1、Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 12/11/2008 02:21, Uncontrolled Copy, (c) BSIg49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58a
2、nd contactors Part 412: SealICS 49.060Aerospace series Requirements and test procedures for relays BRITISH STANDARDBS EN 2349-412:2007BS EN 2349-412:2007Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 12/11/2008 02:21, Uncontrolled Copy, (c) BSIThis British Standard was published under the au
3、thority of the Standards Policy and Strategy Committee on 29 August 2008 BSI 2008ISBN 978 0 580 56757 5Amendments/corrigenda issued since publicationDate CommentsCompliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard is the UK implemen
4、tation of EN 2349-412:2007. The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport
5、to include all the necessary provisions of a contract. Users are responsible for its correct application.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2349-412April 2007ICS 49.060English VersionAerospace series - Requirements and test procedures for relaysand contactors - Part 412: SealSrie aros
6、patiale - Exigences et mthodes dessais desrelais et contacteurs - Partie 412 : tanchitLuft- und Raumfahrt - Anforderungen und Prfverfahren frRelais und Schaltschtze - Teil 412: StirnflchendichtheitThis European Standard was approved by CEN on 19 May 2006.CEN members are bound to comply with the CEN/
7、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 nationalstandards may be obtained on application to the CEN Management Centre or to a
8、ny 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 notified to the CEN Management Centre has the same status as theofficial versions.CE
9、N 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, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Swed
10、en, 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 exploitation in any form and by any means reservedworldwide for CEN national Members.Ref.
11、 No. EN 2349-412:2007: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 12/11/2008 02:21, Uncontrolled Copy, (c) BSI2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Method 4 4 Requirements.4 BS EN 2349-412:2007Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 12/11/2008 02:
12、21, Uncontrolled Copy, (c) BSI3 Foreword This document (EN 2349-412:2007) has been prepared by the AeroSpace and Defense 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 t
13、he 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 October 2007, a
14、nd conflicting national standards shall be withdrawn at the latest by October 2007. 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, Cyprus, Czech Republic, De
15、nmark, 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. BS EN 2349-412:2007Licensed Copy: Wang Bin, ISO/EXCHANGE CH
16、INA STANDARDS, 12/11/2008 02:21, Uncontrolled Copy, (c) BSI4 1 Scope This standard specifies a method for checking the leakage rate of relays and contactors. It shall be used together with EN 2349-100. 2 Normative references The following referenced documents are indispensable for the application of
17、 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 2349-100, Aerospace series Requirements and test procedures for relays and contactors Part 100: General requirements 1)EN
18、 2349-201, Aerospace series Requirements and test procedures for relays and contactors Part 201: Visual inspection IEC 60068-2-17, Basic environmental testing procedures Part 2: Tests Test Q: Sealing 3 Method 3.1 Mounting For relays or contactors with plug-socket holders, only the switching device s
19、hall be tested. 3.2 Procedure The relay or contactor shall be subjected to a seal test in accordance with IEC 60068-2-17. 4 Requirements 4.1 Gas-tightness Relays or contactors with a sealed volume of more than 30 cm3shall show a leakage rate, at a pressure differential of 100 kPa (1 bar), of at most
20、 1 106cm3/ s per 15 cm3hermetically sealed volume. Relays or contactors with a sealed volume of less than 30 cm3shall show a leakage rate of at most 1 108cm3/ s in accordance with Test Q of IEC 60068-2-17. 4.2 Liquid-tightness 10 s after immersion no visible bubbles shall escape, in accordance with
21、Test Q of IEC 60068-2-17. 4.3 Inspection Test in accordance with EN 2349-201. No signs of leakage or bubbles. 1) In preparation at the date of publication of this standard. BS EN 2349-412:2007Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 12/11/2008 02:21, Uncontrolled Copy, (c) BSIblankLice
22、nsed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 12/11/2008 02:21, Uncontrolled Copy, (c) BSIBS EN BSI Group Headquarters389 Chiswick High Road,London W4 4AL, UKLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 12/11/2008 02:21, Uncontrolled Copy, (c) BSITel +44 (0)20 8996 9001Fax +44 (0)20 8
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