FprEN 6059-502

Aerospace series - Electrical cables, installation - Protection sleeves - Test methods - Part 502: Resistance to electrical arcs

This document specifies a method of assessing the behaviour of protection sleeves or conduits subject to an external electric arc at 115 Vac, 400 Hz.
This document is used in conjunction with EN 6059 100.
The primary aim of this test is to produce, in a controlled fashion, electric arcs at the immediate vicinity of a protection sleeve or conduit and to examine possible consequences on the surrounding external cables bundle which are adjacent from this protection, and are supposed to be maintained in a safe condition. These electric arcs are representative of those, which may occur in service when a typical cable bundle is severely damaged.
In order to optimize thickness and mass of such protection, it is necessary to associate a nominal current limit In to each sleeves or conduits construction.
Two levels of prospective fault current are specified for all protection sizes.

Luft- und Raumfahrt - Elektrische Leitungen, Installation - Schutzschläuche - Prüfverfahren - Teil 502: Lichtbogenfestigkeit

Série aérospatiale - Câbles électriques, installation - Gaines de protection - Méthodes d'essais - Partie 502 : Résistance aux arcs électriques

Le présent document spécifie une méthode pour évaluer le comportement des gaines ou des conduits de protection soumis à un arc électrique externe, à 115 VCA, 400 Hz.
Ce document doit être utilisé conjointement avec l’EN 6059 100.
Le but principal de cet essai est de produire, de façon maîtrisée, des arcs électriques dans le voisinage immédiat d'une gaine ou d’un conduit de protection et d’examiner les conséquences possibles sur le toron de câbles externes environnant qui est adjacent à cette protection et qui est censé être maintenu dans un état sûr. Ces arcs électriques sont représentatifs de ceux qui peuvent survenir en service quand un toron de câbles type est sévèrement endommagé.
Pour optimiser l'épaisseur et la masse d'une telle protection, il est nécessaire d'associer un courante limite In à chaque construction de gaines ou de conduits.
Deux niveaux de courant de défaut présumé sont spécifiés pour toutes les tailles de protection.

Aeronavtika - Električni kabli, namestitev - Zaščitne obojke - Preskusne metode - 502. del: Odpornost proti električnim oblokom

General Information

• Status: Not Published
• Publication Date: 06-Dec-2026
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 2/S 8 - Installation Technologies
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Start Date: 23-Apr-2026
• Completion Date: 23-Apr-2026
• Ref Project: oSIST prEN 6059-502:2024 - Aerospace series - Electrical cables, installation Protection sleeves - Test methods - Part 502: Resistance to electrical arcs

Relations

• Revises: EN 6059-502:2014 - Aerospace series - Electrical cables, installation - Protection sleeves - Test methods - Part 502: Resistance to electrical arcs
• Effective Date: 24-May-2023

Overview

FprEN 6059-502 is a CEN draft standard in the Aerospace series focused on the assessment of electrical cable protection sleeves and conduits for resistance to electrical arcs. This standard specifies a rigorous method to evaluate how well protection sleeves perform when exposed to external electrical arcs-specifically at 115 VAC, 400 Hz. The procedure simulates real-world scenarios where damaged cable bundles may result in electric arc events, ensuring adjacent cables are maintained in a safe condition.

FprEN 6059-502 is typically used alongside EN 6059-100, forming part of a suite of standards dedicated to electrical cable installations and their protection within aerospace applications. The standard aims to help optimize the design of protection sleeves by balancing thickness, mass, and electrical safety, making it an essential tool for manufacturers and engineers in the aerospace industry.

Key Topics

• Protection Sleeve Assessment: The standard details methods for testing the behavior of protection sleeves or conduits installed on electrical cables under electric arc conditions.
• Test Environment: It specifies controlled creation of electric arcs near protection sleeves using short-circuit setups at 115 VAC, 400 Hz, mimicking potential in-service faults in aerospace environments.
• Specimen Preparation: Provides guidelines on cable bundle composition, installation, and damage simulation to ensure consistent and meaningful test results.
• Fault Current Levels: Two levels of prospective fault current are specified across protection sizes to validate sleeve constructions against a range of incident severities.
• Pass/Fail Criteria: Outlines requirements for visual inspection, damage assessment, and post-test dielectric testing to confirm the ongoing integrity of adjacent cable insulation.
• Test Reporting: Specifies documentation requirements including setup details, results, and traceability to particular protection sleeve batches.
• Safety Precautions: Given the hazardous nature of arc testing, the standard includes requirements for personnel protection, transparent enclosures, and video recording.

