1、 IEC 60730-2-7 Edition 3.0 2015-03 INTERNATIONAL STANDARD Automatic electrical controls Part 2-7: Particular requirements for timers and time switches IEC 60730-2-7:2015-03(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland All rights reserved. Unless otherwise speci
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10、re.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. IEC 60730-2-7 Edition 3.0 2015-03 INTERNATIONAL STANDARD Automatic electrical controls Part 2-7: Particular requirements for timers and time switc
11、hes INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 97.120 ISBN 978-2-8322-2432-8 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 IEC 60730-2-7:2015 IEC 2015 CONTENTS FOREWORD . 3 1 Scope and
12、normative references . 6 2 Definitions . 7 3 General requirements 8 4 General notes on tests 8 5 Rating 8 6 Classification . 8 7 Information 9 8 Protection against electric shock . 10 9 Provision for protective earthing 10 10 Terminals and terminations 10 11 Constructional requirements 10 12 Moistur
13、e and dust resistance . 11 13 Electric strength and insulation resistance . 11 14 Heating 11 15 Manufacturing deviation and drift . 11 16 Environmental stress . 12 17 Endurance . 12 18 Mechanical strength 17 19 Threaded parts and connections 17 20 Creepage distances, clearances and distances through
14、 solid insulation . 17 21 Resistance to heat, fire and tracking 17 22 Resistance to corrosion . 17 23 Electromagnetic compatibility (EMC) requirements emission . 17 24 Components 18 25 Normal operation . 18 26 Electromagnetic compatibility (EMC) requirements immunity 18 27 Abnormal operation . 18 28
15、 Guidance on the use of electronic disconnection . 18 Annex H (normative) Requirements for electronic controls . 19 Annex AA (normative) Number of cycles, automatic and manual action 23 Bibliography 24 Table 14 Electrical conditions for the overvoltage test 13 Table 15 Electrical conditions for the
16、overload tests of 17.7 and 17.10 13 Table 16 Electrical conditions for the overload tests of 17.8, 17.9, 17.11, 17.12 and 17.13 13 Table 101 Electrical conditions for overload and endurance testing 16 Table AA.1 Values for free standing, independently mounted and in-line cord timers and time switche
17、s a. 23 IEC 60730-2-7:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ AUTOMATIC ELECTRICAL CONTROLS Part 2-7: Particular requirements for timers and time switches FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising al
18、l national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Te
19、chnical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory w
20、ork. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
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22、endations 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 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any
23、 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 national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publ
24、ication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by indepe
25、ndent certification bodies. 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 Committees for any p
26、ersonal 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 the Normative
27、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 held responsible
28、 for identifying any or all such patent rights. International Standard IEC 60730-2-7 has been prepared by IEC technical committee 72: Automatic electrical controls. This third edition cancels and replaces the second edition published in 2008. This third edition constitutes a technical revision. This
29、 new edition revises the compliance criteria of type 1.S and 2.S action, revises the requirements for filament lamp loads, adds requirements for abnormal operation in Annex H, removes some special requirements for single countries as well as updates the standard to IEC 60730-1:2010, fourth edition.
30、This Part 2-7 is intended to be used in conjunction with IEC 60730-1. It was established on the basis of the fourth edition (2010) of that publication. IEC 60730-1 Ed. 5 is available, and this part 2-7 will be aligned with that edition in the future. Consideration may be given to future editions of,
31、 or amendments to, IEC 60730-1. 4 IEC 60730-2-7:2015 IEC 2015 The title of IEC 60730-2-7 Ed.3 has been updated to the title of IEC 60730-1 Ed.5.0. However, IEC 60730-2-7 Ed.3.0 has not been updated in accordance with the technical requirements in IEC 60730-1 Ed. 5.0. This Part 2-7 supplements or mod
32、ifies 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“, the relevant require- ment, test specification or explanatory matter i
33、n 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 consideration the differing requirements resulting from practical expe
34、rience 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 subclauses: 6.3.6.101 Table 1, Notes 101 and 103 7.2.9 11.4.104 17.16.10
35、1.1 17.16.101.3 17.16.103.1 Table 15, Notes 101 and 102 Table 16, 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. Test specifications: in italic type. Explanatory matter: in smaller roman type 2) Subclauses, not
36、es, tables or figures which are additional to those in Part 1 are numbered starting from 101, additional annexes are lettered AA, BB, etc. The text of this standard is based on the following documents: CDV Report on voting 72/926/CDV 72/959/RVC Full information on the voting for the approval of this
37、 standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. IEC 60730-2-7:2015 IEC 2015 5 A list of all parts of the IEC 60730 series, under the general title: Automatic electrical controls, can be
38、found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, with
39、drawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. 6 IEC 60730-2-7:2015 IEC 2015 AUTOMATIC ELECTRICAL CONTROLS Part 2-7: Particular requirements for timers and time switches 1 Scope and normative references This clause of Part 1 i
40、s applicable except as follows: 1.1 Replacement: In general, this part of IEC 60730 applies to timers and time switches that may use electricity, gas, oil, solid fuel, solar thermal energy, etc. or a combination thereof, including heating, air conditioning and similar applications. This standard is
41、also applicable to individual timers utilized as part of a control system or timers which are mechanically integral with multifunctional controls having non-electrical outputs. This standard does not apply to time-delay switches (TDS) within the scope of IEC 60669-2-3. NOTE 1 Throughout this standar
42、d, the word “timers” means timers and time switches, unless the type is specifically mentioned. NOTE 2 Devices which only indicate time or passage of time are not included. NOTE 3 This standard does not apply to multi-functional controls having an integrated timing function which is not capable of b
43、eing tested as a separate timing device. 1.1.1 Replacement: This standard applies to the inherent safety, to the operating characteristics where such are associated with equipment protection and to the testing of timers used in appliances and other apparatus, electrical and non-electrical, for house
44、hold 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 may be used by the public, such
45、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. 1.1.2 Replacement: This standard applies to manual controls when such are electricall
46、y and/or mechanically integral with timers. 1.4 Replacement: This standard applies also to timers incorporating electronic devices, requirements for which are contained in Annex H. This standard applies also to timers using NTC or PTC thermistors, requirements for which are contained in Part 1, Anne
47、x J. IEC 60730-2-7:2015 IEC 2015 7 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 requirements 1IEC 60669-1:1998/AMD1:1999 IEC 60669-1:1998/AMD2:2006 IEC 60695-
48、11-10:2013, Fire hazard testing Part 11-10: Test flames 50 W horizontal and vertical flame test methods 2 Definitions This clause of Part 1 is applicable except as follows: 2.3 Definitions relating to the function of controls Additional definition: 2.3.101 timing cycle program including all the swit
49、ching activities involved in a start-to-finish operation of a controlled appliance 2.5 Definitions of types of control according to construction Additional definitions: 2.5.101 plug-in timer timer or time switch designed for direct plug-in to a socket-outlet Note 1 to entry: The plug-in timer is equipped with conductor blades, pins or other means, protruding from the enclosure of the control or the control body itself, to match the dimensional parameters of the socket
