EN 3197:2010

SLOVENSKI STANDARD
01-maj-2011
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Aerospace series - Design and installation of aircraft electrical and optical
interconnection systems
Luft- und Raumfahrt - Konstruktion und Installation elektrischer und optischer
Verkabelung in Luftfahrzeugen
Série aérospatiale - Conception et installation des organes de raccordements électriques
et à fibres optiques sur avions
Ta slovenski standard je istoveten z: EN 3197:2010
ICS:
49.090 2SUHPDLQLQVWUXPHQWLY On-board equipment and
]UDþQLKLQYHVROMVNLKSORYLOLK instruments
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 3197
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2010
ICS 49.060; 49.090
English Version
Aerospace series - Design and installation of aircraft electrical
and optical interconnection systems
Série aérospatiale - Conception et installation des organes Luft- und Raumfahrt - Konstruktion und Installation
de raccordements électriques et à fibres optiques sur elektrischer und optischer Verkabelung in Luftfahrzeugen
avions
This European Standard was approved by CEN on 30 July 2010.

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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3197:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3
ORGANISATION OF THIS STANDARD (Detailed organisation may be found in Annex A) .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 Limitations .6
5 General requirements .6
6 Selection of EWIS and OFIS Components . 19
7 EWIS Components Identification . 45
8 Separation and principles to apply . 48
9 Installation and manufacturing principles . 60
10 Modification and repairs by STC applicants . 84
11 EWIS and OFIS Safety . 86
Annex A (informative) EN 3197 detailed content . 87
Annex B (normative) Main normative references and ASD-STAN Technical Reports per family
of products . 95
B.1 Quality and General standards . 95
B.2 Wires and cables. 96
B.3 Optical fibre cables, connectors and contacts . 98
B.4 Connectors and contacts . 99
B.5 Protective devices . 102
B.6 Switching devices . 103
B.7 Terminal junctions . 103
B.8 Terminal lugs and in-line splice . 104
B.9 Ties . 104
B.10 Solder sleeves . 104
B.11 Bonding leads . 105
B.12 Clamps . 105
B.13 Protective parts . 105
B.14 Identification parts . 106
B.15 Installation Components . 106
B.16 Lamps . 107
Annex C (informative) Differences of electrochemical potentials between some conductive
materials (in mV) . 108

Foreword
This document (EN 3197:2010) 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 2011, and conflicting national standards shall be withdrawn at
the latest by June 2011.
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.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
ORGANISATION OF THIS STANDARD
(Detailed organisation may be found in Annex A)
1 Scope page 5
Description of the aim of this document.
2 Normative references page 5
List of Normative references used.
3 Terms and definitions page 6
List of particular definitions or mentions of particular applicable documents.
4 Limitations page 6
Applicability of this document.
5 General requirements page 6
General and important considerations, plus specific requirements linked to particular areas of use.
6 Selection of EWIS and OFIS Components page 19
Guideline for the choice of necessary components.
7 EWIS and OFIS Components Identification page 45
Description of necessary identifications for components, bundles, equipements and repairs.
8 Separation and principles to apply page 48
Rules to satisfy for a good integration and behaviour of systems.
9 Installation and manufacturing principles page 60
Description of installation and manufacturing principles.
10 Modification and repairs by STC applicants page 84
11 EWIS and OFIS Safety page 86
Safety analysis.
NOTE Inside this standard, texts in italic come from official texts and cannot be modified without verification.
1 Scope
This European standard provides instructions on the methods to be used when designing, selecting,
manufacturing, installing, repairing or modifying the aircraft electrical and optical interconnection networks,
now called Electrical Wiring Interconnection System (EWIS), and Optical Fibre Interconnection Systems
(OFIS), subjects to the limitations defined in Clause 4 of this standard.
The general content of this standard is described in page 2.
A detailed content of this standard is given in Annex A.
This standard lists all the relevant European standards related to EWIS and OFIS in Annex B.
2 Normative references
The following referenced documents are indispensable for the application 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 60270, High-voltage test techniques — Partial discharge measurements (IEC 60270:2000)
ISO 2574, Aircraft — Electrical cables — Identification marking
ISO 2685, Aircraft — Environmental test procedure for airborne equipment — Resistance to fire in designated
fire zones
ISO 4046-1, Paper, board, pulps and related terms — Vocabulary — Part 1: Alphabetical index
ISO 7137, Aircraft — Environmental conditions and test procedures for airborne equipment
1)
MIL-DTL-22520G, Revision G General Specification for Crimping Tools, Wire Termination — Entire Set
1)
MIL-STD-202, Test method standard electronic and electrical component parts
1)
MIL-T-43435B, Military specification tape, lacing and tying
2)
TR 4684, Aerospace series — Electrical technology and components definitions
2)
TR 9535, Aerospace series — Substance declaration
2)
TR 9536, Aerospace series — Declarable Substances Recommended Practice
3)
AS 81824/1, Splice, electric, permanent, crimp style copper, insulated, environment resistant, class 1
AS 83519, Shield termination, solder style, insulated, heat-shrinkable, environment resistant with pre installed
3)
leads for cables having tin or silver plated shields (class I)

1) Published by: Department of Defense (DoD), http://www.defenselink.mil/.
2) Published as ASD-STAN Technical Report at the date of publication of this standard by Aerospace and Defence
Industries Association of Europe-Standardization (ASD-STAN), (www.asd-stan.org).
3) Published by: Society of Automotive Engineers (SAE), (www.sae.org).
ASTM D 1868, Standard Test Method for Detection and Measurement of Partial Discharge (Corona) Pulses in
4)
Evaluation of Insulation Systems
NOTE Related to EWIS and OFIS, all today existing ASD Normative references per family of products may be found
in Annex B.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in TR 4684 and the following apply.
3.1
Design Authority
in this document, this term covers the Companies, in charge of the original design or to give the design
agreement for which Certification will be required from the Regulatory Authorities
3.2
Regulatory Authority
in this document, this term covers the Organisations in charge to write rules to satisfy, to survey the design
and to grant Navigability Certificate, like EASA and FAA
4 Limitations
It is recognized that the installation practices contained in this standard do not necessarily represent the full
requirements for a safe and satisfactory electrical and optical interconnection system.
In the event of a conflict between the text of this document and the references cited herein, the text of this
document takes precedence. However, nothing written in this standard shall override the specific
requirements of a Design Authority, the Airworthiness Requirements, applicable laws or any regulation from
the regulatory authorities, unless a specific exemption has been obtained.
5 General requirements
5.1 Applicable Rulemaking
The main rulemakings to satisfy for the definition of the various possible electrical installations on large
aircrafts are coming from:
 Design technical requirements
From the EASA European Aviation Safety Agency
...