1、BRITISH STANDARD AEROSPACE SERIES BS EN 2591-309:1998 Elements of electrical and optical connection Test methods Part 309: Dry heat The European Standard EN 2591-309:1997 has the status of a British Standard ICS 49.060BSEN2591-309:1998 This British Standard, having been prepared under the direction
2、of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 January 1998 BSI 04-1999 ISBN 0 580 29482 X National foreword This British Standard is the English language version of EN 2591-309:1997. The UK participation in its preparation was e
3、ntrusted 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 inte
4、rpretation, 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 committee can be obtained on request to its secretary. Cross-references Attention is drawn to th
5、e 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 international or European publications referred to in this document may be found in the
6、 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 not purport to include all the necessary provisions of a contract. Users of British Standards are res
7、ponsible 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 and 3 and a back cover. This standard has bee
8、n 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 CommentsBSEN2591-309:1998 BSI04-1999 i Contents Page National foreword Inside front cover Foreword 2 Tex
9、t of EN 2591-309 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN2591-309 October1997 ICS49.060 Descriptors: Aircraft industry, aircraft equipment, connecting equipment, test English version Aerospace series Elements of electrical and optical connection Test methods Part 309: Dry heat S
10、rie arospatiale Organes de connexion lectrique et optique Mthodes dessais Partie 309: Chaleur sche Luft- und Raumfahrt Elektrische und optische Verbindungselemente Prfverfahren Teil 309: Trockene Wrme This European Standard was approved by CEN on 22 June 1997. CEN members are bound to comply with th
11、e 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europ
14、en 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 2591-309:1997 EEN2591-309:1997 2 BSI04-1999 Foreword This European Sta
15、ndard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out inaccordance 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 AEC
16、MA, 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 April1998, and conflicting national standards shall be withdrawn at the latest by April1998. According to the
17、CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Swe
18、den, 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 3EN2591-309:1997 BSI04-1999 3 1 Scope This standard specifies a method of assessing the ability of elements of connection to function in dry heat c
19、onditions. It shall be used together with EN 2591. This method forms part of the test EN 2591-302. 2 Normative 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 a
20、nd 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 publication referred to applies.
21、EN 2591, Aerospace series Elements of electrical and optical connection Test methods General. EN 2591-206, Aerospace series Elements of electrical and optical connection Test methods Part 206: Measurement of insulation resistance. EN 2591-302, Aerospace series Elements of electrical and optical conn
22、ection Test methods Part 302: Climatic sequence 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: specimens mated or unmated and fitted with protective
23、covers (if applicable); mounting method, type of cable and definition of wiring of specimen; type of preconditioning (if applicable); initial measurements (if applicable); severity (see5.3); final measurements and requirements; measurement method according to EN2591-206 and insulation resistance val
24、ue. 4 Apparatus The test chamber shall be designed so that the temperature is controlled by sensing devices located at those locations where the specimens are installed. The absolute humidity shall not exceed20g of water vapour per cubic metre of air (i.e.approximately50% relative humidity at35C). W
25、hen the test is carried out at a temperature lower than35C, the relative humidity shall not exceed50%. 5 Method 5.1 Preconditioning Preconditioning shall take at least1h unless otherwise specified. If required, the specimens shall be mated and unmated the specified number of times before testing. 5.
26、2 Initial measurements (if applicable) They shall be carried out as specified. 5.3 Severity The severity, defined by the temperature and exposure time, shall be selected from those listed below. 5.3.1 Temperature (350 5) C (260 5) C (200 2) C (175 2) C (155 2) C (125 2) C (85 2) C 5.3.2 Exposure tim
27、e 16 h 5.4 Procedure When the test chamber is at the temperature corresponding to the specified severity, the specimens shall be introduced and connected to the measuring instruments. Exposure time shall be calculated from the moment the chamber has reached thermal stability. 5.5 Final measurements
28、and requirements On completion of exposure time, while the specimens are still at the high temperature and within1h, the insulation resistance shall be measured (EN2591-206). Its value shall not be less than that specified. 1) Published as AECMA Prestandard at the date of publication of this standar
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