1、BRITISH STANDARD BS EN 60512-2-2:2003 Connectors for electronic equipment Tests and measurements Part 2-2: Electrical continuity and contact resistance tests Test 2b: Contact resistance Specified test current method The European Standard EN 60512-2-2:2003 has the status of a British Standard ICS 31.
2、220.10 BS EN 60512-2-2:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2003 BSI 31 July 2003 ISBN 0 580 42328 X National foreword This British Standard is the official English language version of EN 60512-2-2:2003.It is identical
3、 with IEC 60512-2-2:2003. The UK participation in its preparation was entrusted by Technical Committee EPL/48, Electromechanical components and mechanical structures for electronic equipment, to Subcommittee EPL/48/2, Connectors, which has the responsibility to: A list of organizations represented o
4、n this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or
5、by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. 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 does not of itself confer immu
6、nity from legal obligations. aid enquirers 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
7、 in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 5 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEURO
8、PEAN STANDARD EN 60512-2-2 NORME EUROPENNE EUROPISCHE NORM July 2003 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELE
9、C - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60512-2-2:2003 E ICS 31.220.10 English version Connectors for electronic equipment - Tests and measurements Part 2-2: Electrical continuity and contact resistance tests - Test 2b: Contact
10、resistance - Specified test current method (IEC 60512-2-2:2003) Connecteurs pour quipements lectroniques - Essais et mesures Partie 2-2: Essais de continuit lectrique et de rsistance de contact - Essai 2b: Rsistance de contact - Mthode du courant dessai spcifi (CEI 60512-2-2:2003) Steckverbinder fr
11、elektronische Einrichtungen - Mess- und Prfverfahren Teil 2-2: Prfungen des elektrischen Durchgangs und Durchgangswiderstands - Prfung 2b: Durchgangswiderstand - Mit vorgeschriebenem Strom (IEC 60512-2-2:2003) This European Standard was approved by CENELEC on 2003-07-01. CENELEC members are bound to
12、 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 to the Centra
13、l Secretariat or to any CENELEC 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 CENELEC member into its own language and notified to the Central Secretariat has the same stat
14、us as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerlan
15、d and United Kingdom. Foreword The text of document 48B/1321/FDIS, future edition 1 of IEC 60512-2-2, prepared by SC 48B, Connectors, of IEC TC 48, Electromechanical components and mechanical structures for electronic equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENE
16、LEC as EN 60512-2-2 on 2003-07-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2004-04-01 latest date by which the national standards conflicting with the EN have to be wi
17、thdrawn (dow) 2006-07-01 _ Endorsement notice The text of the International Standard IEC 60512-2-2:2003 was approved by CENELEC as a European Standard without any modification. _ Page2 EN6051222:2003 CONNECTORS FOR ELECTRONIC EQUIPMENT TESTS AND MEASUREMENTS Part 2-2: Electrical continuity and conta
18、ct resistance tests Test 2b: Contact resistance Specified test current method 1 Scope and object This part of IEC 60512, when required by the detail specification, is used for testing connectors for electronic equipment within the scope of IEC technical committee 48. This test may also be used for s
19、imilar devices when specified in a detail specification. The object of this test is to define a standard test method to measure the electrical resistance across a pair of mated contacts or a contact with a measuring gauge. 2 General measuring requirements Measurements may be carried out with direct
20、current or alternating current. For a.c. measure- ments, the frequency shall not exceed 2 kHz. In the case of dispute, the d.c. measurements shall govern. The uncertainly of the measuring apparatus shall not exceed 1 %. 3 Method of measurement 3.1 Measurement details The contact resistance shall be
21、derived normally from the voltage drop measured between the zones intended for connection of the wiring to the contacts at the points specified in the detail specification. The contact shall not be operated while the measuring voltage is applied. Care must be taken during the measurement to avoid ex
22、erting abnormal pressure on the contacts under test and to avoid movement of the test cables. Where the measuring points specified in the detail specification are not directly accessible, the resistance of the cable or wire used shall be subtracted from the measured value. The corrected value shall
23、be recorded. The contacts to be measured shall be chosen in accordance with the detail specification. 3.2 Test current and voltage The contact resistance shall be measured with the alternating current or direct current as specified in the detail specification. The test voltage shall be at least 1 V
24、d.c. or a.c. peak. Measurements shall be made on individual contacts within the minute following application of the test current. Page3 EN6051222:2003 4 Measuring cycles 4.1 Measurement with direct current One measuring cycle consists of a) application of the voltage; b) measurement with current flo
25、wing in one direction; c) measurement with current flowing in the opposite direction; d) disconnection of the voltage source. 4.2 Measurement with alternating current One measuring cycle consists of a) application of the voltage; b) making the measurement; c) disconnection of the voltage source. NOT
26、E Unless otherwise specified, the made contact(s) should not be disturbed between the end of the preceding test and the application of the voltage in this test. 5 Requirements The value of the contact resistance shall not exceed, for any measurement, the value specified in the detail specification.
27、The contact resistance measurement with d.c. shall be the average of the two readings obtained with forward and reverse current. Use of the following equation will ensure that the calculated resistance is always correct: r f mr mf I I V V R + = where R is the resistance; V mfis the measured forward
28、voltage; V mris the measured reverse voltage; I fis the forward current; I ris the reverse current. NOTE 1 In the equation the sign of the voltage measurements must be included. NOTE 2 Any deviation from the standard test procedure should be clearly indicated in the test report. Page4 EN6051222:2003
29、 6 Details to be specified When this test is required by the detail specification, the following details shall be specified: a) the measuring points; b) the number of contacts to be measured; c) the measuring current; d) the permissible limits of contact resistance; e) any deviation from the standar
30、d test method. _ Page5 EN6051222:2003BS EN 60512-2-2:2003 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is
31、incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if
32、 anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400. BSI offers members an individual updating
33、service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: orders
34、bsi-. Standards are also available from the BSI website at http:/www.bsi-. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. Information on standards BSI provides a
35、wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: +44 (0
36、)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: infobsi-. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 70
37、02. Fax: +44 (0)20 8996 7001. Email: membershipbsi-. Information regarding online access to British Standards via British Standards Online can be found at http:/www.bsi- Further information about BSI is available on the BSI website at http:/www.bsi-. Copyright Copyright subsists in all BSI publicati
38、ons. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photo
39、copying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: copyrightbsi-.
