prEN 4650
(Main)Aerospace series - Wire and cable marking process, UV Laser
Aerospace series - Wire and cable marking process, UV Laser
This document is applicable to the marking of aerospace vehicle electrical wires and cables using ultraviolet (UV) lasers.
This document specifies the process requirements for the implementation of UV laser marking of aerospace electrical wires and cables and fibre optic cables to achieve an acceptable quality mark using equipment designed for UV laser wire marking of identification codes on aircraft wire and cable subject to EN 3475 100, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 100: General. Wiring specified as UV laser markable, and which has been marked in accordance with this document, will conform to the requirements of EN 3838.
This document is applicable to the marking of airframe electrical wires and cables using ultraviolet (UV) lasers. The laser process practices defined in this document are mandatory.
Luft- und Raumfahrt - Leitungs- und Kabelkennzeichnungsverfahren durch UV-Laser
Dieses Dokument ist anwendbar auf das Kennzeichnen von elektrischen Leitungen und Kabeln von Luft- und Raumfahrtzeugen unter Anwendung von Ultraviolett(UV)-Lasern.
Dieses Dokument legt die Anforderungen an das Verfahren zur Einführung des Kennzeichnens von elektrischen Leitungen, Kabeln und Lichtwellenleiterkabeln mit UV-Laser fest, um mit für die Kennzeichnung von Leitungen mit UV-Laser konstruierten Geräten eine Kennzeichnung von annehmbarer Qualität auf für die Luft- und Raumfahrt vorgesehenen Leitungen und Kabeln zu erzeugen, die den Anforderungen von EN 3475 100, Luft- und Raumfahrt — Elektrische Leitungen für Luftfahrtverwendung — Prüfverfahren — Teil 100: Allgemeines, unterliegen. Leitungen, die entsprechend den Festlegungen mit UV-Laser gekennzeichnet werden können und die entsprechend diesem Dokument gekennzeichnet wurden, erfüllen die Anforderungen von EN 3838.
Dieses Dokument ist auf die Kennzeichnung von elektrischen Leitungen und Kabeln für Flugwerke unter Anwendung von Ultraviolett(UV)-Lasern anwendbar. Die in dieser Norm festgelegten Praktiken hinsichtlich des Laserverfahrens sind zwingend vorgeschrieben.
Série aérospatiale - Procédé de marquage des fils et câbles par laser UV
Le présent document est applicable au marquage des fils et des câbles électriques de véhicules aérospatiaux par lasers ultraviolets (UV).
Ce document spécifie les exigences relatives au procédé de mise en œuvre du marquage par laser UV des fils et câbles électriques ainsi que des câbles à fibres optiques pour l’aérospatiale, en vue d’obtenir une marque de qualité acceptable en utilisant des équipements conçus pour le marquage par laser UV de codes d'identification sur les fils et câbles à usage aéronautique relevant de l’EN 3475-100, Série aérospatiale ― Câbles électriques à usage aéronautique ― Méthodes d'essais ― Partie 100 : Généralités. Les câblages spécifiés comme marquables par laser UV et qui ont été marqués conformément au présent document seront conformes aux exigences de l'EN 3838.
Le présent document est applicable au marquage des fils et câbles électriques de cellules par lasers ultraviolets (UV). Les pratiques liées au procédé laser définies dans la présente norme sont obligatoires.
Aeronavtika - Postopek označevanja žic in kablov z UV-laserjem
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Aeronavtika - Postopek označevanja žic in kablov z UV-laserjem
Aerospace series - Wire and cable marking process, UV Laser
Luft- und Raumfahrt - Leitungs- und Kabelkennzeichnungsverfahren durch UV-Laser
Série aérospatiale - Procédé de marquage des fils et câbles par laser UV
Ta slovenski standard je istoveten z: prEN 4650
ICS:
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2025
ICS 49.060 Will supersede EN 4650:2023
English Version
Aerospace series - Wire and cable marking process, UV
Laser
Série aérospatiale - Procédé de marquage des fils et Luft- und Raumfahrt - Leitungs- und
câbles par laser UV Kabelkennzeichnungsverfahren durch UV-Laser
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 4650:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, symbols and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Symbols and abbreviations . 11
4 Requirements . 11
4.1 UV laser wire marking requirements . 11
4.2 Design construction file . 11
4.3 Process requirements . 11
4.3.1 Laser wavelength . 11
4.3.2 Mask based laser marking systems (see Clause 8) . 11
4.3.3 Scanning laser marking systems (see Clause 8) . 12
4.3.4 Wire manufacturer’s mark . 13
4.3.5 IR radiation . 14
4.4 System requirements . 15
4.4.1 Laser type . 15
4.4.2 Laser output control . 15
4.5 Quality requirements — General . 15
4.5.1 Insulation damage . 15
4.5.2 Legibility and permanence . 15
4.5.3 Mark contrast . 15
5 Quality assurance provisions . 15
5.1 Responsibility for inspection. 15
5.1.1 General. 15
5.1.2 Test equipment and inspection facilities . 15
5.2 Quality conformance inspection . 15
5.2.1 General. 15
5.2.2 Inspection conditions . 16
5.3 Verification inspection . 16
5.4 Quality conformance inspection . 16
6 Test methods . 17
6.1 Design construction file . 17
6.2 Laser wavelength (see Clause 8) . 17
6.3 Laser pulse length (see Clause 8) . 17
6.4 Applied laser fluence . 17
6.4.1 Mask Based Marking System . 17
6.4.2 Scanning Laser Marking System . 18
6.5 Laser dot overlap in scanning laser marking systems . 19
6.6 IR radiation . 19
6.7 Laser type . 19
6.8 Laser output control . 19
6.9 Insulation damage . 19
6.10 Legibility and permanence. 19
6.11 Mark contrast measurements . 19
7 Packaging . 19
8 Notes . 19
8.1 Principle of the marking process . 19
8.1.1 General . 19
8.1.2 Mask-based laser marking systems . 20
8.1.3 Scanning laser marking systems . 20
8.2 Markability of wire constructions . 21
8.3 Properties of UV laser-marked insulation materials . 21
8.3.1 General . 21
8.3.2 Mark depth . 21
8.3.3 Mark permanence . 22
8.3.4 Mark colour. 22
8.3.5 Polymer insulation background colour . 22
8.3.6 Fungus . 22
8.4 Laser wavelength . 22
8.5 Pulse length . 23
8.6 Pulse repetition rate . 23
8.7 Laser type . 23
Annex A (normative) Information for dot overlap measurement methods for laser scanning
marking and laser beam distribution profiles . 24
Bibliography . 27
European foreword
This document (prEN 4650:2025) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document 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 document is currently submitted to the CEN Enquiry.
This document will supersede EN 4650:2023.
— Major revision of Clause 4:
o expanded and updated, requirements for laser scanning marking systems including applied laser
fluence and dot overlap;
o new section added for wire manufacturer’s mark;
— Annex A:
o consolidated dot measurement and dot overlap for high and low overlap.
Introduction
Ultraviolet (UV) laser wire marking was developed in 1987 to provide a safe, permanent means of
marking thin wall insulations; it is now the aerospace industry standard method for marking wire
identification codes on to the surface of electrical wires and cables. It provides a simple, convenient,
environmentally friendly, cost-effective means of marking and identifying wires and jacketed cables.
While a few larger airframe manufacturers have developed process standards and specifications for their
own use during the introduction of this technology, there has been variability in the issues covered within
these specifications and there has been no comprehensive standard process document developed for
general use. The intended use of this document is to serve directly as a process standard for use by laser
wire mark
...
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