1、BRITISH STANDARD AEROSPACE SERIES BS EN 2665-003:1999 Circuit breakers, three-pole, temperature compensated, rated currents20A to50A Part003: Metric thread terminals Product standard The European Standard EN2665-003:1999 has the status of a BritishStandard ICS49.060BSEN2665-003:1999 This BritishStan
2、dard, having been prepared under the directionof the Engineering SectorCommittee, was publishedunder the authorityofthe Standards Committee and comesinto effect on 15August1999 BSI03-2000 ISBN 0 580 32852 X National foreword This BritishStandard is the English language version of EN2665-003:1999. To
3、gether with the other parts of BS EN2665 and BS EN3774, in all its parts, it supersedes BS G179-2:1966 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic, electrical and fibre optic technology, to Subcommittee ACE/6/5, Aerospace
4、Protection of electrical systems, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developm
5、ents and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The BritishStandards which implement international or European publications referred to in this document may be found in the BSI Standards Catalo
6、gue 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 their co
7、rrect 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, pagesi andii, theEN title page, pages2 to6 and a back cover. This standard has been updated (see copyright d
8、ate) 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 CommentsBSEN2665-003:1999 BSI 03-2000 i Contents Page National foreword Inside front cover Foreword 2 Text of EN2665-003 3ii blank
9、EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN2665-003 June1999 ICS49.060 English version Aerospace series Circuit breakers, three-pole, temperature compensated, rated currents20A to50A Part003: Metric thread terminals Product standard Srie arospatiale Disjoncteurs tripolaires compenss en temp
10、rature, intensits nominales20A 50A Partie003: Bornes filetage mtrique Norme de produit Luft- und Raumfahrt Schutzschalter, dreipolig, temperaturkompensiert, Nennstrme von20A bis50A Teil003: Metrisches Klemmengewinde Produktnorm This European Standard was approved by CEN on4September1998. CEN members
11、 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 obtained on application
12、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 Secretariat has the same
13、 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 UnitedKingdom. CEN European Committee for
14、Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN2665-3:1999EEN2665-003:1999 BSI 03-2000 2 Fo
15、reword 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 the Official Services of th
16、e 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 December1999, and conflicting national standards shall be withdrawn at the latest by
17、December1999. 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, Luxembourg, Netherlands
18、, Norway, Portugal, Spain, Sweden, Switzerland and the UnitedKingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Required characteristics 3 4.1 Short-circuit performance 3 4.2 Dimensions, mounting, electrical connections 4 4.3 Fasteners 5 4.4 Mass 5 5 Designation 6
19、 6 Marking 6 Figure 1 Circuit breaker 4 Figure 2 Panel cut-out (panel thickness1,5to3) 4 Figure 3 Electrical connection 4 Figure 4 Screw 5 Figure 5 Washer 5 Figure 6 Attachment nut 5 Figure 7 Lock washer 5 Table 1 6EN2665-003:1999 BSI 03-2000 3 1 Scope This standard specifies the required characteri
20、stics for three-pole, temperature compensated circuit breakers, rated currents from20A to50A, metric thread terminals, for use in aircraft electrical systems, at temperatures between55 C and90 C and at a maximum altitude of Z=15000m. It shall be used together with EN2665-001. These circuit breakers
21、are intended for use in aircraft with electrical supplies in accordance with EN2282. 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 publica
22、tions 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. ISO965-2, ISO
23、general purpose metric screw threads Tolerances Part2: Limits of sizes for general purpose bolt and nut threads Medium quality. ISO1190-1, Copper and copper alloys Code of designation Part1: Designation of materials. ISO7045, Cross-recessed pan head screws Product grade A. EN2282, Aerospace series C
24、haracteristics of aircraft electrical supplies. EN2350, Aerospace series Circuit breakers Technical specification. EN2665-001, Aerospace series Circuit breakers, three-pole, temperature compensated, rated currents20A to50A Part001: Technical specification. 3 Definitions For the purposes of this stan
25、dard, the definitions given in EN2350 apply. 4 Required characteristics 4.1 Short-circuit performance Test current:1500A prospective,0,8k cos: 1 Number of CO/OCO tests:1CO+2OCOEN2665-003:1999 4 BSI 03-2000 4.2 Dimensions, mounting, electrical connections SeeFigure 1, Figure 2 and Figure 3. Dimension
26、s and tolerances are in millimetres. Figure 1 Circuit breaker Figure 2 Panel cut-out (panel thickness1,5to3) Figure 3 Electrical connectionEN2665-003:1999 BSI 03-2000 5 4.3 Fasteners Dimensions and tolerances are in millimetres. 4.3.1 For electrical connections SeeFigure 4 and Figure 5. 4.3.2 For mo
27、unting SeeFigure 6 and Figure 7. 4.4 Mass Maximum mass:175g (provisioning code D) Screw: ISO7045M4 64,8Z Material: steel Protection: zinc plated, passivated, bright Two wave corrugated washer Material: CuBe1,9 to ISO1190-1 Hardness:350HV to410HV Figure 4 Screw Figure 5 Washer Thread to ISO965-2 Mate
28、rial: aluminium alloy2017 a Protection: black sulphur anodized M12DIC lock washer (internal serrated teeth) Material: steel Hardness:400HV to480HV Protection: black zinc dichromate a Designation of “ALUMINUM ASSOCIATION” Figure 6 Attachment nut Figure 7 Lock washerEN2665-003:1999 6 BSI 03-2000 5 Des
29、ignation EXAMPLE: NOTEIf necessary, the code I9005 shall be placed between the description block and the identity block. Table 1 6 Marking SeeEN2350. The provisioning code shall not be marked on the product. Code Fasteners for terminals Fasteners for mounting None Fitted Supplied separately None Fit
30、ted Supplied separately A X X B X X C X X D X X E X X blankBS EN 2665-003:1999 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 standards in Europe and at the internatio
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