1、BRITISH STANDARD AEROSPACE SERIES BS EN 3841-407:2004 Circuit breakers Test methods Part 407: Temperature variation The European Standard EN 3841-407:2004 has the status of a British Standard ICS 49.060 BS EN 3841-407:2004 This British Standard was published under the authority of the Standards Poli
2、cy and Strategy Committee on 21 February 2005 BSI 21 February 2005 ISBN 0 580 45537 8 National foreword This British Standard is the official English language version of EN 3841-407:2004. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical
3、 and fibre optic technology, to Subcommittee ACE/6/5, Circuit breakers, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications
4、 referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary
5、provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpreta
6、tion, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 4, an inside back cover and a back co
7、ver. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN3841407 December2004 ICS49.060 Englishversion AerospaceseriesCircuitbreakersTestmethodsPart
8、407: Temperaturevariation SriearospatialeDisjoncteursMthodesdessais Partie407:Diffrencedetemprature LuftundRaumfahrtSchutzschalterPrfverfahrenTeil 407:Temperaturwechsel ThisEuropeanStandardwasapprovedbyCENon10September2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulat
9、etheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,
10、German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Gr
11、eece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brus
12、sels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN3841407:2004:E EN 3841-407:2004 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Method 4 3.1 Mounting.4 3.2 Procedure .4 4 Requirement.4 EN 3841-407:2004 (E) 3 Foreword This
13、 document (EN 3841-407:2004) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-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 O
14、fficial Services of the member countries of AECMA, 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 2005, and conflicting national standards shall be withdraw
15、n at the latest by June 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Icela
16、nd, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 3841-407:2004 (E) 4 1 Scope This standard specifies a method of verifying the ability of circuit breakers to withstand a temperature
17、variation. It shall be used together with EN 3841-100. 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 (includ
18、ing any amendments) applies. ISO 7137, Aircraft Environmental conditions and test procedures for airborne equipment EN 3841-100, Aerospace series Circuit breakers Test methods Part 100: General 3 Method 3.1 Mounting The circuit breakers shall be mounted on a support placed in the chamber and connect
19、ed to an outside power supply. 3.2 Procedure The circuit breakers shall be tested in the ON position. The temperature variation test shall be carried out according to test procedure 1.2 (without altitude) of ISO 7137. The technical specification shall specify the category, the high and low operating
20、 temperature extremes, the number of cycles load and the applicable performance tests. 4 Requirement Requirements in accordance with technical specification and product standard. blankBS EN 3841-407:2004 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independen
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