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1、BRITISH STANDARD BS ISO 7588-3:1998 Road vehicles Electrical/electronic switching devices Part 3: Microrelays ICS 43.040.10 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:08:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 7588-3:1998 This British Standard, having been prepared under
2、the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 February 1999 BSI 06-1999 ISBN 0 580 30948 7 National foreword This British Standard reproduces verbatim ISO 7588-3:1998 and implements it as the UK national st
3、andard. The UK participation in its preparation was entrusted to Technical Committee AUE/16, Electrical and electronic equipment, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or
4、 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 represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement
5、international or European publications referred to in this document may 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
6、 include all the necessary provisions of a contract. Users of British 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,
7、pages i and ii, the ISO title page, page ii, pages 1 to 4 and a back cover. This standard 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.DateComments
8、Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:08:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 7588-3:1998 BSI 06-1999i Contents Page National forewordInside front cover Forewordii 1Scope1 2Normative references1 3Definitions1 4Dimensions and other requirements1 5Functional allocat
9、ion of the terminals3 6Designation3 Annex A (informative) Dimensions of socket apertures4 Figure 11 Figure 22 Figure 32 Figure A.14 Table 13 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:08:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na,
10、 Sun Nov 26 14:08:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:08:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 7588-3:1998 ii BSI 06-1999 Foreword ISO (the International Organization for Standardization) is a worldwide federation of
11、national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Inte
12、rnational organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical co
13、mmittees 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. International Standard ISO 7588-3 was prepared by Technical Committee ISO/TC22, Road vehicles, Subcommittee SC 3, Electrical and e
14、lectronic equipment. ISO 7588 consists of the following parts, under the general title Road vehicles Electrical/electronic switching devices: Part 1: Relays and flashers; Part 2: Electronic devices; Part 3: Microrelays. Annex A of this part of ISO 7588 is for information only. Descriptors: Road vehi
15、cles, motor vehicles, electrical equipment, electric relays, subminiature relays, electric terminals, electric contacts, form specifications, dimensions, overall dimensions, position (location), contact allocation, designation. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:08:16 GMT+00:0
16、0 2006, Uncontrolled Copy, (c) BSI BS ISO 7588-3:1998 BSI 06-19991 1 Scope This part of ISO 7588 specifies dimensional characteristics and the functional allocation of microrelay terminals intended for road vehicles. Annex A gives additional information on the dimensions of socket apertures. 2 Norma
17、tive references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 7588. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO
18、7588 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 8092-1:1996, Road vehicles Connections for on-board electrical wiring harnesses Part 1:
19、Tabs for single-pole connections Dimensions and specific requirements. ISO 8092-2:, Road vehicles Connections for on-board electrical wiring harnesses Part 2: Definitions, test methods and general performance requirements1). 3 Definitions For the purposes of this part of ISO 7588, the definitions gi
20、ven in ISO 8092-2 apply. 4 Dimensions and other requirements 4.1 General Dimensional characteristics and other requirements are specified in 4.2 to 4.4. NOTEAll corresponding dimensions also apply if less than five tabs are fitted. The dimensions of socket apertures given in Annex A are for informat
21、ion only. The functional allocation of relay terminals is specified in clause 5. 4.2 Positioning zones of the tabs and socket apertures 4.2.1 Location of tabs and apertures True position See Figure 1. 4.2.2 Dimensional limits of the tabs See Figure 2. The tabs shall be in accordance with ISO 8092-1,
22、 sizes 6,3 0,8 and 4,8 0,8 respectively, and shall not have shoulders. 1) To be published. (Revision of ISO 8092-2:1996) Figure 1 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:08:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 7588-3:1998 2 BSI 06-1999 4.3 Overall dimensions and oth
23、er requirements for microrelays See Figure 3. Configurations other than rectangular are permitted, provided they lie within the specified area. However, in all cases the outside contour shall lie within the maximum dimensions given in Figure 3. 4.4 Other requirements for sockets 4.4.1 Apertures at t
24、he entering plane shall be in accordance with Figure 1 and shall accept tabs to the maximum limits. 4.4.2 In order to avoid the need for excessive withdrawal force, it is recommended that the female connectors in the socket should not incorporate detents. Figure 2 Figure 3 Licensed Copy: sheffieldun
25、 sheffieldun, na, Sun Nov 26 14:08:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 7588-3:1998 BSI 06-19993 5 Functional allocation of the terminals The terminal positions are shown in Table 1 from the terminal connection side. Table 1 6 Designation Microrelays in accordance with this part of I
26、SO 7588 shall be designated as shown in the following example. EXAMPLE TypeArrangement of the terminalsa Wiring diagram (basic types)a Functional allocation of the terminalsa M1 (Break contact) 1 = Coil plus 2 = Coil minus 3 = Switching contact input (moving contact) 4 = Switchingcontact output (bre
27、ak contact) M2 (Make contact) 1 = Coil plus 2 = Coil minus 3 = Switching contact input (moving contact) 5 = Switchingcontact output M3 (Changeover contact) 1 = Coil plus 2 = Coil minus 3 = Switching contact input (moving contact) 4 = Switching contact output (break contact) 5 = Switching contact out
28、put (make contact) a Other terminal designations may be used if the arrangement and attribution of functions comply with this specification. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:08:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 7588-3:1998 4 BSI 06-1999 Annex A (informativ
29、e) Dimensions of socket apertures A.1 General This annex is for information only, pending completion of current ISO work on dimensions of socket apertures. A definitive specification may be given in a future edition of this part of ISO 7588. A.2 Dimensions of socket apertures Socket apertures should
30、 accommodate the following tab positioning zones (see Figure A.1): at entering plane: 7,3 mm 1,6 mm for tab size 6,3 0,8; 5,8 mm 1,6 mm for tab size 4,8 0,8; at throat: 6,7 mm 1,0 mm for tab size 6,3 0,8; 5,2 mm 1,0 mm for tab size 4,8 0,8. Figure A.1 Licensed Copy: sheffieldun sheffieldun, na, Sun
31、Nov 26 14:08:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:08:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 7588-3:1998 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national bo
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