1、BRITISH STANDARD AEROSPACE SERIES Elements of electrical and optical connection Test methods Part 704: Electrical elements - Measurement of turns ratio on a transformer used in a coupler The European Standard EN 2591-704:2001 has the status ofa British Standard ICs 49.060 BS EN 2591-704:2001 BS EN 2
2、5 9 1-7041200 1 Amd. No. National foreword Date Comments This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 12 December 2001 This British Standard
3、 is the official English language version of The UKparticipation 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: EN 259 1-7041200 1. - - aid enqui
4、rers to understand the text; present to the responsible international/European committee 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
5、represented on this subcommittee can be obtained on request to its secretary. Cr oss-r e fer enc e s The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standar
6、ds 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 correct application. Compliance with a British Standard
7、 does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 and 3 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 12 Decemb
8、er 2001 ISBN O 580 38129 3 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2591-704 November 2001 ICs 49.060 English version Aerospace series - Elements of electrical and optical connection - Test methods - Part 704: Electrical elements - Measurement of turns ratio on a transformer used in a co
9、upler Srie arospatiale - Organes de connexion lectrique et optique - Mthodes dessais - Partie 704: Organes lectriques - Mesure du rapport des spires sur un transformateur utilis dans un coupleur Luft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prfverfahren - Teil 704: Elektrische
10、 Elemente - Messung des Windungsverhltnisses eines Koppelbertragers in einem Koppler This European Standard was approved by CEN on 4 June 2001 CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a nat
11、ional standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any
12、 other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany,
13、 Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN All right
14、s of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2591-704:2001 E EN 2591-704:2001 (E) Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA) . After inquiries and votes carried out in acc
15、ordance 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 publicatio
16、n of an identical text or by endorsement, at the latest by May 2002, and conflicting national standards shall be withdrawn at the latest by May 2002. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European
17、 Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 2 EN 2591-704:2001 (E) 1 VI - T 1 Scope v2 3 - I T- This standard specifies a method of measu
18、ring the turns ratio of a transformer used in a coupler. This method allows also for verification of the input and output voltage phase. It shall be used together with EN 2591-100. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publicat
19、ions. 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 or revision.
20、For undated references the latest edition of the publication referred to applies. EN 2591-100 Aerospace series - Elements of electrical and optical connection - Test methods - Part 100: General 1) 3 Preparation of specimens Unless specified in the technical specification, the following details shall
21、 be stated: - value of N, see 4; - test temperature. 4 Method Key 1 Signal generator 2 Coupler 3 Oscilloscope Figure 1 The test signal VI shall be sinusoidal, frequency 250 kHz, 10 V peak to peak. The turns ratio shall be calculated using the formula: VI N= - v2 5 Req ui rements N shall comply with
22、the value specified in the technical specification. Voltages VI and VZshall be in phase. 1) Published as AECMA Prestandard at the date of publication of this standard 3 BS EN 2591-704:2001 BSI 389 Chiswick High Road Lon don w4 4AL BSI is the independent national body responsible for preparing Britis
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