1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21791-4 SANS 60730-2-7:2008 Edition 2 IEC 60730-2-7:2008 Edition 2SOUTH AFRICAN NATIONAL STANDARD Automatic electrical controls for househ
4、old and similar use Part 2-7: Particular requirements for timers and time switches This national standard is the identical implementation of IEC 60730-2-7:2008 and is adopted with the permission of the International Electrotechnical Commission. WARNING Can only be used in conjunction with SANS 60730
5、-1. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 60730-2-7:2008 Edition 2 IEC
6、 60730-2-7:2008 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS TC 72, Safety of electrical appliances and electronic equipment, in accordance with procedures of the SABS Standards Division, in compliance with ann
7、ex 3 of the WTO/TBT agreement. This SANS document was published in December 2008. This SANS document supersedes SANS 60730-2-7:2007 (edition 1 as modified by IEC amdt 1:1994). This standard may only be used and printed by approved subscription and freemailing clients of the SABS. IEC 60730-2-7 Editi
8、on 2.0 2008-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Automatic electrical controls for household and similar use Part 2-7: Particular requirements for timers and time switches Dispositifs de commande lectrique automatiques usage domestique et analogue Partie 2-7: Rgles particulires pour les mi
9、nuteries et les minuteries cycliques INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE U ICS 97.120 PRICE CODE CODE PRIX ISBN 2-8318-9708-4SANS 60730-2-7:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS. 2
10、60730-2-7 IEC:2008 CONTENTS FOREWORD.3 1 Scope and normative references 6 2 Definitions 7 3 General requirements.8 4 General notes on tests .8 5 Rating 8 6 Classification9 7 Information.10 8 Protection against electric shock 11 9 Provision for protective earthing .11 10 Terminals and terminations 11
11、 11 Constructional requirements.11 12 Moisture and dust resistance12 13 Electric strength and insulation resistance12 14 Heating 12 15 Manufacturing deviation and drift13 16 Environmental stress13 17 Endurance13 18 Mechanical strength .18 19 Threaded parts and connections.18 20 Creepage distances, c
12、learances and distances through solid insulation .18 21 Fire hazard testing .18 22 Resistance to corrosion 19 23 Electromagnetic compatibility (EMC) requirements emission .19 24 Components .19 25 Normal operation19 26 Electromagnetic compatibility (EMC) requirements immunity .19 27 Abnormal operatio
13、n 19 28 Guidance on the use of electronic disconnection 19 Annex D (normative) Heat, fire and tracking (applicable in Canada and the USA) 20 Annex H (normative) Requirements for electronic controls .24 Annex AA (normative) Number of cycles, automatic and manual action26 Figure D.101 Positioning of e
14、lectrodes.22 Figure D.102 Arc resistance test circuit23 Table 17.16.103.1.2 Electrical conditions for overload and endurance testing17 Table D.101 Sequence of 1-min current steps22 Table AA.1 Values for free standing, independently mounted and in-line cord timers and time switches a .26 SANS 60730-2
15、-7:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.60730-2-7 IEC:2008 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ AUTOMATIC ELECTRICAL CONTROLS FOR HOUSEHOLD AND SIMILAR USE Part 2-7: Particular requirements for timers and time switches F
16、OREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the
17、electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to
18、 technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International
19、 Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each tec
20、hnical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Pub
21、lications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their na
22、tional and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to
23、 be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Commi
24、ttees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to
25、 the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be h
26、eld responsible for identifying any or all such patent rights. International Standard IEC 60730-2-7 has been prepared by IEC technical committee 72: Automatic controls for household use. This second edition cancels and replaces the first edition published in 1990 and its Amendment 1 (1994). This sec
27、ond edition constitutes a technical revision. This new edition incorporates requirements for tungsten filament lamp loadings as well as updates the standard to IEC 60730-1:1999, Amendment 2 (2007). The text of this standard is based on the following documents: FDIS Report on voting 72/760/FDIS 72/76
28、4/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. SANS 60730-2-7:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS. 4 60730-2-7 IEC:2008 This publication
29、has been drafted in accordance with the ISO/IEC Directives, Part 2. This Part 2-7 is to be used in conjunction with IEC 60730-1. It was established on the basis of the third edition of that standard (1999) and its Amendment 1 (2003) and Amendment 2 (2007). Consideration may be given to future editio
30、ns of, or amendments to, IEC 60730-1. This Part 2-7 supplements or modifies the corresponding clauses in IEC 60730-1 so as to convert that publication into the IEC standard: Particular requirements for timers and time switches. Where this Part 2-7 states “addition“, “modification“ or “replacement“,
