Aerospace series - Single and multicore electrical cables, screened and jacketed - Technical specification

This document specifies the required characteristics, test methods, qualification and acceptance conditions of single and multicore cables, screened, jacketed and multicore jacketed cables for use in aircraft electrical systems.

Luft- und Raumfahrt - Ein- und mehradrige geschirmte und ummantelte elektrische Leitungen - Technische Lieferbedingungen

Série aérospatiale - Câbles électriques, mono et multiconducteurs, blindés et gainés - Spécification technique

Le présent document spécifie les caractéristiques requises, les méthodes d’essais, les conditions de qualification et de réception des câbles mono et multiconducteurs, blindés, gainés et des câbles multiconducteurs gainés pour utilisation dans les systèmes électriques d’aéronefs.

Aeronavtika - Eno- in večžilni električni kabli, oklopljeni in oplaščeni - Tehnična specifikacija

General Information

Status
Published
Publication Date
30-Mar-2023
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
21-Dec-2022
Completion Date
21-Dec-2022

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SLOVENSKI STANDARD
SIST EN 2235:2023
01-marec-2023
Nadomešča:
SIST EN 2235:2015

Aeronavtika - Eno- in večžilni električni kabli, oklopljeni in oplaščeni - Tehnična

specifikacija

Aerospace series - Single and multicore electrical cables, screened and jacketed -

Technical specification
Luft- und Raumfahrt - Ein- und mehradrige geschirmte und ummantelte elektrische
Leitungen - Technische Lieferbedingungen

Série aérospatiale - Câbles électriques, mono et multiconducteurs, blindés et gainés -

Spécification technique
Ta slovenski standard je istoveten z: EN 2235:2022
ICS:
29.060.20 Kabli Cables
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
SIST EN 2235:2023 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 2235:2023
---------------------- Page: 2 ----------------------
SIST EN 2235:2023
EN 2235
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2022
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 2235:2015
English Version
Aerospace series - Single and multicore electrical cables,
screened and jacketed - Technical specification

Série aérospatiale - Câbles électriques, mono et Luft- und Raumfahrt - Ein- und mehradrige geschirmte

multiconducteurs, blindés et gainés - Spécification und ummantelte elektrische Leitungen - Technische

technique Lieferbedingungen
This European Standard was approved by CEN on 17 July 2022.

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, 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2235:2022 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 2235:2023
EN 2235:2022 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms and definitions ................................................................................................................................... 8

4 Materials and construction of cables ....................................................................................................... 8

4.1 General................................................................................................................................................................ 8

4.2 Materials ............................................................................................................................................................ 8

4.3 Construction of cables ................................................................................................................................... 8

4.3.1 General................................................................................................................................................................ 8

4.3.2 Cabled cores ...................................................................................................................................................... 8

4.3.3 Screened cables ............................................................................................................................................... 8

5 Required characteristics ............................................................................................................................ 10

6 Tests methods ................................................................................................................................................ 10

7 Quality assurance ......................................................................................................................................... 17

7.1 Qualification ................................................................................................................................................... 17

7.1.1 General requirements ................................................................................................................................. 17

7.1.2 Qualification conditions ............................................................................................................................. 17

7.1.3 Qualification tests ......................................................................................................................................... 17

7.1.4 Extension of qualification .......................................................................................................................... 17

7.1.5 First article inspection ................................................................................................................................ 18

7.2 Acceptance test .............................................................................................................................................. 18

7.2.1 Required conditions .................................................................................................................................... 18

7.2.2 Production routine tests ............................................................................................................................ 18

7.2.3 Tests prior to delivery ................................................................................................................................. 18

7.2.4 Periodic tests .................................................................................................................................................. 18

8 Identification marking ................................................................................................................................ 18

9 Packaging, labelling and delivery lengths ........................................................................................... 19

9.1 Packaging and labelling .............................................................................................................................. 19

9.2 Delivery lengths............................................................................................................................................. 19

Bibliography ................................................................................................................................................................. 20

---------------------- Page: 4 ----------------------
SIST EN 2235:2023
EN 2235:2022 (E)
European foreword

This document (EN 2235:2022) 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 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 2023, and conflicting national standards shall be

withdrawn at the latest by June 2023.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 2235:2015.

