1、BRITISH STANDARD AEROSPACE SERIES BS EN 2591-323:1998 Elements of electrical and optical connection Test methods Part 323: Thermal shock The European Standard EN2591-323:1998 has the status of a British Standard ICS 49.060BSEN2591-323:1998 This British Standard, having been prepared under the direct
2、ionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comes intoeffect on 15August1998 BSI 05-1999 ISBN 0 580 30308 X National foreword This British Standard is the English language version of EN2591-323:1998. The UK participation in its preparation was entru
3、sted by Technical Committee ACE/6, Aerospace avionic, electrical and fibre optic technology, to Subcommittee ACE/6/3, Aerospace Connectors, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpre
4、tation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards whi
5、ch implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does n
6、ot purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside
7、front cover, pages i and ii, the EN title page, pages2 to4 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date Commen
8、tsBSEN2591-323:1998 BSI 05-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 2591-323 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2591-323 June 1998 ICS 49.060 Descriptors: Aircraft industry, aircraft equipment, connecting equipment, test English versi
9、on Aerospace series Elements of electrical and optical connection Test methods Part 323: Thermal shock Srie arospatiale Organes de connexion lectrique et optique Mthodes dessais Partie 323: Chocs thermiques Luft- und Raumfahrt Elektrische und optische Verbindungselemente Prfverfahren Teil 323: Therm
10、ischer Schock This European Standard was approved by CEN on 22 June 1997. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliogr
11、aphical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a
12、CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway
13、, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved world
14、wide for CEN national Members. Ref. No. EN 2591-323:1998 EEN2591-323:1998 BSI 05-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this Stand
15、ard has received the approval of the National Associations and the Official 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 lates
16、t by December1998, and conflicting national standards shall be withdrawn at the latest by December1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, D
17、enmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Preparation of specimens 3 4 Apparatus 3 5 Method 3 Figure 1 4EN2591-323:1998
18、 BSI 05-1999 3 1 Scope This standard specifies a method of verifying the ability of hermetic elements of connection to sustain thermal shock. It shall be used together with EN2591. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publicat
19、ions. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision.
20、For undated references the latest edition of the publication referred to applies. EN 2591, Aerospace series Elements of electrical and optical connection Test methods General. EN 2591-101, Aerospace series Elements of electrical and optical connection Test methods Part 101: Visual examination. EN 25
21、91-206, Aerospace series Elements of electrical and optical connection Test methods Part 206: Measurement of insulation resistance. EN 2591-322, Aerospace series Elements of electrical and optical connection Test methods Part 322: Hermeticity 1) . 3 Preparation of specimens 3.1 Specimens shall be pr
22、epared according to the technical specification. 3.2 Unless specified in the technical specification, the following details shall be stated: specimens wired or unwired; type of cable and definition of specimen wiring (if applicable); initial measurements (if applicable); final measurements (if appli
23、cable); method according to EN2591-206 and insulation resistance value. 4 Apparatus Two containers, one with cold water, the other with hot water, are necessary for this test. The location of these two containers shall be such that the transfer of specimens from one to the other can be carried out i
24、n a time less than5 s (t 2 ). The cold water container shall be capable of maintaining the water temperature between1C and4C. The hot water container shall be capable of maintaining the water temperature between90C and100C. The volume of the water shall be approximately0,04m 3 . No dimension of the
25、containers shall be less than250mm. 5 Method 5.1 Initial measurements (if applicable) They shall be carried out as specified. 5.2 Procedure The specimens, at ambient temperature, shall be immersed in the centre of the containers in accordance with the cycle defined inFigure 1. The immersion time (t
26、1 ) at each temperature shall be (10 1)min. The number of cycles shall be10. 5.3 Recovery At the end of the last cycle, the specimens shall be drained and then dried at a temperature of(70 5)C for15min. 5.4 Final measurements (if applicable) The specimens shall be subjected to the following test seq
27、uence: EN 2591-322; EN 2591-206; EN 2591-101. 1) Published as AECMA Prestandard at the date of publication of this standardEN2591-323:1998 4 BSI 05-1999 Figure 1 blankBS EN 2591-323:1998 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body resp
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