EN 3475-411-2018 Aerospace series - Cables electrical aircraft use - Test methods - Part 411 Resistance to fluids.pdf

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1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Aerospace series - Cables, electrical, aircraft use - Test methodsPart 411: Resistance to fluidsBS EN 3475411:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3475-411 August 2018 ICS 49.060 Supersedes EN 3475-4

2、11:2014English Version Aerospace series - Cables, electrical, aircraft use - Test methods - Part 411: Resistance to fluids Srie arospatiale - Cbles lectriques usage aronautique - Mthodes dessais - Partie 411 : Rsistance aux fluides Luft- und Raumfahrt - Elektrische Leitungen fr Luftfahrtverwendung -

3、 Prfverfahren - Teil 411: Bestndigkeit gegen Flssigkeiten This European Standard was approved by CEN on 13 November 2017. 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 witho

4、ut 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 l

5、anguage 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, Den

6、mark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN

7、COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3475-411:2018 ENa

8、tional forewordThis British Standard is the UK implementation of EN 3475411:2018. It supersedes BS EN 3475411:2014, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology.A list of organizations r

9、epresented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978

10、0 580 99479 1ICS 49.060Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH ST

11、ANDARDBS EN 3475411:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3475-411 August 2018 ICS 49.060 Supersedes EN 3475-411:2014English Version Aerospace series - Cables, electrical, aircraft use - Test methods - Part 411: Resistance to fluids Srie arospatiale - Cbles lectriques usage aronau

12、tique - Mthodes dessais - Partie 411 : Rsistance aux fluides Luft- und Raumfahrt - Elektrische Leitungen fr Luftfahrtverwendung - Prfverfahren - Teil 411: Bestndigkeit gegen Flssigkeiten This European Standard was approved by CEN on 13 November 2017. CEN members are bound to comply with the CEN/CENE

13、LEC 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 o

14、r 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 off

15、icial 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

16、, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN A

17、ll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3475-411:2018 EBS EN 3475411:2018EN 3475-411:2018 (E) 2 Contents Page European foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Test fluids 5 5 Procedures 5 6 Re

18、quirements . 7 BS EN 3475411:2018EN 3475-411:2018 (E) 3 European foreword This document (EN 3475-411:2018) 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 Associat

19、ion, 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,

20、 at the latest by February 2019, and conflicting national standards shall be withdrawn at the latest by February 2019. 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 su

21、ch patent rights. This document supersedes EN 3475-411:2014. 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

22、, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 3475411:2018

23、EN 3475-411:2018 (E) 4 1 Scope This European Standard specifies two methods of determining the fluid resistance of a finished cable. Method 1: occasional contamination. Method 2: contamination test. It shall be used together with EN 3475-100 and EN 3909. 2 Normative references The following document

24、s 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 3475-100, Aerosp

25、ace 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 3475-203, Aerospace series Cables, electrical, aircraft use Test methods Part 203: Dimensions EN 3475-302, Aerospace

26、series Cables, electrical, aircraft use Test methods Part 302: Voltage proof test EN 3475-405, Aerospace series Cables, electrical, aircraft use Test methods Part 405: Bending at ambient temperature EN 3475-503, Aerospace series Cables, electrical, aircraft use Test methods Part 503: Scrape abrasion

27、 EN 3909, Aerospace series Test fluids for electrical and optical components and sub-assemblies ISO 1817, Rubber, vulcanized or thermoplastic Determination of the effect of liquids MIL-PRF-87937D, Performance specification: cleaning compound, aerospace equipment 1)ASTM D740, Standard Specification f

28、or Methyl Ethyl Ketone2) AMS 1476B, Aircraft toilet flush fluid2)3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.or

29、g/ ISO Online browsing platform: available at http:/www.iso.org/obp 1) Published by: DoD National (US) Mil. Department of Defense. http:/www.defenselink.mil/ 2) Published by: ASTM National (US) American Society for Testing and Materials. http:/www.astm.org/ BS EN 3475411:2018EN 3475-411:2018 (E) 5 4

30、 Test fluids Unless otherwise specified in the product standard, all fluids listed in EN 3909 are mandatory. 5 Procedures 5.1 General 5.1.1 Unless specified in the product specification method 2 shall be used. 5.1.2 For each fluid to be tested, take two (2) clean specimen at least off 1 m in length

31、from a finished cable. Where large cables are being tested a single specimen may be divided into two (2) after fluid exposure if the resulting pieces are of sufficient length to allow the post tests to be correctly carried out. Strip approximately 25 mm of both ends of each specimen. Measure the cab

32、le diameter EN 3475-203. 5.2 Method 1: occasional contamination test 5.2.1 Mount the test samples in their normal operating configuration and maintain at room temperature or as specified in the product standard. 5.2.2 Dip, brush or spray the test sample with the specified fluid which shall be mainta

