1、Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 28/02/2008 07:44, Uncontrolled Copy, (c) BSIg49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58a
2、nd sub-assembliesThe European Standard EN 3909:2007 has the status of a British StandardICS 49.060Aerospace series Test fluids and test methods for electric components BRITISH STANDARDBS EN 3909:2007BS EN 3909:2007Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 28/02/2008 07:44, Uncontrolled
3、Copy, (c) BSIThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2008 BSI 2008ISBN 978 0 580 56720 9Amendments/corrigenda issued since publicationDate Commentscontract. Users are responsible for its correct application.Compliance with
4、a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard is the UK implementation of EN 3909:2007. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology, to Panel ACE/
5、6/-/3, Aerospace Connectors.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 3909December 2007ICS 49.060English VersionAer
6、ospace series - Test fluids and test methods for electriccomponents and sub-assembliesSrie arospatiale - Fluides dessais et mthodes dessaispour composants et sous-ensembles lectriquesLuft- und Raumfahrt - Prfflssigkeiten und Prfverfahrenfr elektrische Bauelemente und UntergruppenThis European Standa
7、rd was approved by CEN on 10 May 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such na
8、tionalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and n
9、otified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Ma
10、lta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploi
11、tation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3909:2007: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 28/02/2008 07:44, Uncontrolled Copy, (c) BSI2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Test fluids.5 4 Test samples 5 5 Cl
12、eaning5 6 Initial examination6 7 Test methods6 8 Method 1 .6 9 Method 2 .6 10 Final examination.10 11 Information to be supplied in the product standard 10 EN 3909:2007Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 28/02/2008 07:44, Uncontrolled Copy, (c) BSI3 Foreword This document (EN 3909
13、:2007) 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
14、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 2008, and conflicting national standards shall be withdrawn at the latest by
15、June 2008. 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 o
16、rganizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal
17、, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 3909:2007Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 28/02/2008 07:44, Uncontrolled Copy, (c) BSI4 1 Scope This standard specifies tests to demonstrate that components and sub-assemblies will not be adver
18、sely affected by contaminating fluids to which they may be exposed. The fluids listed are representative of those commonly used and encountered in airborne and ground operations, and align with the requirements of Section 11 Fluids susceptibility of ISO 7137. Fluids not listed, and for which a test
19、is required, should be included in the product standards. These tests are not intended to demonstrate the suitability of components and sub-assemblies to perform in continuous contact with a fluid e.g. on an immersed fuel pump, nor are they tests to demonstrate immunity from electrolytic corrosion.
20、It shall be used together with TR 4542. 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 amendme
21、nts) applies. ISO 1817, Rubber, vulcanized Determination of the effect of liquids. ISO 7137, Aircraft Environmental conditions and test procedures for airborne equipment. ISO 11075, Aircraft De-icing/anti-icing fluids ISO type I. ISO 11078, Aircraft De-icing/anti-icing fluids ISO types II, III and I
22、V. AMS 1428, Fluid, aircraft deicing/anti-icing, non-newtonian (pseudoplastic), SAE types II, III, and IV. 1)AMS 1476B, Deodorant, Aircraft Toilet. 1)MIL-PRF-680B, Degreasing solvent.2)MIL-PRF-6085D, Lubricating oil: Instrument, aircraft, low volatility. 2)MIL-PRF-7808L, Lubricating oil, aircraft tu
23、rbine engine, synthetic base (NATO code number O-148). 2)MIL-PRF-7870C, Lubricating oil: General purpose, low temperature. 2)MIL-PRF-23699F, Lubricating oil, aircraft turbine engine, synthetic base, NATO code number O-156.2)MIL-PRF-87252C, Coolant fluid, hydrolytically stable, dielectric. 2)MIL-PRF-
24、87937D, Cleaning compound, aerospace equipment. 2)QPL 5606-31, Hydraulic fluid, petroleum base, aircraft, missile and ordnance. 2)STANAG 3748, Hydraulic fluid, petroleum (H-515, H-520 and C-635) and polyalphaolefin (H-537, H-538 and H-544). 3)TR 4542, Aerospace series Guidance for fluids tests Techn
25、ical report. 4) 1) Published by: Society of Automotive Engineering (SAE), 400 Commonwealth Drive, Warrendale, PA 15096-0001, USA. 2) Published by: Department of Defence (DOD), The Pentagon, Washington D.C. 20301, USA. 3) Published by: NATO Military Agency for Standardization (MAS); B-1110 Brussels,
