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1、BS ISO 461-1:2003 ICS 49.060; 49.100 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Aircraft Connectors for ground electrical supplies Part 1: Design, performance and test requirements Licensed CopyChinese University of Hong Kong, 21/10/2008 02:42, Uncontroll
2、ed Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 2008 BSI 2008 ISBN 978 0 580 53083 8 Amendments/corrigenda issued since publication DateComments BS ISO 461-1:2003 National foreword This British Standard is the UK implement
3、ation of ISO 461-1:2003. It supersedes BS 4G 173-1:1985 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology. A list of organizations represented on this committee can be obtained on request to
4、 its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. August Licensed CopyChinese University of Hong Kong, 21/10/200
5、8 02:42, Uncontrolled Copy, (c) BSI BS ISO 461-1:2003 Reference number ISO 461-1:2003(E) ISO 2003 INTERNATIONAL STANDARD ISO 461-1 Second edition 2003-06-01 Aircraft Connectors for ground electrical supplies Part 1: Design, performance and test requirements Aronefs Prises de courant dalimentation au
6、 sol Partie 1: Exigences concernant la conception, le fonctionnement et les essais Licensed CopyChinese University of Hong Kong, 21/10/2008 02:42, Uncontrolled Copy, (c) BSI BS ISO 461-1:2003 ISO 461-1:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes lic
7、ensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The I
8、SO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has b
9、een taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2003 All rights reserved. Unless otherwise specified, no part of this publication may be rep
10、roduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22
11、 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2003 All rights reserved Licensed CopyChinese University of Hong Kong, 21/10/2008 02:42, Uncontrolled Copy, (c) BSI BS ISO 461-1:2003 ISO 461-1:2003(E) ISO 2003 All rights reserved iii Contents P
12、age Forewordiv Introduction v 1 Scope1 2 Normative references .1 3 Terms and definitions.1 4 Design and performance requirements2 5 Inspection and testing3 6 Marking and ordering procedures.6 Licensed CopyChinese University of Hong Kong, 21/10/2008 02:42, Uncontrolled Copy, (c) BSI BS ISO 461-1:2003
13、 ISO 461-1:2003(E) iv ISO 2003 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Eac
14、h member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Internation
15、al Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standard
16、s adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject o
17、f patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 461-1 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 1, Aerospace electrical requirements. This second edition cancels and replaces the first edition (IS
18、O 461-1:1985), which has been technically revised. This edition brings the document up to date in terms of the connectors now being used on aircraft and anticipates future requirements. The testing regime for connectors has been changed to reflect existing industry practices. ISO 461 consists of the
19、 following parts, under the general title Aircraft Connectors for ground electrical supplies: Part 1: Design, performance and test requirements Part 2: Dimensions Licensed CopyChinese University of Hong Kong, 21/10/2008 02:42, Uncontrolled Copy, (c) BSI BS ISO 461-1:2003 ISO 461-1:2003(E) ISO 2003 A
20、ll rights reserved v Introduction Throughout this part of ISO 461, the minimum essential criteria are identified by the use of the imperative or the key word “shall”. Recommended criteria are identified by the use of the key word “should” and, while not mandatory, are considered to be of primary imp
21、ortance in providing serviceable, economical and practical connectors. Deviation from the recommended criteria should occur only after careful consideration, extensive testing and thorough service evaluation have shown alternative methods to be satisfactory. Licensed CopyChinese University of Hong K
22、ong, 21/10/2008 02:42, Uncontrolled Copy, (c) BSI BS ISO 461-1:2003 Licensed CopyChinese University of Hong Kong, 21/10/2008 02:42, Uncontrolled Copy, (c) BSI BS ISO 461-1:2003 INTERNATIONAL STANDARD ISO 461-1:2003(E) ISO 2003 All rights reserved 1 Aircraft Connectors for ground electrical supplies
23、Part 1: Design, performance and test requirements 1 Scope This part of ISO 461 specifies the design, performance and test requirements for electrical connectors used to supply electrical power from a ground source to an aircraft. NOTE ISO 461-2 specifies the dimensions of the connectors. 2 Normative
24、 references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 461-2, Aircraft Connectors for gr
25、ound electrical supplies Part 2: Dimensions ISO 7137, Aircraft Environmental conditions and test procedures for airborne equipment 1) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 aircraft fixed connector (receptacle) connector, installed i
26、n an aircraft, which accepts an electrical power supply via the ground supply free connector from an external ground source 3.2 ground supply free connector (plug) connector, fitted to cables from the external ground source of electrical power, which, when properly fitted to the aircraft fixed conne
27、ctor, permits an electrical supply to be passed to the aircraft 1) Endorsement, in part, of the publication EUROCAE ED-14/RTCA DO-160 (a document published jointly by the European Organization for Civil Aviation Electronics and the Radio Technical Commission for Aeronautics). Licensed CopyChinese Un
28、iversity of Hong Kong, 21/10/2008 02:42, Uncontrolled Copy, (c) BSI BS ISO 461-1:2003 ISO 461-1:2003(E) 2 ISO 2003 All rights reserved 4 Design and performance requirements 4.1 General 4.1.1 Construction The ground supply free connector shall be robust in construction and capable of withstanding hea
29、vy mechanical shocks and hard wear in use, and shall be designed to provide safe handling, for example by the avoidance of sharp edges. 4.1.2 Fungus resistance Materials used in the construction of fixed and free connectors shall be fungus-inert. 4.1.3 Metallic materials Metals used shall be corrosi
