1、BRITISH STANDARD AEROSPACE SERIES BS EN 3773-003:1999 Circuit breakers, single-pole, temperature compensated, rated currents1A to25A, switching capacity 65I n /1000A max. Part003: Metric thread terminals Product standard The European Standard EN3773-003:1999 has the status of a BritishStandard ICS 4
2、9.060BSEN3773-003:1999 This BritishStandard, having been prepared under the directionof the Engineering SectorCommittee, was publishedunder the authorityofthe Standards Committee and comes intoeffecton 15August1999 BSI03-2000 ISBN 0 580 32855 4 National foreword This BritishStandard is the English l
3、anguage version of EN3773-003:1999. Together with the other parts of BS EN3773 and BS EN2794, in all its parts, it supersedes BS G179-1:1962 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic, electrical and fibre optic technolog
4、y, to Subcommittee ACE/6/5, Aerospace 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 relat
5、ed 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 The BritishStandards which implement international or European publications referred to in this document ma
6、y 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. Users of British
7、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, pagesi andii, theEN title page, pages2 to7 and a back cover. This stan
8、dard 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 CommentsBSEN3773-003:1999 BSI 03-2000 i Contents Page National foreword Inside front cover F
9、oreword 2 Text of EN3773-003 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN3773-003 June1999 ICS 49.060 English version Aerospace series Circuit breakers, single-pole, temperature compensated, rated currents1A to25A, switching capacity65 I n /1000A max. Part003: Metric thread terminal
10、s Product standard Srie arospatiale Disjoncteurs unipolaires compenss en temprature, intensits nominales1A 25A, pouvoir de coupure 65 I n /1000A max. Partie003:Bornes filetage mtrique Norme de produit Luff- und Raumfahrt Schutzschalter, einpolig, temperaturkompensiert, Nennstrme von1A bis25A, Schalt
11、vermgen 65 I n /1000A max. Teil003: Metrisches Klemmengewinde Produktnorm This European Standard was approved by CEN on4September1998. 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 s
12、tandard 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 othe
13、r 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 versions. CEN members are the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Gre
14、ece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1999 CEN All rights
15、 of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN3773-3:1999 EEN3773-003:1999 BSI 03-2000 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in
16、accordance 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 AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publica
17、tion of an identical text or by endorsement, at the latest by December1999, and conflicting national standards shall be withdrawn at the latest by December1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement t
18、his European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and theUnitedKingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Requir
19、ed characteristics 3 4.1 Short-circuit performance 3 4.2 Dimensions, mounting, electrical connections 4 4.3 Fasteners 5 4.4 Mass 7 5 Designation 7 6 Marking 7 Figure 1 Circuit breaker 4 Figure 2 Panel cut-out (panel thickness1,5 to3) 4 Figure 3 Electrical connection 5 Figure 4 Screw 5 Figure 5 Washe
20、r 5 Figure 6 Attachment nut 6 Figure 7 Lock washer 6 Table 1 7EN3773-003:1999 BSI 03-2000 3 1 Scope This standard specifies the required characteristics for single-pole, temperature compensated circuit breakers, rated currents from1A to25A, switching capacity65 I n /1000A max., metric thread termina
21、ls, for use in aircraft electrical systems, at temperatures between55 C and125 C and at a maximum altitude of Z=22000m. It shall be used together with EN3773-001. These circuit breakers are intended for use in aircraft with electrical supplies in accordance with EN2282. 2 Normative references This E
22、uropean 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 are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publicatio
23、ns 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 general purpose metric screw threads Tolerances Part2: Limits of sizes for general purpose bolt and nut threads Me
24、dium quality. ISO1190-1, Copper and copper alloys Code of designation Part1: Designation of materials. ISO7045, Cross-recesses pan head screws Product grade A. EN2282, Aerospace series Characteristics of aircraft electrical supplies. EN2350, Aerospace series Circuit breakers Technical specification.
25、 EN3774-001, Aerospace series Circuit breakers, single-pole, temperature compensated, rated currents1A to25A, switching capacity65 I n /1000A max. Part001: Technical specification. 3 Definitions For the purposes of this standard the definitions given in EN2350 apply. 4 Required characteristics 4.1 S
26、hort-circuit performance Test current: 28V d.c.,65 I nprospective; 115V a.c.400Hz,65 I n /1000A max. prospective,0,8kcos: 1. Number of CO/OCO tests:1CO+2OCOEN3773-003:1999 4 BSI 03-2000 4.2 Dimensions, mounting, electrical connections SeeFigure 1, Figure 2 and Figure 3. Dimensions and tolerances are
27、 in millimetres. Figure 1 Circuit breaker Figure 2 Panel cut-out (panel thickness1,5 to3)EN3773-003:1999 BSI 03-2000 5 4.3 Fasteners Dimensions and tolerances are in millimetres. 4.3.1 For electrical connections SeeFigure 4 and Figure 5. Figure 3 Electrical connection Screw: ISO7045 M4 64,8Z Materia
28、l: steel Protection: zinc plated, passivated, bright Figure 4 Screw Two wave corrugated washer Material: CuBe1,9 to ISO1190-1 Hardness:350HV to410HV Figure 5 WasherEN3773-003:1999 6 BSI 03-2000 4.3.2 For mounting SeeFigure 6 and Figure 7. Thread to ISO965-2 Material: aluminium alloy2017 a Protection
29、: black sulphur anodized a Designation of “ALUMINIUM ASSOCIATION” Figure 6 Attachment nut M12 DIC lock washer (internal serrated teeth) Material: steel Hardness:400HV to480HV Protection: black zinc dichromate Figure 7 Lock washerEN3773-003:1999 BSI 03-2000 7 4.4 Mass Maximum mass:26g (provisioning c
30、ode D) 5 Designation 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 separat
31、ely None Fitted Supplied separately A X X B X X C X X D X X E X X BS EN 3773-003:1999 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 int
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