prEN 6059-502
(Main)Aerospace series - Electrical cables, installation - Protection sleeves - Test methods - Part 502: Resistance to electrical arcs
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
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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
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.
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
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”.
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.
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
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.
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
...
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