30、on-resistant or treated to resist corrosion. 4.1.4 Dissimilar materials Dissimilar materials used in intimate contact shall be protected against electrolysis and electrolytic corrosion. 4.1.5 Temperatures Aircraft fixed connectors and ground supply free connectors shall be capable of engagement, dis
31、engagement and operation at ambient temperatures between 65 C and + 65 C. They shall be capable of operating at 105 C, allowing for the temperature rise due to current carried by the connectors. 4.1.6 Automatic uncoupling Style 4 connectors shall be equipped with a positive-coupling device which wil
32、l release automatically, without damage to the aircraft fixed connector or its mounting, should the aircraft or ground supply move before uncoupling has been carried out. 4.2 Polarity or phase sequence Indications of polarity or phase shall be permanently marked on the aircraft fixed connectors and
33、the ground supply free connectors at points adjacent to the contacts, as indicated in the relevant figures in ISO 461-2. The markings shall be permanent and legible and shall be marked on the front and rear of the insert of the aircraft fixed connector. 4.3 Current ratings 4.3.1 Each of the main cur
34、rent-carrying contacts of the fixed and free connectors (as distinct from any cables connected to them) shall be capable of carrying up to 300 A (Styles 1, 2 and 3) or 350 A (Style 4) continuously, i.e. for 1 h or more (direct current or r.m.s. alternating current). 4.3.2 Each of the control male an
35、d female contacts shall be capable of carrying 35 A continuously. 4.4 Control current female contact The control current female contact of the d.c. ground supply free connector may be in two sections, insulated electrically from each other, connected only by the entry of the control male contact of
36、the aircraft fixed connector, or the female contact may be of a one-piece construction. Licensed CopyChinese University of Hong Kong, 21/10/2008 02:42, Uncontrolled Copy, (c) BSI BS ISO 461-1:2003 ISO 461-1:2003(E) ISO 2003 All rights reserved 3 4.5 Voltage rating The aircraft fixed connectors and g
37、round supply free connectors shall be capable of working continuously at the voltages specified in ISO 461-2. 4.6 Replaceability of contacts in the ground supply free connectors All the ground supply free connectors shall be capable of being replaced or repaired such that the existing cables attache
38、d to the ground supply free connector may be reused. 5 Inspection and testing 5.1 Inspection Connectors shall be examined to ensure that they meet the requirements of this part of ISO 461 and the dimensional requirements of ISO 461-2. 5.2 Testing 5.2.1 Type tests Type tests shall be carried out to p
39、rove conformance to the requirements of this part of ISO 461. Unless otherwise indicated, the tests shall be conducted at an ambient temperature between 15 C and 25 C. The tests specified in 5.3.1 to 5.3.10 shall be conducted on 11 test samples (A to K) using the sample allocation and the test order
40、 given in Table 1. Each sample shall consist of an aircraft fixed connector and an appropriate ground supply free connector. 5.2.2 Quality control tests Quality control tests shall be made on one fixed and free connector per 100, at least once a year. The sample shall be subjected to the tests speci
41、fied in 5.3.4.1 and 5.3.6. If the sample fails any test, the batch shall be deemed not to conform to the requirements of this part of ISO 461. Table 1 Type testing Allocation of samples and order of testing Sample and test order Test A B C Engagement and disengagement forces (see 5.3.1) 1 Side-load
42、test (see 5.3.2) 2 Endurance (see 5.3.3) 3 Current overload and voltage drop test (see 5.3.4) 4 Salt spray test (see 5.3.5) 1 High-voltage and insulation resistance test (see 5.3.6) 2 Vibration test (aircraft fixed connector only) (see 5.3.7) 3 Shock test (ground supply free connector only) (see 5.3
43、.8) 1 Extremes of temperature Engagement and disengagement test (see 5.3.10) 2 Fluid susceptibility test (initial qualification only) (see 5.3.9) Samples D to K (one per fluid) Licensed CopyChinese University of Hong Kong, 21/10/2008 02:42, Uncontrolled Copy, (c) BSI BS ISO 461-1:2003 ISO 461-1:2003
44、(E) 4 ISO 2003 All rights reserved 5.3 Tests 5.3.1 Engagement and disengagement forces 5.3.1.1 Styles 1, 2 and 3 Two test fixed connectors shall be constructed for each configuration of ground supply free connector, each fixed connector having male contacts of hardened and ground steel, with a surfa
45、ce finish of between 0,1 m and 0,4 m (4 in and 16 in), mounted at the centres shown in the appropriate figure in ISO 461-2, except that the tolerance on contact position shall be 0,025 mm ( 0,001 in). No shrouds shall be fitted. One test fixed connector shall have male contacts of the maximum tolera
46、nce dimension 0,005 mm ( 0,000 2 in) and the other test fixed connector shall have male contacts of the minimum tolerance dimension 0,005 mm ( 0,000 2 in). Fully engage and disengage the ground supply free connector being tested 50 times using the maximum size test fixed connector followed by 5 time
47、s using the minimum size test fixed connector. Engagement and complete separation may be accomplished by machine. Measure the force necessary to engage and disengage the ground supply free connector on the first and last insertion of each test fixed connector. For 3-pin connectors, the engaging forc
48、e shall not be greater than 223 N (50 lbf) and the disengaging force shall be between 134 N and 223 N (30 lbf to 50 lbf). For 5- and 6-pin connectors, the engaging force shall not be greater than 445 N (100 lbf) and the disengaging force shall be between 267 N and 445 N (60 lbf to 100 lbf). The rate
49、 of insertion and withdrawal shall be 177 mm/min to 229 mm/min (7 in/min to 9 in/min). 5.3.1.2 Style 4 The engaging force shall not be greater than 534 N (120 lbf) and the disengaging force shall be between 400 N and 534 N (90 lbf to 120 lbf). 5.3.2 Side-load test 5.3.2.1 Styles 1, 2 and 3 After the test described in 5.3.1.1, engage the ground supply free connector with an appropriate aircraft fixed connector mounted with its axis horizontal. With the main current-carrying male contacts