Any feedback and questions on this document should be directed to the users’ national standards body.

A complete listing of these bodies can be found on the CEN website.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: 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 the United

Kingdom.
---------------------- Page: 5 ----------------------
SIST EN 2235:2023
EN 2235:2022 (E)
1 Scope

This document specifies the required characteristics, test methods, qualification and acceptance

conditions of single and multicore cables, screened, jacketed and multicore jacketed cables for use in

aircraft electrical systems.
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 2083, Aerospace series — Copper or copper alloy conductors for electrical cables — Product standard

EN 2084, Aerospace series — Cables, electrical, general purpose, with conductors in copper or copper

alloy — Technical specification

EN 3475-100, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 100: General

EN 3475-201, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 201: Visual

examination

EN 3475-202, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 202: Mass

EN 3475-203, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 203: Dimensions

EN 3475-301, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 301: Electrical

resistance per unit length

EN 3475-302, Aerospace series — Cable, electrical, aircraft use — Test methods — Part 302: Voltage proof

test

EN 3475-303, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 303: Insulation

resistance

EN 3475-304, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 304: Surface

resistance

EN 3475-305, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 305: Overload

resistance

EN 3475-306, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 306: Continuity of

conductors

EN 3475-307, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 307: Corona

extinction voltage

EN 3475-401, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 401: Accelerated

ageing

EN 3475-402, Aerospace series - Cables, electrical, aircraft use - Test methods — Part 402: Shrinkage and

delamination
---------------------- Page: 6 ----------------------
SIST EN 2235:2023
EN 2235:2022 (E)

EN 3475-403, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 403: Delamination

and blocking

EN 3475-404, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 404: Thermal

shock

EN 3475-405, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 405: Bending at

ambient temperature

EN 3475-406, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 406: Cold bend

test

EN 3475-407, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 407: Flammability

EN 3475-408, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 408: Fire

resistance

EN 3475-409, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 409: Air-excluded

ageing

EN 3475-410, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 410: Thermal

endurance

EN 3475-411, Aerospace series — Cables, electrical, aircraft use - Test methods — Part 411: Resistance to

fluids

EN 3475-412, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 412: Humidity

resistance

EN 3475-413, Aerospace series — Cable, electrical, aircraft use — Test methods — Part 413: Wrap back

test

EN 3475-414, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 414: Differential

scanning calorimeter (DSC test)

EN 3475-415, Aerospace series — Cables, electrical, aircraft use - Test methods — Part 415: Rapid change

of temperature

EN 3475-416, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 416: Thermal

stability

EN 3475-501, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 501: Dynamic cut-

through

EN 3475-502, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 502: Notch

propagation

EN 3475-503, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 503: Scrape

abrasion

EN 3475-504, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 504: Torsion

EN 3475-505, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 505: Tensile test

on conductors and strands
---------------------- Page: 7 ----------------------
SIST EN 2235:2023
EN 2235:2022 (E)

EN 3475-506, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 506: Plating

continuity

EN 3475-507, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 507: Adherence of

plating

EN 3475-508, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 508: Plating

thickness

EN 3475-509, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 509: Solderability

EN 3475-510, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 510: Tensile

strength and elongation of extruded insulation, sheath and jacket material

EN 3475-511, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 511: Cable-to-

cable abrasion

EN 3475-512, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 512: Flexure

endurance

EN 3475-513, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 513: Deformation

resistance (Installation with plastic cable ties)

EN 3475-601, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 601: Smoke

density

EN 3475-602, Aerospace series — Cables, electrical, aircraft use — Test methods - Part 602: Toxicity

