1、BRITISH STANDARD AEROSPACE SERIES BS EN 3841-406:2004 Circuit breakers Test methods Part 406: Flammability The European Standard EN 3841-406:2004 has the status of a British Standard ICS 49.060 BS EN 3841-406:2004 This British Standard was published under the authority of the Standards Policy and St
2、rategy Committee on 21 February 2005 BSI 21 February 2005 ISBN 0 580 45536 X National foreword This British Standard is the official English language version of EN 3841-406:2004. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibr
3、e 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 referred
4、 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 provision
5、s 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 interpretation, or
6、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 cover. The
7、BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN3841406 December2004 ICS49.060 Englishversion AerospaceseriesCircuitbreakersTestmethodsPart406: Flam
8、mability SriearospatialeDisjoncteursMthodesdessais Partie406:Ininflammabilit LuftundRaumfahrtSchutzschalterPrfverfahrenTeil 406:Nichtentflammbarkeit ThisEuropeanStandardwasapprovedbyCENon10September2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgiv
9、ingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninan
10、yotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland
11、,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrigh
12、tsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN3841406:2004:E EN 3841-406:2004 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Method 4 4 Requirement.4 EN 3841-406:2004 (E) 3 Foreword This document (EN 3841-406:2004) has been prepared by th
13、e 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 Official Services of the member countries of AECMA, p
14、rior 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 withdrawn at the latest by June 2005. According to the CEN/C
15、ENELEC 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, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, M
16、alta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 3841-406:2004 (E) 4 1 Scope This standard specifies a method of verifying the flammability of plastic (synthetic) materials used in the housing, insulator base and any parts exposed to
17、arcs or glowing elements of circuit breakers. 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 a
18、mendments) applies. IEC 60695-2-10, Fire Hazard Testing Part 2-10: Glowing/Hot-Wire Based Test Methods Glow/Wire Apparatus and Common Test Procedure 3 Method The test apparatus is described in IEC 60695-2-10, clause 4 and Figure 2. The glow-wire test shall be carried out in accordance with IEC 60695
19、-2-10 and the following requirements: the tested parts shall be fitted with the tip of the glow-wire positioned at a distance of (200 5) mm above the white board (approximately 10 mm thick and covered with a single layer of tissue paper); the test shall be carried out on part supporting current carr
20、ying parts (main and signal) and parts of the housing in contact with electric arcs; temperature of the tip of the glow-wire: (960 15) C; duration of application: (30 1) s. 4 Requirement The test shall be considered to be satisfactory if a flame or glowing of the tested part is extinguished within 3
21、0 s of removing the glow-wire and if there is no ignition of the tissue paper. blankBS EN 3841-406:2004 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in
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