BS EN 2591-319-1998 Elements of electrical and optical connection - Test methods - Gastightness of solderless wrapped connections《光电连接元件 试验方法 无焊绕接的气密性》.pdf

1、BRITISH STANDARD AEROSPACE SERIES BS EN 2591-319:1998 Elements of electrical and optical connection Test methods Part 319: Gastightness of solderless wrapped connections The European Standard EN 2591-319:1997 has the status of a British Standard ICS 49.060BSEN 2591-319:1998 This British Standard, ha

2、ving been prepared under the 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 29477 3 National foreword This British Standard is the English language version of EN2591-319:1997. The UK part

3、icipation in its preparation 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 c

4、ommittee any enquiries 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. Cros

5、s-references Attention 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 BritishStandards which implement international or European publications referred to

6、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 not purport to include all the necessary provisions of a contract

7、. 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 front cover, pages i and ii, theEN title page, pages 2 to 4 and

8、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 CommentsBSEN 2591-319:1998 BSI 04-1999 i Contents Page National forew

9、ord Inside front cover Foreword 2 Text of EN 2591-319 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2591-319 October 1997 ICS 49.060 Descriptors: Aircraft industry, aircraft equipment, connecting equipment, test English version Aerospace series Elements of electrical and optical conn

10、ection Test methods Part 319: Gastightness of solderless wrapped connections Srie arospatiale Organes de connexion lectrique et optique Mthodes dessais Partie 319: Etanchit aux gaz des connexions enroules sans brasure Luft- und Raumfahrt Elektrische und optische Verbindungselemente Prfverfahren Teil

11、319: Gasdichtheit von ltfreien Wickelverbindungen 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 alter

12、ation. 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 language made by transl

13、ation 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, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, It

14、aly, 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 1997 CEN All rights of exploitation in any

15、form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2591-319:1997 EEN 2591-319:1997 BSI 04-1999 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

16、rules of this Association, this Standard 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

17、 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 the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: A

18、ustria, Belgium, CzechRepublic, Denmark, 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 M

19、ethod 3 Figure 1 4EN 2591-319:1997 BSI 04-1999 3 1 Scope This standard specifies a method of verifying the gastightness of solderless wrapped connections. It shall be used together with EN2591. 2 Normative references This European Standard incorporates by dated or undated reference provisions from o

20、ther publications. 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

21、or revision. 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 exami

22、nation. EN 2591-102, Aerospace series Elements of electrical and optical connection Test methods Part 102: Examination of dimensions and mass. 3 Preparation of specimens 3.1 Specimens previously tested to EN2591-101 and EN2591-102 shall be prepared according to the technical specification. 3.2 Unles

23、s specified in the technical specification, the following details shall be stated: type of conductor; contact-conductor combinations; type of wrapping tool; requirement. 4 Apparatus a) A sealed tube with a diameter of16mm and a length of150mm containing 1 cm 3to 2 cm 3of aqua regia (50% nitric acid,

24、 50% hydrochloric acid). b) A sealed tube with a diameter of16mm and a length of150mm containing approximately 1 cm 3of a concentrated ammonium sulphide solution. 5 Method 5.1 The specimens shall be subjected to an atmosphere which changes the colour of the area of contacts not covered by the conduc

25、tor. The change in colour shall be sufficient to give a sharp contrast between these areas and the rest of the contact. 5.2 Number of contacts to be tested For each contact and conductor combination, 30 specimens shall be tested. 5.3 Procedure The specimens shall be: exposed to aqua regia vapour in

26、the sealed tube for10min without contact with the solution; then transferred to the second sealed tube where they shall be exposed to the ammonium sulphide vapour without contact with the solution until their visible area blackens; dried and the conductor carefully unwrapped. 5.4 Requirement The are

27、as shown in Figure 1, detail X, shall be visually examined (EN2591-101) with a magnification of 5 to 20. They shall be bright over at least75% of corners contacting the conductor, excluding those associated with the first and last turns.EN 2591-319:1997 4 BSI 04-1999 Figure 1 5 blankBS EN 2591-319:1

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