33、ined at the test temperature given in Table 1, or as specified in the product standard. Ensure that the entire surface of the sample is thoroughly wetted. Allow the sample to drain naturally for 5 min to 10 min; shaking or wiping is not permitted. Transfer the test sample to a test chamber and maint

34、ain at the test temperature for the time specified in the product standard. If not specified, the parameters shall be (65 2) C for +08160 h. 5.2.3 At the end of the period allow the test sample to return to room temperature, and remain at room temperature for between 1 h and 2 h, before being subjec

35、ted to final examination. 5.2.4 Repeat this procedure, if specified by the product standard. 5.3 Method 2: contamination test for aircraft applications (to be conducted unless otherwise specified in the product specifications) 5.3.1 For each fluid to be tested, take two (2) clean specimen at least o

36、ff 1 m in length from a finished cable. Where large cables are being tested a single specimen may be divided into two (2) after fluid exposure if the resulting pieces are of sufficient length to allow the post tests to be correctly carried out. 5.3.2 Unless otherwise stated in the product standard,

37、each specimen shall be wound seven (7) complete turns onto a mandrel of diameter 12 times the maximum specified outer cable diameter without torsion, but with sufficient tension to ensure the specimen remains fully in contact with the mandrel. Remove the mandrel (if necessary the specimen may be tie

38、d using lacing cord so as to retain the coils). BS EN 3475411:2018EN 3475-411:2018 (E) 6 5.3.3 Immerse the test two (2) specimen fully in one of the specified test fluid with the ends 150 mm above the surface of the fluid which shall be maintained at the temperature specified in Table 1 for each of

39、fluids listed in EN 3909 or the cable maximum rated temperature whichever is the lowest for (24 1) h. 5.3.4 Remove the specimen from the fluid and transfer them to a chamber at (65 2) C for +08160 h. 5.3.5 At the end of the period allow the test sample to cool to room temperature, and remain at room

40、 temperature for between 1 h and 2 h, before being subjected to final examination. Table 1 (1 of 2) Fluid No. Fluid type, see EN 3909 Test fluid Flash point Test temperature 1a Fuels Gasoline ISO 1817 Liquid B 4 40 1b Kerosene ISO 1817 Liquid F 40 70 2a Hydraulic fluid Phosphate ISO 1817 Liquid 103

41、160 70 2b Silicone NATOS1714 140 80 2c Mineral NATOH-520, OM-18 80 80 3a Oils Mineral NATOO1176, OMD-90 200 125 3b Mineral NATOO142, OM-12 120 70 3c Synthetic Diester ISO 1817 Liquid 101 260 150 3d Synthetic Polyol ester NATO160 OX-26 15 150 4a Cleaning fluids Solvent Isopropanol 12 50 4b Solvent Et

42、hanol NATOS-738 (Note 1) 16 25 4c Solvent Propanol 25 % + White spirit 75 % v/v 25 4d Solvent Methylethylketone ASTM-D740 4 25 4e Detergent MIL-PRF-87937D Type IV 25 4f Sullage AMS 1476B 5 % solution in water v/v 25 BS EN 3475411:2018EN 3475-411:2018 (E) 7 Table 1 (2 of 2) Fluid No. Fluid type, see

43、EN 3909 Test fluid Flash point Test temperature 5a De-icing Runway 50 % Inhibited Potassium Acetate in Water v/v 25 5b Ground Ethylene Glycol 80 % + Water 20 % v/v 25 5d Flight NATO-S-745 AL-5 25 6 Fire Extinguishants See Note 2. 7a Cooling ISO 1817 Liquid 103 177 25 NOTE 1 This fluid was not includ

44、ed in the previous issue and should only be used in standards published after the publication date of this document unless listed in the product standard NOTE 2 Because of the nature of these products in their normal condition in service i.e. gaseous, it is impossible to perform Fluid immersion test

45、s in a liquid state under standard Laboratory conditions. Therefore no testing will be performed; research into alternative fluids and or test methods is being undertaken at the time of writing of this standard. Due to restrictions applicable by local laws, fire extinguishants shall not be discharge

46、d in non-critical situations. 6 Requirements 6.1 The following fluid exposure the specimen shall be. 6.1.1 Visually inspected EN 3475-201. a) There shall be no crazing or de-lamination of the insulation and covering; b) Marking shall remain legible; c) All colours shall remain recognizable. 6.1.2 Th

47、e cable diameter shall be measured EN 3475-203 variation of the overall diameter shall not exceed 5 %. 6.2 The coiled part of each sample is then straightened and subjected to one of the following tests. 6.2.1 Specimen (A) shall be subject to the ambient bend test EN 3475-405 followed by the voltage

48、 proof test EN 3475-302, as defined in the product standard. 6.2.2 Specimen (B) shall be subject to: a) voltage proof test EN 3475-302, as defined in the product standard; b) scrape abrasion test, according to EN 3475-503 as defined in the product standard for ambient temperature. BS EN 3475411:2018

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