1、BRITISH STANDARD AEROSPACE SERIES BS EN 2591-302: 1998 Elements of electrical and optical connection Test methods Part 302: Climatic sequence The European Standard EN 2591-302:1997 has the status of a British Standard ICS 40.060BSEN2591-302:1998 This British Standard, having been prepared under the
2、directionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comes intoeffect on 15 January 1998 BSI 04-1999 ISBN 0 580 29486 2 National foreword This British Standard is the English language version of EN2591-302:1997. The UK participation in its preparation
3、was entrusted 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
4、 interpretation, or proposals for change, and keep the UKinterests 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 Attention is draw
5、n to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards C
6、atalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for the
7、ir 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 front cover, pages i and ii, theEN title page, pages 2 to 5 and a back cover. This standard has been updated (see co
8、pyright 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 CommentsBSEN2591-302:1998 BSI 04-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 2591-302
9、 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2591-302 October 1997 ICS 49.060 Descriptors: Aircraft industry, aircraft equipment, connecting equipment, test English version Aerospace series Elements of electrical and optical connection Test methods Part 302: Climatic sequence Srie
10、arospatiale Organes de connexion lectrique et optique Mthodes dessais Partie 302: Squence climatique Luft- und Raumfahrt Elektrische und optische Verbindungselemente Prfverfahren Teil 302: Klimafolge This European Standard was approved by CEN on 22 June 1997. CEN members are bound to comply with the
11、 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 bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or
12、 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 CEN member into its own language and notified to the Central Secretariat has the same status as the official versi
13、ons. CEN members are the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europe
14、n de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2591-302:1997 EEN2591-302:1997 BSI 04-1999 2 Foreword This European Sta
15、ndard 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 Standard has received the approval of the National Associations and the Official Services of the member countries of AE
16、CMA, 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 April 1998, and conflicting national standards shall be withdrawn at the latest by April 1998. According to t
17、he CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, S
18、weden, Switzerland and the United Kingdom. Contents Page Foreword 2 1 Scope 3 2 References 3 3 Preparation of specimens 3 4 Method 3 Figure 1 Test cycle 5EN2591-302:1997 BSI 04-1999 3 1 Scope This standard specifies a (climatic sequence) method of assessing the ability of elements of connection to f
19、unction in a specified environment. It shall be used together with EN2591. 2 References This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed her
20、eafter. 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. For undated references the latest edition of the publication referred to applies. EN 2591, Aerospace series Elements
21、 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 2591-201, Aerospace series Elements of electrical and optical connection Test methods Part 201: Contact resistance Low
22、 level. EN 2591-202, Aerospace series Elements of electrical and optical connection Test methods Part 202: Contact resistance at rated current. EN 2591-206, Aerospace series Elements of electrical and optical connection Test methods Part 206: Measurement of insulation resistance. EN 2591-207, Aerosp
23、ace series Elements of electrical and optical connection Test methods Part 207: Voltage proof test. EN 2591-309, Aerospace series Elements of electrical and optical connection Test methods Part 309: Dry heat 1) . EN 2591-310, Aerospace series Elements of electrical and optical connection Test method
24、s Part 310: Cold 1) . EN 2591-311, Aerospace series Elements of electrical and optical connection Test methods Part 311: Low air pressure 1) . EN 2591-321, Aerospace series Elements of electrical and optical connection Test methods Part 321: Damp heat, cyclic test 1) . EN 2591-408, Aerospace series
25、Elements of electrical and optical connection Test methods Part 408: Mating and unmating forces 1) . 3 Preparation of specimens 3.1 The specimens shall be prepared according to the technical specification. 3.2 Unless specified in the technical specification, the following details shall be stated: nu
26、mber of mating and unmating operations prior to testing (if applicable); specimens mated or unmated and fitted with a protective cover (if applicable); mounting method, type of cable and definition of specimen wiring; type of preconditioning; initial measurements (if applicable); minimum value of th
27、e insulation resistance at high temperature (if applicable); applicable low air pressure value and test voltage value; applicable contact resistance test; final measurements and requirements (if applicable). 4 Method 4.1 Preconditioning Preconditioning shall be as specified. 4.2 Initial measurements
28、 (if applicable) They shall be carried out as specified. 4.3 Procedure The test shall be carried out in the following sequence (see Figure 1). 4.3.1 Dry heat In accordance with EN2591-309 The specimens shall be exposed to the specified temperature ( 1 ) for 16h. 4.3.1.1 Intermediate measurement and
29、requirement Within the last hour of exposure (see Figure 1) the insulation resistance (EN2591-206) shall be measured; it shall not be less than the specified value. 4.3.1.2 Recovery The specimens shall be allowed to recover to initial conditions. 4.3.2 Low air pressure In accordance with EN2591-311
30、for 30min, unless otherwise specified 1) Published as AECMA Prestandard at the date of publication of this standardEN2591-302:1997 4 BSI 04-1999 4.3.3 Damp heat, cyclic test The specimens shall be tested to EN2591-321 for one cycle immediately followed by the cold test without prior recovery. 4.3.4
31、Cold In accordance with EN 2591-310 The specimens shall be exposed to the specified temperature ( 2 ) for 24h. 4.3.4.1 Intermediate measurement and requirement The specimens shall then be visually inspected (EN2591-101). They shall show no sign of deterioration which might adversely affect performan
32、ce. 4.3.4.2 Recovery The specimens shall be allowed to recover to initial conditions. 4.3.5 Low air pressure In accordance with EN2591-311 for 30min, unless otherwise specified 4.3.6 Damp heat, cyclic test The specimens shall be tested to EN2591-321 for one cycle. 4.3.7 Recovery The specimens shall
33、be allowed to recover to initial conditions. 4.4 Final measurements and requirements (ifapplicable) The specimens shall be subjected to the following test sequence: EN 2591-206; EN 2591-207; EN 2591-201 or EN 2591-202; EN 2591-408; EN 2591-101. The first two tests shall be carried out immediately af
34、ter the final recovery period. The specimens shall not be unmated prior to the contact resistance tests (if applicable).EN 2591-302:1997 BSI 04-1999 5 NOTERecovery and transition times between two tests are not indicated. Figure 1 Test cycleBS EN 2591-302: 1998 BSI 389 Chiswick High Road London W4 4
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