BS EN 2591-305-1998 Elements of electrical and optical connection - Test methods - Rapid change of temperature《光电连接元件 试验方法 温度快速变化》.pdf

1、BRITISH STANDARD AEROSPACE SERIES BS EN 2591-305:1998 Elements of electrical and optical connection Testmethods Part 305: Rapid change of temperature The European Standard EN 2591-305:1997 has the status of a British Standard ICS 49.060BSEN2591-305:1998 This British Standard, having been prepared un

2、der the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15January1998 BSI 04-1999 ISBN 0 580 29483 8 National foreword This British Standard is the English language version of EN2591-305:1997. The UK participation in its pr

3、eparation 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 enquir

4、ies on the interpretation, 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 Attent

5、ion is drawn 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

6、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 not purport to include all the necessary provisions of a contract. Users of British Standards are responsi

7、ble 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 front cover, pages i and ii, theEN title page, pages 2 to 4 and a back cover. This standard has been upda

8、ted (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 CommentsBSEN2591-305:1998 BSI04-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of E

9、N 2591-305 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2591-305 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 305: Rapid change

10、of temperature Srie arospatiale Organes de connexion lectrique et optique Mthodes dessais Partie 305: Variations rapides de temprature Luft- und Raumfahrt Elektrische und optische Verbindungselemente Prfverfahren Teil 305: Schnelle Temperaturwechsel This European Standard was approved by CEN on 22 J

11、une 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 bibliographical references concerning such national standards may be obt

12、ained 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 CEN member into its own language and notified to the Central Sec

13、retariat 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, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN E

14、uropean Committee for Standardization Comit Europen 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 2591-305:1997 EEN 259

15、1-305:1997 2 BSI04-1999 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 Standard has received the approval of the National Associations and t

16、he 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 latest by April 1998, and conflicting national standards shall be wit

17、hdrawn at the latest by April 1998. 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, L

18、uxembourg, 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 Test cycle 4EN2591-305:1997 BSI04-1999 3 1 Scope This standard specifies a method of

19、 assessing the ability of elements of connection to withstand rapid changes of temperature. It shall be used together with EN 2591. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the

20、 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. For undated references the latest edition of the

21、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 2591-206, Aerospace series Elements of electrical a

22、nd optical connection Test methods Part 206: Measurement of insulation resistance. EN 2591-207, Aerospace series Elements of electrical and optical connection Test methods Part 207: Voltage proof test. EN 2591-408, Aerospace series Elements of electrical and optical connection Test methods Part 408:

23、 Mating and unmating forces 1) . 3 Preparation of specimens 3.1 Specimens shall be prepared according to the technical specification. 3.2 Unless specified in the technical specification, the following details shall be stated: number of mating and unmating operations prior to testing (if applicable);

24、 specimens mated or unmated (if applicable); mounting method and definition of specimen wiring; type of cable (if applicable); initial measurements (if applicable); severity (see5.2.4); final measurements and requirements (ifapplicable). 4 Apparatus Two chambers, one for low temperature and one for

25、high temperature shall be provided. The location of the chambers shall be such that the time of transfer (t 2 ) of specimens from one chamber to the other is less than1min. The chambers shall be capable of maintaining the specified temperatures to 3% at those locations where the specimens are instal

26、led. The volume of chambers shall be such that, after insertion of the specimens, the temperature shall be within the specified tolerances after a time of not more than5min or10% of the exposure time, whichever is the smaller. Unless otherwise specified, the thermal conduction of the mounting shall

27、be sufficiently low, so that the specimens may be considered thermally isolated. 5 Method 5.1 Initial measurements (if applicable) They shall be carried out as specified. 5.2 Procedure 5.2.1 The severity of the test (high temperature T A , low temperature T B , duration t 1 ) and the number of cycle

28、s shall be as specified. 5.2.2 The number of cycles shall be10, with a possible interruption (not exceeding24 h) after the fifth cycle, unless otherwise specified. 5.2.3 Exposure to each of the two temperatures shall be30min, unless otherwise specified. 5.2.4 The specimens at ambient temperature sha

29、ll be subjected to the test cycle as defined in Figure 1. 5.3 Recovery The specimens shall be allowed to recover to initial conditions. 5.4 Final measurements and requirements (ifapplicable) The specimens shall be subjected to the following test sequence: EN 2591-207; EN 2591-206; EN 2591-101; EN 25

30、91-408. 1) Published as AECMA Prestandard at the date of publication of this standardEN 2591-305:1997 4 BSI04-1999 Figure 1 Test cycle5 blankBS EN 2591-305:1998 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing Brit

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