31、the relevant require- ment, test specification or explanatory matter in Part 1 should be adapted accordingly. Where no change is necessary, this Part 2-7 indicates that the relevant clause or subclause applies. In the development of a fully international standard, it has been necessary to take into
32、consideration the differing requirements resulting from practical experience in various parts of the world and to recognize the variation in national electrical systems and wiring rules. The “in some countries” notes regarding differing national practice are contained in the following clauses and su
33、bclauses: 4.1.4 4.3.2 6.3.6.101 Table 7.2, Notes 101 and 103 7.2.9 11.4.103 11.4.104 14.101 17.16.101.3 17.16.103.1 Table 17.2-2, Notes 101 and 102 Table 17.2-3, Notes 101 and 102 21.101 Annex D H.26.11 In this publication: 1) The following print types are used: Requirements proper: in roman type. T
34、est specifications: in italic type. Explanatory matter: in smaller roman type 2) Subclauses, notes, tables or figures which are additional to those in Part 1 are numbered starting from 101, additional annexes are lettered AA, BB, etc. A list of all parts of the IEC 60730 series, under the general ti
35、tle: Automatic electrical controls for household and similar use, can be found on the IEC website. SANS 60730-2-7:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.60730-2-7 IEC:2008 5 The committee has decided that the contents of this publi
36、cation will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. SANS 60730-2-7:2008This
37、 standard may only be used and printed by approved subscription and freemailing clients of the SABS. 6 60730-2-7 IEC:2008 AUTOMATIC ELECTRICAL CONTROLS FOR HOUSEHOLD AND SIMILAR USE Part 2-7: Particular requirements for timers and time switches 1 Scope and normative references This clause of Part 1
38、is applicable except as follows: 1.1 Replacement: In general, this part of IEC 60730 applies to timers and time switches for household and similar use that may use electricity, gas, oil, solid fuel, solar thermal energy, etc. or a combination thereof, including heating, air conditioning and similar
39、applications. This standard is also applicable to individual timers utilized as part of a control system or timers which are mechanically integral with multifunctional controls having non-electrical outlets. This standard does not apply to time-delay switches (TDS) within the scope of IEC 60669-2-3
40、1) . Throughout this standard, the word “timers” means timers and time switches, unless the type is specifically mentioned. Devices which only indicate time or passage of time are not included. This standard does not apply to multi-functional controls having an integrated timing function which is no
41、t capable of being tested as a separate timing device. 1.1.1 This standard applies to the inherent safety, to the operating characteristics where such are associated with equipment protection and to the testing of automatic electrical control devices used in appliances and other apparatus, electrica
42、l and non-electrical, for household and similar purposes, but also extended to industrial purposes when no dedicated product standards exist, such as that for central heating, air conditioning, process heating, etc. Timers for equipment not intended for normal household use, but which nevertheless m
43、ay be used by the public, such as equipment intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. This standard is also applicable to timers for appliances within the scope of IEC 60335-1. This standard does not apply to timers designed exclus
44、ively for industrial applications. Throughout this standard, the word “equipment“ means “appliance and equipment“. 1.1.2 This standard applies to automatic electrical control devices, mechanically, electromechanically, electrically or electronically operated, responsive to or controlling parameters
45、such as temperature, pressure, passage or time, humidity, light, electrostatic effect, flow or liquid level. _ 1)IEC 60669-2-3:2006, Switches for household and similar fixed electrical installations Part 2-3: Particular requirements Time-delay switches (TDS) SANS 60730-2-7:2008This standard may only
46、 be used and printed by approved subscription and freemailing clients of the SABS.60730-2-7 IEC:2008 7 1.1.3 This standard applies to automatic electrical control devices serving the starting of small motors that are used principally in appliances and apparatus for household and similar purposes. Su
47、ch control devices may be built into or be separate from the motor. 1.1.4 This standard applies to non-automatic control devices when such are associated with automatic control devices. 1.2 Replacement: This standard applies to controls with a rated voltage not exceeding 690 V and a rated current no
48、t exceeding 63 A. 1.3 Replacement: This standard does not take into account the response value of an automatic action of a control, if such a response value is dependent upon the method of mounting the control in the equipment. If a response value is of significant purpose for the safety of the user
49、 or surroundings, the value defined in the appropriate household equipment standard or as determined by the manufacturer shall apply. 1.4 Replacement: This standard applies also to timers incorporating electronic devices, requirements for which are contained in Annex H. 1.5 Normative references This subclause of Part 1 applies except as follows: Addition: IEC 60669-1:1998, Switches for household and similar fixed-electrical installations Part 1: General
