1、BRITISH STANDARD AEROSPACE SERIES BS EN 2591-301:1996 Elements of electrical and optical connection Testmethods Part 301: Endurance at temperature The European Standard EN2591-301:1996 has the status of a British Standard ICS 49.060BSEN 2591-301:1996 This British Standard, having been prepared under
2、 the directionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comes intoeffect on 15June1996 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/6 Draft for comment 91/74942 DC ISBN 0 580 25960 9 Committees
3、 responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee ACE/6, Aerospace avionic, electrical and fibre-optic technology, upon which the following bodies were represented: British Airways British Cable Makers Confederation British Rubber Ma
4、nufacturers Association Civil Aviation Authority (Airworthiness Division) Federation of the Electronics Industry Ministry of Defence Society of British Aerospace Companies Amendments issued since publication Amd. No. Date CommentsBSEN 2591-301:1996 BSI 12-1999 i Contents Page Committees responsible
5、Inside front cover National foreword ii Foreword 2 1 Scope 3 2 Normative references 3 3 Preparation of the specimens 3 4 Method 3 List of references Inside back coverBSEN 2591-301:1996 ii BSI 12-1999 National foreword This British Standard has been prepared by Technical Committee ACE/6 and is the En
6、glish language version of EN2591-301:1996 Aerospace series Elements of electrical and optical connection Test methods Part301: Endurance at temperature, published by the European Committee for Standardization (CEN). It supersedes BSEN2591-C1:1992 which is withdrawn. BSEN2591-301:1996 was produced as
7、 a result of international discussions in which the United Kingdom took an active part. Cross-references The British Standards corresponding to the European Standards referred to in the text are identical in number and title with those given in clause2 with the exception of EN2591-409 which is in pr
8、eparation by CEN. It is envisaged that upon publication of EN2591-409 it will be implemented as a British Standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a B
9、ritish 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, an inside back cover and a back cover. This standard has been updated (see copyright date) and may
10、 have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2591-301 February 1996 ICS 49.060 Supersedes EN 2591-C1:1992 Descriptors: Aerospace industry, aircraft equipment, elements of electrical and
11、 optical connection, test English version Aerospace series Elements of electrical and opticalconnection Test methods Part 301: Endurance at temperature Srie arospatiale Organes de connexion lectrique et optique Mthodes dessais Partie 301: Endurance en temprature Luft- und Raumfahrt Elektrische und o
12、ptische Verbindungselemente Prfverfahren Teil 301: Temperaturbestndigkeit This European Standard was approved by CEN on1992-10-19. 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 stand
13、ard without any alteration. Up-to-date lists and bibliographical 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 la
14、nguage 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 versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Irela
15、nd, Italy, Luxembourg, Netherlands, Norway, 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 1996 Copyright reserved to CEN member
16、s Ref. No. EN 2591-301:1996 EEN 2591-301:1996 BSI 12-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). The alphanumerical designation of the Parts of EN2591 has been abandoned for a numerical designation in line with the Internal
17、 Regulations of CEN/CENELEC. This European Standard is the integral reproduction of the European Standard EN2591-C1 after application of this decision, without any other modification than the change in numbering. This European Standard shall be given the status of a national standard, either by publ
18、ication of an identical text or by endorsement, at the latest by August1996, and conflicting national standards shall be withdrawn at the latest by August1996. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement th
19、is European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EN 2591-301:1996 BSI 12-1999 3 1 Scope This standard specifies the methods to assess the endurance at t
20、emperature of an element of connection. It shall be used together with EN2591. 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 and the publications
21、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. EN 2591, Aerospace s
22、eries 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 2591-202, Aerospace series Elements of electrical and optical connection Test methods Part 202: Contact
23、resistance at rated current. EN 2591-204, Aerospace series Elements of electrical and optical connection Test methods Part 204: Discontinuity of contacts in the microsecond range. EN 2591-205, Aerospace series Elements of electrical and optical connection Test methods Part 205: Housing (shell) elect
24、rical continuity. EN 2591-206, Aerospace series Elements of electrical and optical connection Test methods Part 206: Measurement of insulation resistance. EN 2591-409, Aerospace series Elements of electrical and optical connection Test methods Part 409: Contact retention in insert 1) . 3 Preparation
25、 of the specimens 3.1 They shall be wired and mated, the contacts shall be connected in series. The cross-section and the type of wires interconnecting the contacts shall be chosen in relation to the anticipated test current and temperature. The length of the wire between two contacts shall be250mm
26、to300mm. The length of the supply lead shall be determined in relation to the test fixture. The specimen shall be fitted with temperature pick-ups. 3.2 Unless indicated in the technical specification or EN2591, the following details shall be specified: cross-section and type of the cable; fitting an
27、d sensitivity of the temperature pick-ups; maximum operating temperature; duration of the test; methods and requirements for the intermediate and final measurements; method A or B For method B specify if the test under load is applicable. 4 Method 4.1 Procedure Method A: with flow of current; Method
28、 B: without flow of current The pick-ups used shall not affect the heating of the specimens nor lead to errors of measurement. The specimens shall be placed horizontally in a chamber, the temperature of which is maintained: for method A: at (70 5)% of the maximum operating temperature specified; for
29、 method B: at 3K of the maximum operating temperature specified. 4.1.1 Method A The current shall be applied to the specimen and increased until the maximum operating temperature specified is approached. There shall be no further increase in current until thermal stability is attained. During these
30、adjustments the maximum operating temperature or the current specified shall in no case be exceeded. If the temperature rise due to the current flowing through the specimen does not cause it to reach its maximum operating temperature, the chamber temperature shall be increased until the maximum oper
31、ating temperature of the specimen is reached. In any case, the current shall be maintained throughout the test. Should the maximum operating temperature of the specimen be exceeded by5% under normal test conditions, the test shall be stopped and the specimen rejected. 4.1.2 Method B The test shall b
32、e carried out, without flowing of current, at the maximum operating temperature and for the period specified. 1) Published as AECMA Prestandard at the date of publication of the present standardEN 2591-301:1996 4 BSI 12-1999 If required, a male contact and the corresponding female contact are crimpe
33、d onto a copper-plated steel wire. Before starting the test, the position of these contacts in the connector is measured under a load of9N. The connectors are then mated and a tensile load equal to half of that specified for test EN2591-409 is applied to the male and the female contact, through whic
34、h a current of100mA passes during the whole test. One contact of each size shall be tested on various connectors. 4.2 Measurements during the test If required, the insulation resistance at elevated temperature shall be measured in accordance with test EN2591-206. For the contacts under load in metho
35、d B, the measurement of contact discontinuities shall be carried out in accordance with test EN2591-204. 4.3 Recovery The period of recovery is one hour, unless otherwise stated. 4.4 Final measurements (if applicable) The specimens shall be submitted to the tests in the following order: EN 2591-202
36、Contact resistance at rated current; EN 2591-205 Housing (shell) electrical continuity, if applicable; EN 2591-206 Measurement of insulation resistance; EN 2591-409 Contact retention in insert; EN 2591-101 Visual examination. For the contacts under load in method B, the position of the contacts shal
37、l be checked after the test.BSEN 2591-301:1996 BSI 12-1999 List of references See national foreword.BS EN 2591-301:1996 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on
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