EN 3475-603, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 603: Resistance to

wet arc tracking

EN 3475-604, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 604: Resistance to

dry arc propagation

EN 3475-605, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 605: Wet short

circuit test

EN 3475-701, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 701: Strippability

and adherence of insulation to the conductor

EN 3475-702, Aerospace series — Cables, electrical, aircraft use — Test methods, Part 702: Screen

pushback capability

EN 3475-703, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 703: Permanence

of manufacturer's marking

EN 3475-704, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 704: Flexibility

EN 3475-705, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 705: Contrast

measurement

EN 3475-706, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 706: Laser

markability
---------------------- Page: 8 ----------------------
SIST EN 2235:2023
EN 2235:2022 (E)

EN 3475-801, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 801: Capacitance

per unit length

EN 3475-802, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 802: Capacitance

unbalance

EN 3475-803, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 803: Capacitance

variation

EN 3475-804, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 804: Velocity of

propagation

EN 3475-805, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 805:

Characteristic impedance
EN 347
...

SLOVENSKI STANDARD
oSIST prEN 2235:2021
01-junij-2021

Aeronavtika - Eno- in večžilni električni kabli, oklopljeni in oplaščeni - Tehnična

specifikacija

Aerospace series - Single and multicore electrical cables, screened and jacketed -

Technical specification
Luft- und Raumfahrt - Ein- und mehradrige geschirmte und ummantelte elektrische
Leitungen - Technische Lieferbedingungen

Série aérospatiale - Câbles électriques, mono et multiconducteurs, blindés et gainés -

Spécification technique
Ta slovenski standard je istoveten z: prEN 2235
ICS:
29.060.20 Kabli Cables
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
oSIST prEN 2235:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 2235:2021
---------------------- Page: 2 ----------------------
oSIST prEN 2235:2021
DRAFT
EUROPEAN STANDARD
prEN 2235
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 49.060 Will supersede EN 2235:2015
English Version
Aerospace series - Single and multicore electrical cables,
screened and jacketed - Technical specification

Série aérospatiale - Câbles électriques, mono et Luft- und Raumfahrt - Ein- und mehradrige geschirmte

multiconducteurs, blindés et gainés - Spécification und ummantelte elektrische Leitungen - Technische

technique Lieferbedingungen

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, Turkey 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

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 2235:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 2235:2021
prEN 2235:2021 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms and definitions ................................................................................................................................... 4

4 Materials and construction of cables ....................................................................................................... 4

4.1 General................................................................................................................................................................ 4

4.2 Materials ............................................................................................................................................................ 4

4.3 Construction of cables ................................................................................................................................... 5

4.3.1 General................................................................................................................................................................ 5

4.3.2 Cabled cores ...................................................................................................................................................... 5

4.3.3 Screened cables ............................................................................................................................................... 5

5 Required characteristics .............................................................................................................................. 7

6 Tests methods .................................................................................................................................................. 7

7 Quality assurance ......................................................................................................................................... 15

7.1 Qualification ................................................................................................................................................... 15

7.1.1 General requirements ................................................................................................................................. 15

7.1.2 Qualification conditions ............................................................................................................................. 15

7.1.3 Qualification tests ......................................................................................................................................... 15

7.1.4 Extension of qualification .......................................................................................................................... 16

7.1.5 First article inspection ................................................................................................................................ 16

7.2 Acceptance test .............................................................................................................................................. 16

7.2.1 Required conditions .................................................................................................................................... 16

7.2.2 Production routine tests ............................................................................................................................ 17

7.2.3 Tests prior to delivery ................................................................................................................................. 17

7.2.4 Periodic tests .................................................................................................................................................. 17

8 Identification marking ................................................................................................................................ 17

9 Packaging, labelling and delivery lengths ........................................................................................... 17

9.1 Packaging and labelling .............................................................................................................................. 17

