1、ASD STANDARD NORME ASD ASD NORM prEN 3197 Edition P 2 January 2010 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Avenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: : 621.315.2:681.7.068:620.1:629.7 Su
2、persedes edition P 1 of August 1993 Descriptors: ENGLISH VERSION Aerospace series Design and installation of aircraft electrical and optical interconnection systems Srie arospatiale Conception et installation des organes de raccordements lectriques et fibres optiques sur avions Luft- und Raumfahrt K
3、onstruktion und Installation elektrischer und optischer Verkabelung in Luftfahrzeugen This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the Europe
4、an Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, withou
5、t re-identification of the standard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national me
6、mbers have then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 31 January 2010 Comments should be sent within six months after the date of publication to ASD-
7、STAN Electrical Domain Copyright 2010 by ASD-STAN prEN 3197:2010 (E) 2 Contents Page 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 Limitations6 5 General requirements6 6 Selection of EWIS and OFIS Compon
8、ents . 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 85 Annex A (informative) EN 3197 detailed content 87 Annex B (normative) Main normative refe
9、rences and ASD-STAN Technical Reports per family of products. 95 B.1 Quality and General standards 95 B.1.1 Quality 95 B.1.2 Vocabulary. 95 B.1.3 Installation. 95 B.1.4 General standards 95 B.2 Wires and cables. 96 B.2.1 Test Methods. 96 B.2.2 Product Norms 96 B.2.3 Implementation standards . 98 B.2
10、.4 Particular documents . 98 B.3 Optical fibre cables, connectors and contacts 98 B.3.1 Optical fibre cables. 98 B.3.2 Optical connectors and contacts 99 B.4 Connectors and contacts. 99 B.4.1 Test Methods. 99 B.4.2 Product Norms 100 B.4.3 Implementation standards . 102 B.4.4 Particular documents . 1
11、02 B.5 Protective devices 102 B.5.1 Test Methods. 102 B.5.2 Product Norms 102 B.5.3 Implementation standards . 103 B.6 Switching devices. 103 B.6.1 Test Methods. 103 B.6.2 Product Norms 103 B.6.3 Implementation standards . 103 B.7 Terminal junctions 103 B.7.1 Test Methods. 103 B.7.2 Product Norms 10
12、3 B.7.3 Implementation standards . 103 prEN 3197:2010 (E) 3 B.7.4 Particular documents104 B.8 Terminal lugs and in-line splice.104 B.8.1 Test Methods .104 B.8.2 Product Norms.104 B.9 Ties104 B.9.1 Test Methods .104 B.9.2 Product Norms.104 B.9.3 Implementation standards104 B.10 Solder sleeves .104 B.
13、10.1 Test Methods .104 B.10.2 Product Norms.105 B.10.3 Implementation standards105 B.11 Bonding leads105 B.11.1 Test Methods .105 B.11.2 Product Norms.105 B.12 Clamps105 B.12.1 Test Methods .105 B.12.2 Product Norms.105 B.12.3 Implementation standards105 B.13 Protective parts .105 B.13.1 Test Method
14、s .105 B.13.2 Product Norms.106 B.13.3 Implementation standards106 B.14 Identification parts 106 B.14.1 Test Methods .106 B.14.2 Product Norms.106 B.14.3 Implementation standards106 B.15 Installation Components.106 B.15.1 Test Methods .106 B.15.2 Product Norms.107 B.15.3 Implementation standards107
15、B.16 Lamps .107 B.16.1 Test Methods .107 B.16.2 Product Norms.107 B.16.3 Implementation standards107 Annex C (informative) Differences of electrochemical potentials between some conductive materials (in mV)108 prEN 3197:2010 (E) 4 ORGANISATION OF THIS STANDARD (Detailed organisation may be found in
16、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 Gener
17、al 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 iden
18、tifications 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 50 Description of installation and manufacturing principles. 10 Modification a
19、nd repairs by STC applicants page 84 11 EWIS and OFIS Safety page 85 Safety analysis. NOTE Inside this standard, texts in italic come from official texts and cannot be modified without verification. prEN 3197:2010 (E) 5 1 Scope This standard provides instructions on the methods to be used when desig
20、ning, 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 chapter 4 of this stan
21、dard. 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
22、 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 ISO 2574, Aircraft Electrical cables I
23、dentification marking ISO 7137, Aircraft Environmental conditions and test procedures for airborne equipment MIL-C-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, Mi
24、litary specification tape, lacing and tying 1)TR 4684, Aerospace series Electrical technology and components definitions2)TR 9535, Aerospace series Substance declaration 2)TR 9536, Aerospace series Declarable Substances Recommended Practice 2)AS 81824/1, Splice, electric, permanent, crimp style copp
25、er, insulated, environment resistant, class 1 3)AS 83519, Shield termination, solder style, insulated, heat-shrinkable, environment resistant with pre installed leads for cables having tin or silver plated shields (class I) 3)1) Published by: Department of Defense (DoD), the Pentagon, Washington, DC
26、 20301, USA. 2) Published as ASD-STAN Technical Report at the date of publication of this standard. 3) Published by: Society of Automotive Engineers, Inc. (SAE), 400 Commonwealth Drive, Warrendale, PA 15096-0001, USA. prEN 3197:2010 (E) 6 ASTM D 1868, Standard Test Method for Detection and Measureme
27、nt of Partial Discharge (Corona) Pulses in Evaluation of Insulation Systems 4)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 46
28、84 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
29、 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 e
30、lectrical 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 Airwor
31、thiness 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 aircra
