1、BRITISH STANDARDBS EN 2349-412:2007Aerospace series Requirements and test procedures for relays and contactors Part 412: SealICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38
2、g50g51g60g53g44g42g43g55g3g47g36g58BS EN 2349-412:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 August 2008 BSI 2008ISBN 978 0 580 56757 5National forewordThis British Standard is the UK implementation of EN 2349-412:2007. The UK par
3、ticipation 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 to include all the necessary provision
4、s of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2349-412April 2007ICS 49.060English Version
5、Aerospace series - Requirements and test procedures for relaysand contactors - Part 412: SealSrie arospatiale - Exigences et mthodes dessais desrelais et contacteurs - Partie 412 : tanchitLuft- und Raumfahrt - Anforderungen und Prfverfahren frRelais und Schaltschtze - Teil 412: StirnflchendichtheitT
6、his European Standard was approved by CEN on 19 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
7、 concerning such nationalstandards 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
8、 own language and notified 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, Lithua
9、nia, Luxembourg, Malta, 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 A
10、ll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2349-412:2007: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Method 4 4 Requirements.4 BS EN 2349-412:20073 Foreword This document (EN 2349-412:2007) has been prepared by t
11、he 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 the approval of the National Associations and the Official Services of the member countries of AS
12、D, 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, and conflicting national standards shall be withdrawn at the latest by October 2007. According to
13、 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, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lith
14、uania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 2349-412:20074 1 Scope This standard specifies a method for checking the leakage rate of relays and contactors. It shall be used together with EN 234
15、9-100. 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 2349-100, Aerosp
16、ace series Requirements and test procedures for relays and contactors Part 100: General requirements 1)EN 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: Sea
17、ling 3 Method 3.1 Mounting For relays or contactors with plug-socket holders, only the switching device shall 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 volum
18、e of more than 30 cm3shall show a leakage rate, at a pressure differential of 100 kPa (1 bar), of at most 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 6
19、0068-2-17. 4.2 Liquid-tightness 10 s after immersion no visible bubbles shall escape, in accordance with 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 2349-412:2007bla
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