Applications

• Aerospace Equipment Manufacturing: Ensures that electrical harness protection sleeves offer adequate resistance to electrical arcs, directly supporting safety and reliability in aircraft systems.
• Design Optimization: Assists engineers in selecting appropriate sleeve materials and thicknesses to achieve a balance between protection, weight, and space limitations critical in aerospace environments.
• Compliance Testing: Provides aerospace manufacturers and suppliers with a standardized framework to demonstrate compliance with industry regulations and customer requirements.
• Quality Control and Product Certification: Enhances traceability and repeatability in quality assurance processes for cable protection systems.
• Maintenance and Safety Analysis: Helps evaluators assess the condition or suitability of installed sleeves and conduits in operational aircraft, promoting ongoing airworthiness.

Related Standards

• EN 6059-100: General test methods for aerospace cable protection sleeves; used in conjunction with FprEN 6059-502.
• EN 6059-501: Voltage proof tests for protection sleeves, referenced for initial specimen validation.
• EN 2267-010: Specifications for arc-tracking-resistant cables used in bundled test setups.
• EN 2350: Technical specifications for aerospace circuit breakers relevant to test apparatus configuration.
• EN 3475-302: Test methods for voltage proof (immersion test) applied post-arc testing to evaluated cable insulation integrity.

By adhering to FprEN 6059-502, organizations in the aerospace sector ensure electrical system resilience against arc-induced damage, promoting safety and compliance with European and global standards. This standard is vital for anyone involved in aerospace electrical cable installation, maintenance, or quality assurance.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2024
Aeronavtika - Električni kabli, namestitev - Zaščitne obojke - Preskusne metode -
502. del: Odpornost proti električnim oblokom
Aerospace series - Electrical cables, installation Protection sleeves - Test methods - Part
502: Resistance to electrical arcs
Luft- und Raumfahrt - Elektrische Leitungen, Installation - Schutzschläuche -
Prüfverfahren - Teil 502: Lichtbogenfestigkeit
Ta slovenski standard je istoveten z: prEN 6059-502
ICS:
29.060.20 Kabli Cables
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
prEN 6059-502
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2023
ICS 49.060 Will supersede EN 6059-502:2014
English Version
Aerospace series - Electrical cables, installation Protection
sleeves - Test methods - Part 502: Resistance to electrical
arcs
Luft- und Raumfahrt - Elektrische Leitungen,
Installation - Schutzschläuche - Prüfverfahren - Teil
502: Lichtbogenfestigkeit
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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 6059-502:2023 E
worldwide for CEN national Members.

prEN 6059-502:2024 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Specimen requirements . 5
5 Definition and preparation of specimen . 5
5.1 Test configuration . 5
5.2 Target bundle (bundle T) . 6
5.2.1 Definition and constitution . 6
5.2.2 Preparation . 6
5.2.3 Lay up the seven cables as follows . 6
5.3 Protected bundle (bundle P) . 7
5.3.1 Definition and constitution . 7
5.3.2 Preparation . 7
5.3.3 Lay up the seven cables as follows . 7
6 Apparatus . 10
6.1 Electrical equipment - Test configurations (case of a three-phase 115 VAC network) . 10
6.2 Test equipment . 12
6.3 Test protocol . 12
6.4 Test rig set-up . 13
6.5 Description of the expected measurements. 13
7 Method . 13
7.1 Test procedure . 13
7.2 Short-circuit pass/fail criteria . 14
7.3 Examination . 15
7.4 Test report . 15
8 Requirements . 16

prEN 6059-502:2024 (E)
European foreword
This document (prEN 6059-509:2024) 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 document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 6059-502:2014.
The main changes with respect to the previous edition are as follows:
— EN 6059-502 (P2), 12/2014 — Editorial improvements and update of test method to eliminate the
230 VAC electrical arc, retain only the 115 VAC element and to ensure integrity of adjacent target
harness cable after short circuit test. Update of Clause 2 “Normative references”. Addition of
Clause 3 “Terms and definitions”.
prEN 6059-502:2024 (E)
1 Scope
This document specifies a method of assessing the behaviour of protection sleeves or conduits subject
to an external electric arc, at 115 VAC 400 Hz.
This document is expected to be used together with EN 6059-100.
The primary aim of this test is to produce, in a controlled fashion, electric arcs at the immediate vicinity
of a protection sleeve or conduit and to examine possible consequences on the surrounding external
cables bundle which are adjacent from this protection and are supposed to be maintained in a safe
condition. These electric arcs are representative of those, which can occur in service when a typical
cable bundle is severely damaged.
In order to optimize thickness and mass of such protection, it is necessary to associate a current limit I
n
to each sleeves or conduits construction.
Two levels of prospective fault current are specified for all protection sizes.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 2350, Aerospace series — Circuit breakers — Technical specification
EN 2267-010, Aerospace series — Cables, electrical, for general purpose — Operating temperatures
between -55 °C and 260 °C — Part 010: DR family, single UV laser printable — Product standard
EN 3475-302, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 302: Voltage
proof test
EN 6059-100, Aerospace series — Electrical cables, installation — Protection sleeves — Test methods —
Part 100: General
EN 6059-501, Aerospace series — Electrical cables, installation — Protection sleeves — Test methods —
Part 501: Voltage proof test
A-A-52083, Specification for tape lacing and tying
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/

