EN 6059-502:2014

SLOVENSKI STANDARD
01-marec-2015
1DGRPHãþD
SIST EN 6059-502:2009
$HURQDYWLND(OHNWULþQLNDEOLQDPHVWLWHY=DãþLWQHRERMNH3UHVNXVQHPHWRGH
GHO2GSRUQRVWSURWLHOHNWULþQLPREORNRP
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
Série aérospatiale - Câbles électriques, installation - Gaines de protection - Méthodes
d'essais - Partie 502 : Résistance aux arcs électriques
Ta slovenski standard je istoveten z: EN 6059-502:2014
ICS:
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 6059-502
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2014
ICS 49.060 Supersedes EN 6059-502:2009
English Version
Aerospace series - Electrical cables, installation - Protection
sleeves - Test methods - Part 502: Resistance to electrical arcs
Série aérospatiale - Câbles électriques, installation - Gaines Luft- und Raumfahrt - Elektrische Leitungen, Installation -
de protection - Méthodes d'essais - Partie 502: Résistance Schutzschläuche - Prüfverfahren - Teil 502:
aux arcs électriques Lichtbogenfestigkeit
This European Standard was approved by CEN on 28 June 2014.

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. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 6059-502:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Specimen requirements .4
4 Definition and preparation of specimen .5
4.1 Protected bundle (bundle P) .5
4.2 Aggressive bundle (bundle A) .5
4.3 Test configuration.7
5 Apparatus .8
5.1 Electrical equipment .8
5.2 Test equipment . 10
5.3 Test protocol . 10
5.4 Test rig set-up . 10
6 Method . 11
6.1 Test Procedure . 11
6.2 Examination . 12
6.3 Test report . 12
7 Requirements . 12

Foreword
This document (EN 6059-502:2014) 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 Standard 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 European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by June 2015, and conflicting national standards shall be withdrawn at
the latest by June 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 6059-502:2009.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
1 Scope
This European Standard specifies a method of assessing the behaviour of protection sleeves or conduits
subject to an external electric arc, either at 115 Vac or 230 Vac 400 Hz.
This Standard shall 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 cables inside this protection, which
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 current limit In to
each sleeves or conduits construction.
Two levels of prospective fault current are specified for all protection sizes.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
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 2350, Aerospace series — Circuit breakers — Technical specification
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
1)
A-A-52083, Specification for tape lacing and tying
3 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.

1) Published by: Customer Service, Defense Printing Service Detachment Office, 700 Robbins Ave, Building 4D,
Philadelphia PA 19111-5094 USA.
4 Definition and preparation of specimen
4.1 Protected bundle (bundle P)
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.
The cable bundle outer diameter shall be as closed as possible to the internal diameter of the protection to be
tested. This diameter is obtained:
 with a full assembly of size 24 cables, or
 with a central part in various cable types covered with a full and uniform layer of size 24 cables.
The sleeve shall be fitted in accordance with the manufacturer’s declared fitting instructions.
4.2 Aggressive bundle (bundle A)
4.2.1 Definition and constitution
Bundles A are made of 7 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.
The short circuit will be created on these bundles (see 4.3).
The cables gauge is chosen in Table 1, in accordance with the In limit specified for the protection sleeves.
Table 1 — Choice of cable gauge
CB ratings
3 5 7,5 10 10 15 20 25 50
(A)
Gauge 26 24 22 20 18 16 14 12 10

Circuit breaker used to protect these cables must be also in accordance with Table 1.
EXAMPLE If the sleeve must provide a 15 A protection, take gauge 16 cables to built the bundle with 15 A CB ratings.
For information the diameter of the bundle will be three times the cable diameter.
4.2.2 Preparation
Cut seven separate lengths of approximately 0,5 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.
4.2.3 Lay up the seven cables as follows:
a) Form the cables in a six around one configuration as shown in Figure 1.
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 2.
NOTE The tie material shall be PTFE glass lacing tape conforming to A-A-52083, finish D size 3.

A1-A2 : phase A
B1-B2 : phase B
C1-C2 : phase C
N : Neutral cable
connected to earth
Key
1 Drop needle
Figure 1 — Bundle A – Electrical configuration

Key
1 Glass lacing ties
2 Drop needle
3 Drops
4 10 mm to 20 mm
5 Ends of the 7 cables in the same plane
Figure 2 — Configuration of bundle A
4.3 Test configuration
The bundle A shall be attached on bundle P by qualified tyraps, according to the following Figures 3 and 4.
For protective materials with a join or overlap the bundle A shall be so positioned that the energy from any arc
is applied to the minimum material thickness part of the protective material

Key
1 Ends of the 7 cables in the same plane 6 Length and end of bundle sample to be define with
mechanical test setup
2 10 mm to 20 mm
7 Drops
3 Cable ties
8 Bundle P
4 Tyraps
9 Bundle A
5 Two attachment points
Figure 3 — Test bundles configuration
Key
1 Bundle P
2 Drip needle
3 Bundle A
Figure 4 — Test configuration
5 Apparatus
5.1 Electrical equipment
5.1.1 For 115 Vac 400 Hz network
Connect the seven cables of the test sample within a circuit as shown in Figure 5. This circuit shall have the
following requirements:
a) The provision of adjustable levels of prospective fault currents for the six A, B and C cables.
b) A three phase 200/115 V 400 Hz star (Y) connected supply shall be derived from a dedicated rotary
machine capable of sustaining the maximum prospective fault current given in Table 1 for at least
sufficient time for circuit protection to operate. In any case the generator shall have a 1 min rating of not
less than 20 kVA.
c) Circuit breakers shall be rated as given in Table 2 and shall be single pole units. They shall have trip
characteristics in accordance with EN 2350 or as required in the product specification.
NOTE In particular case, others ratings of thermal breaker protection could be employe
...