cables
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
oSIST prEN 3475-701:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 3475-701:2025
oSIST prEN 3475-701:2025
DRAFT
EUROPEAN STANDARD
prEN 3475-701
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2025
ICS 49.060 Will supersede EN 3475-701:2017
English Version
Aerospace series - Cables, electrical, aircraft use - Test
methods - Part 701: Strippability and adherence of
insulation to the conductor
Série aérospatiale - Câbles électriques à usage Luft- und Raumfahrt - Elektrische Leitungen für
aéronautique - Méthodes d'essais - Partie 701 : Luftfahrtverwendung - Prüfverfahren - Teil 701:
Dénudabilité et adhérence de l'isolation sur le Abisolierbarkeit und Haftfestigkeit der Isolierung auf
conducteur dem Leiter
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 3475-701:2025 E
worldwide for CEN national Members.

oSIST prEN 3475-701:2025
prEN 3475-701:2025 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Preparation of specimens . 4
4.1 General. 4
4.2 Insulation stripping properties . 4
4.3 Adherence of insulation to the conductor . 4
4.3.1 General. 4
4.3.2 Method A . 4
4.3.3 Method B . 5
5 Methods . 5
5.1 Method for stripping capability of the jacket (screened cables) . 5
5.2 Methods for adherence of the insulation . 5
5.2.1 Method A . 5
5.2.2 Method B . 5
6 Requirements . 6
6.1 Requirements for stripping capability of the jacket (screened cables) . 6
6.2 Requirement
...