26、Belgium. 4) In preparation at the date of publication of this standard. EN 3909:2007Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 28/02/2008 07:44, Uncontrolled Copy, (c) BSI5 3 Test fluids The product standard shall specify the required test fluids which shall, wherever possible, be select
27、ed from the list given in Table 1. Each fluid has been specified as being representative of a group of fluids. The product standard shall also specify any additional fluids not listed in Table 1 for which a test is required. 4 Test samples 4.1 The test sample shall be either: a component; or an asse
28、mbly. Where size or availability of an assembly shall not permit a full test, a specially selected representation of materials, finishes and components used in an assembly shall be used as a test sample. The test samples for materials or finishes should have a minimum surface area, where possible, o
29、f 20 cm2. 4.2 Unless otherwise indicated in the technical specification, the following details shall be specified in the product standard: the number and type of sample to be tested. 5 Cleaning 5.1 Initial cleaning Unless otherwise specified in the product standard, the test sample shall be thorough
30、ly cleaned to remove unrepresentative coatings i.e. preservatives, grease or contaminants. When a separate sample is specified for each fluid, only initial cleaning applies. 5.2 Intermediate cleaning If sequential testing is required, the product standard shall specify any necessary cleaning method.
31、 When more than one fluid is to be applied to a test sample, the following should be considered: The need to assess the effect of individual fluids; The possibility of synergistic effects from applying successive fluids; If the order of exposure to fluids in service life is known, or if the exposure
32、 to fluids recognized as having synergistic effects is known and is possible in service life, then this order should be specified; Whether the test sample should be cleaned between or after the test. NOTE Choice of cleaning fluid shall clearly not result in further contamination. Some of the specifi
33、ed fluids may be used as a cleaning fluid (e.g. aviation fuel, solvents, cleaning fluids) otherwise a fluid known to be used in normal cleaning procedures should be used. 5.3 Final cleaning The product standard shall specify any necessary cleaning method prior to final examination. EN 3909:2007Licen
34、sed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 28/02/2008 07:44, Uncontrolled Copy, (c) BSI6 6 Initial examination 6.1 The test sample shall be visually examined and its condition recorded. 6.2 The product standard shall specify any measurements or tests required. 7 Test methods 7.1 Two test meth
35、ods are given in Clause 8 and Clause 9. The product standard shall specify the test or tests to be used and the order of application of the test fluids if sequential testing is required. For information on the selection of the appropriate method, see TR 4542. 7.2 The product standard shall specify w
36、hether the test sample is to be connected electrically or mechanically and, if it is required to operate before, during or after the procedure, the operating parameters shall also be defined. NOTE This document may involve the use of hazardous substances and/or processes. All relevant healthy and sa
37、fety procedures currently in force should be observed. 8 Method 1 8.1 Mount the test sample in its normal operating configuration and maintain at room temperature, or as specified in the product standard. 8.2 Dip, brush or spray the test sample with the specified fluid which shall be maintained at t
38、he 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. 8.3 Transfer the test sample to a test chamber and maintain a
39、t the test temperature for the time specified in the product standard. If not specified, the parameters shall be (65 2) C for (16008+) h. 8.4 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 subjected t
40、o final examination. 8.5 Repeat this procedure, if specified by the product standard. 9 Method 2 9.1 Immerse the test sample fully in the specified test fluid which shall be maintained at the temperature and for the time stated in the product standard. If the temperature and/or duration are not spec
41、ified the temperature shall be as given in Table 1 and the duration shall be a minimum of (24 1) h. 9.2 Transfer the test sample to a test chamber and maintain at the test temperature and for the time specified in the product standard. If not specified, the parameters shall be (65 2) C for (16008+)
42、h. 9.3 At the end of the period allow the test sample to cool to room temperature, and remain at room temperature for between 1 h and 2 h, before being subjected to final examination. NOTE This procedure is not intended to demonstrate the operation of equipment which is normally immersed in a fluid.