32、fts are coming from: Design technical requirements From the EASA European Aviation Safety Agency (CS 25) and the FAR Federal Aviation Regulation (14CFR part 25). Organisation requirements From the EASA European Aviation Safety Agency (IR 21) and the FAR Federal Aviation Regulation (14CFR part 21). 4
33、) Published by: American Society For Testing and Materials (ASTM), 1916 Race St., Philadelphia PA 19103, USA. prEN 3197:2010 (E) 7 Important advices: a) From the P2 issue, this standard includes the EWIS concept and associated consequences which was introduced in the regulation by the FAA in Novembe
34、r 2007 and by the EASA in autumn 2008. This was also the opportunity for the authorities to group all the electrical requirements: the rules 25.17xx. b) CS or FAR 23, 27 and 29 which concern small aircraft, small and large helicopters were not updated in-line. 5.2 EWIS Definition The definition of t
35、he aircraft electrical interconnection network, now called Electrical Wiring Interconnection System (EWIS) is now given in the regulation. The retained text, coming from the EASA, is the following: CS 25.1701 Electrical Wiring Interconnection System Definition (a) Electrical wiring interconnection s
36、ystem (EWIS) means any wire, wiring device, or combination of these, including termination devices, installed in any area of the airplane for the purpose of transmitting electrical energy between two or more intended termination points. Except as provided for in Subclause (c) of this Subclause, this
37、 includes: 1) Wires and cables. 2) Bus bars. 3) The termination point on electrical devices, including those on relays, interrupters, switches, contactors, terminal blocks and circuit breakers, and other circuit protection devices. 4) Connectors, including feed-through connectors. 5) Connector acces
38、sories. 6) Electrical grounding and bonding devices and their associated connections. 7) Electrical splices. 8) Materials used to provide additional protection for wires, including wire insulation, wire sleeving, and conduits that have electrical termination for the purpose of bonding. 9) Shields or
39、 braids. 10) Clamps and other devices used to route and support the wire bundle. 11) Cable tie devices. 12) Labels or other means of identification. 13) Pressure seals. (b) The definition in Subclause (a) of this Subclause covers EWIS components inside shelves, panels, racks, junction boxes, distrib
40、ution panels, and back-planes of equipment racks, including, but not limited to, circuit board back-planes, wire integration units and external wiring of equipment. (c) Except for the equipment indicated in Subclause (b) of this Subclause, EWIS components inside the following equipment, and the exte
41、rnal connectors that are part of that equipment, are excluded from the definition in Subclause (a) of this Subclause: 1) Electrical equipment or avionics that is qualified to environmental conditions and testing procedures when those conditions and procedures are: i) Appropriate for the intended fun
42、ction and operating environment, and ii) Acceptable to the Agency. 2) Portable electrical devices that are not part of the type design of the aeroplane. This includes personal entertainment devices and laptop computers. 3) Fiber optics. prEN 3197:2010 (E) 8 5.3 OFIS Definition The definition of the
43、aircraft optical fibre interconnection network, now called Optical Fibre Interconnection System (OFIS) was created by similarity. The retained text is the following: OFIS means any fibre or cable, including termination devices, installed in any area of the aircraft for the purpose of transmitting op
44、tical signals between two or more intended termination points. Except as provided for in Subclause (c) of this Subclause, this includes: 1) Fibres and cables. 2) Optical Data buses. 3) The termination point on fibre optic transmitting sources and receiving devices protection devices. 4) Connectors,
45、including feed-through connectors. 5) Connector accessories. 6) Fibre optic splices. 7) Materials used to provide additional protection for fibres and cables, including insulation, and conduit. 8) Clamps and other devices used to route and support the cable bundle. 9) Cable tie devices. 10) Labels o
46、r other means of identification. 11) Pressure seals. a) The definition in Subclause (a) of this Subclause covers OFIS components inside shelves, panels, racks, junction boxes, distribution panels, and back-planes of equipment racks. b) Except for the equipment indicated in Subclause (b) of this Subc
47、lause, OFIS components inside the following equipment, and the external connectors that are part of that equipment, are excluded from the definition in Subclause (a) of this Subclause: 1) Fibre optic equipment or avionics that is qualified to environmental conditions and testing procedures when thos
48、e conditions and procedures are: i) Appropriate for the intended function and operating environment, and ii) Acceptable to the Agency Particular informations on OFIS may be found in EN 4533-001 to EN 4533-004. (See also particular Annex B3). 5.4 Design precedence Design of the EWIS and OFIS shall co
49、nform to the following precedence: 1st Safety; 2nd System requirements; 3rd The ease of maintenance, removal and replacement of the cabling; 4th Cost effective aircraft production. Cabling shall be fabricated and installed so as to achieve the following: a. Maximum reliability; b. Minimum interference and coupling between systems; c. Accessibility for inspection and maintenance including cleaning; d. Prevention of damage. prEN 3197:2010 (E) 9 5.5 Selection considerations Parts, materials, directives and procedures covered by existing European Standards
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