Published as ASD-STAN Standard at the date of publication of this document by AeroSpace and Defence
industries Association of Europe — Standardization (ASD-STAN), https://www.asd-stan.org/.
Published by Customer Service, Defense Printing Service Detachment Office, 700 Robbins Ave, Building 4D,
Philadelphia PA 19111-5094 USA.
prEN 6059-502:2024 (E)
4 Specimen requirements
Protection sleeves or conduits to be tested shall be of traceable origin and, unless otherwise specified,
shall have passed the voltage proof test (EN 6059-501) as defined in the concerned product standard.
Unless otherwise specified in the concerned technical product standard, at least one size of protection
sleeve per sleeve thickness or construction type (if different from one size to another) shall be assessed.
If possible, for each thickness or construction type, the test must be performed on a sample having the
minimum authorized thickness or minimum authorized mass.
5 Definition and preparation of specimen
5.1 Test configuration
Test set ups are made to reproduce arc containment configuration, which is the worst-case scenario to
demonstrate that sleeve/conduit protect against arc blast and act also as a physical protected barrier.
Current fault of short-circuit shall be max 15 A which represents sleeve installation and signal
segregation at aircraft integration.
The bundle T shall be attached side by side with bundle P by qualified cable ties, according to the
following Figure 1 and illustrated by Figure 2.

Key
1 Cable tie 6 PTFE pipe
2 Drop needle 7 Protection sleeve
3 Protection sleeve 8 Protected bundle
4 Camera 9 d = 0 mm
5 Support 10 Target bundle
Figure 1 — Test configuration
prEN 6059-502:2024 (E)
Key
1 Carrier harness + protective sleeve
2 Bundle P
3 Bundle A
4 Pipe from peristaltic pump
Figure 2 — Illustration test set up
5.2 Target bundle (bundle T)
5.2.1 Definition and constitution
Bundles T are made of seven arc-tracking resistant cables, typically from EN 2267-010 product
standard unless otherwise specified in the concerned protection sleeves product standard, without
bundle external protection.
5.2.2 Preparation
Cut seven separate lengths of approximately 1 m consecutively from one length of cable, and strip one
of the ends of insulation to permit electrical connection. Clean each length of cable with a clean cloth
moistened with propan-2-ol (isopropyl alcohol) fluid.
5.2.3 Lay up the seven cables as follows
a) Form the bundle of cables in a six around one configuration as shown in Figure 3.
b) Ensure that all cables are straight and geometrically parallel, and restrained by ties such that they
are in continuous contact at least within the test zone.
c) Position the ties at 50 mm spacing toward the end of the specimen as shown in Figure 4.
The tie material shall be PTFE glass lacing tape conforming to A-A-52083, finish D size 3.
prEN 6059-502:2024 (E)
Figure 3 — Cable specimen configuration
5.3 Protected bundle (bundle P)
5.3.1 Definition and constitution
Bundles P are made of arc-tracking resistant cables, typically from EN 2267-010 product standard
unless otherwise specified in the concerned protection sleeves product standard, with bundle external
protection to be tested.
5.3.2 Preparation
Cut seven separate lengths of approximately 1 m consecutively from one length of cable, and strip each
of the ends of cable insulation to permit electrical connection.
Clean each length of cable with a clean cloth moistened with propan-2-ol (isopropyl alcohol) fluid.
5.3.3 Lay up the seven cables as follows
a) Damage two cables by inflicting a cut around the total circumference of insulation at the mid-point
of the length:
— take care to ensure that the cut penetrates to the conductor around the full circumference and
has a width 5 mm ± 1 mm (refer to Figure 4). Precaution shall be taken not to cut through the
conductor;
— those two damaged cables shall be side by side and they are identified individually with labels
as A1 and C1 (refer to Figure 4).
b) The five other cables are identified individually with labels as B1, B2 A2, C2 and N.
c) Form the cables in a six-around-one configuration as shown in Figure 3. Ensure that
...