9.2 Delivery lengths............................................................................................................................................. 18

Bibliography ................................................................................................................................................................. 19

---------------------- Page: 4 ----------------------
oSIST prEN 2235:2021
prEN 2235:2021 (E)
European foreword

This document (prEN 2235:2021) 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 2235:2015.
---------------------- Page: 5 ----------------------
oSIST prEN 2235:2021
prEN 2235:2021 (E)
1 Scope

This document specifies the required characteristics, test methods, qualification and acceptance

conditions of single and multicore cables, screened, jacketed and multicore jacketed cables for use in

aircraft electrical systems.
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 2083, Aerospace series — Copper and copper alloys conductors for electrical cables — Product

standard

EN 2084, Aerospace series — Cables, electrical, general purpose, with conductors in copper or copper

alloy — Technical specification
EN 3475, Aerospace series — Cables, electrical, aircraft use — Test methods

EN 3838, Aerospace series — Requirements and tests on user-applied markings on aircraft electrical

cables

EN 4434, Aerospace series — Copper or copper alloy lightweight conductors for electrical cables —

Product standard (Normal and tight tolerances)
ISO 2574, Aircraft — Electrical cables — Identification marking
ISO 8815, Aircraft — Electrical cables and cable harnesses — Vocabulary
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 8815 and EN 3475-100 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at http://www.electropedia.org/
4 Materials and construction of cables
4.1 General

The individual cores shall be qualified to EN 2083 or EN 4434, EN 2084 and the product standards.

4.2 Materials
The materials shall conform to the product standard.
And all its parts quoted in this document.

Published by: ISO International Organization for Standardization http://www.iso.ch/.

---------------------- Page: 6 ----------------------
oSIST prEN 2235:2021
prEN 2235:2021 (E)
4.3 Construction of cables
4.3.1 General

The permissible operating temperature of conductors shall not be lower than the maximum operating

temperature of the cable as a whole.
4.3.2 Cabled cores

The lay length of the outer lay shall not be less than eight times and not more than 16 times the nominal

diameter of the cabled cores.
The core shall not be spliced.
Where filler cores are used, this shall be specified in the product standard.
4.3.3 Screened cables
4.3.3.1 General

The individual strands used for the screen shall be free from kinks, loops or breaks; their surface shall

be free from corrosion and other contamination. They shall satisfy the mechanical tests in EN 3475-505

to EN 3475-508 before use.
The screen shall be in contact with all the cabled cores.

Where spiral screening is used, the lay direction shall be contrary to that of the cabled cores.

4.3.3.2 Joints

Joints in the individual strands of the screen shall be made by soldering or by laying the individual

strands together over a length of at least 10 mm.

There shall be no more than one joint per 3 m cable length (measured between different individual

strands).
4.3.3.3 Braid screen pushback capability
In accordance with Table 1, test 6.48.
4.3.3.4 Angle of spiral screening or braiding

The angle γ of spiral screening or braiding (as shown in Figure 1), measured against the longitudinal

axis of the cable shall be at least 10°.
4.3.3.5 Screen coverage

The screen shall have a coverage β of at least 90 % for spiral screening and at least 85 % for braiding.

---------------------- Page: 7 ----------------------
oSIST prEN 2235:2021
prEN 2235:2021 (E)
Figure 1 — Screen coverage
The cable covering is calculated using the following formula:
— for spirals:

U = π (D + d) and S = π (D + d) tan α F = U’ Z/U = n d Z/[π (D + d) sin α] β = F × 100 (%)

— for braids:
U = π (D + 2 d) and S = π (D + 2 d) tan α
— for spiral screen:
the maximum length T of the non-covered area is 2 mm, and

the relative aperture (versus lay length) of the screening 100 T/L shall be less than 5 % (see

Figure 2).
Figure 2
---------------------- Page: 8 ----------------------
oSIST prEN 2235:2021
prEN 2235:2021 (E)
...

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