43、 EN 3909:2007Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 28/02/2008 07:44, Uncontrolled Copy, (c) BSITable1 Listof fluidsFluidsto beusedforthetestObservationsorcorresponding symbolsFluidsfamilyTestfluid NoTypeBase Alternative TesttemperatureC 2 CFlash-point C Ref. Standard1 Gasoline Tolue
44、ne 30 % Isooctane70 %v/v ISO1817 LiquidB 40 4 AVGAS Fuels2 KeroseneISO1817 LiquidF 70 40 a F44 F34 F35 F40 AVCAT/FS11 AVTUR/FS11 AVTUR AVTAG3 Phosphatebase ISO1817 Liquid103 70 160 Syntheticfluid H 580 NSA307110 Type IV SYDROL 500B4 SKYDROL 5 MOBIL EXXON4 Silicone base NATO-S-1714 80 140 NATO-S-1714
45、 ZX-42 Hydraulic fluid 5 Mineral base Stanag 3748 (NATO-H-520)(QPL 5606-31) 80 80 NATO-H-515 OM-15 6 Mineral base NATO-O-1176 125 200 NATO-O-1176 OMD-90 7 Mineral base NATO-O-142 (MIL-PRF-7870C) 70 120 NATO-O-142 OM-12 Synthetic oilISO1817 Liquid101 NATO-O-147 (MIL-PRF-6085D)OX-14 Oils 8 DIESTER 150
46、 260 NATO-O-149 OX-38 continued EN 3909:20077 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 28/02/2008 07:44, Uncontrolled Copy, (c) BSITable1 Listof fluids(continued)Fluidsto beusedforthetestObservationsorcorresponding symbolsFluidsfamilyTestfluid NoTypeBase Alternative TesttemperatureC 2
47、CFlash-point C Ref. StandardSyntheticoil NATO-O-156 (MIL-PRF-23699F) OX-27 NATO-O-148 (MIL-PRF-7808L)OX-9Oils (continued)9 POLYOL ESTER NATO-O-160 OX-26 Isopropanol 50 12 a NATO-S-737 AL-11 or10 Solvent Ethanol NATO-S-738 11 Solvent Propanol 25% + whitespirit75 %v/v 25 NATO-S-752 (MIL-PRF-680Btype1)
48、NATO-S-753 (MIL-PRF-680Btype2) 12 Solvent Methylethyl ketone 25 4 a Cleaningfluids13 Detergent MIL-PRF-87937D 25 MIL-PRF-87937D 14 Runwayde icers50%inhibited potassiumacetate in water 25 Not applicable De-icing 15 Aircraftde icersEthylene glycol80 %+ water20%v/v AMS 1428 Mono-propylene glycol ISO110
49、75 ISO11078 25 200 Glycolbase NATO-S-742 NATO-S-745 continued EN 3909:20078 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 28/02/2008 07:44, Uncontrolled Copy, (c) BSITable1 Listof fluids(concluded)Fluidsto beusedforthetestObservationsorcorresponding symbolsFluidsfamilyTestfluid NoTypeBase Alternative TesttemperatureC 2 CFlash-point C Ref. StandardSullage 16 Cleaning fluid AMS 1476B 25 Not applicable 17 Heptafluoropropane 25
