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1、BRITISH STANDARD BS 3456-101: 1987 Reprinted, incorporating Amendment No. 1 Specification for Safety of household and similar electrical appliances Part 101: General requirements UDC 614.825:64.06 83 Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 09:12:25 GMT+00:00 2006, Uncontrolled Copy, (
2、c) BSI BS 3456-101:1987 This British Standard, having been prepared under the direction of the Light Electrical Engineering Standards Committee, was published under the authority of the Board of BSI and comes into effect on 30 April 1987 BSI 10-1999 First published as BS 3456-1 February 1974 Part nu
3、mber amended to Part 101 November 1975 First revision June 1976 Second revision December 1978 Third revision April 1987 The following BSI references relate to the work on this standard: Committee reference LEL/161 Draft for comment 84/27750 DC ISBN 0 580 15768 7 Committees responsible for this Briti
4、sh Standard The preparation of this British Standard was entrusted by the Light Electrical Engineering Standards Committee (LEL/-) to Technical Committee LEL/161 upon which the following bodies were represented: Association of Control Manufacturers, (TACMA) (BEAMA Ltd.) Association of Manufacturers
5、of Domestic Electrical Appliances British Electrotechnical Approvals Board British Gas plc British Lawn Mower Manufacturers Federation British Retailers Association Catering Equipment Manufacturers Association Consumer Standards Advisory Committee of BSI Consumers Association Department of Energy (E
6、lectricity Division) Department of Trade and Industry (Consumer Safety Unit, C A Division) ERA Technology Ltd. Economic Development Council Electric Cable Makers Confederation Electrical Association for Women Electrical Installation Equipment Manufacturers Association (BEAMA Ltd.) Electricity Supply
7、 Industry in England and Wales Fire Protection Association Home Office Institution of Electrical Engineers Lighting Industry Federation Ltd. Ministry of Defence Portable Electric Tool Manufacturers Association Rotating Electrical Machines Association (BEAMA Ltd.) Small Electrical Appliances Marketin
8、g Association South of Scotland Electricity Board Amendments issued since publication Amd. No.Date of issueComments 6055August 1990Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 09:12:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3456-101:1987 BSI 10-
9、1999i Contents Page Committees responsibleInside front cover Forewordiii 1Scope1 2Definitions1 3General requirements5 4General conditions for the tests5 5Rating7 6Classification7 7Marking7 8Protection against electric shock11 9Starting of motor-operated appliances13 10Input and current14 11Heating14
10、 12Operation under overload conditions of appliances with heating elements16 13Electrical insulation and leakage current at operating temperature19 14Radio and television interference suppression20 15Moisture resistance20 16Insulation resistance and electric strength23 17Overload protection25 18Endu
11、rance25 19Abnormal operation26 20Stability and mechanical hazards29 21Mechanical strength29 22Construction30 23Internal wiring35 24Components36 25Supply connection and external flexible cables and cords38 26Terminals for external conductors43 27Provision for earthing46 28Screws and connections47 29C
12、reepage distances, clearances and distances through insulation49 30Resistance to heat, fire and tracking50 31Resistance to rusting53 32Radiation, toxicity and similar hazards53 Appendix A Electronic circuits65 Appendix B Measurement of creepage distances and clearances70 Appendix C Classification of
13、 controls in accordance with BS 3955 as type 1 or type 273 Appendix D Thermal controls and overload releases73 Appendix E Switches for appliances74 Figure 1 Standard test finger54 Figure 2 Test pin54 Figure 3 Test probe55 Figure 4 Diagram for leakage current measurement at operating temperature for
14、single-phase connection of class II appliances55 Figure 5 Diagram for leakage current measurement at operating temperature for single-phase connection of appliances other than those of class II55 Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 09:12:25 GMT+00:00 2006, Uncontrolled Copy, (c) B
15、SI BS 3456-101:1987 ii BSI 10-1999 Page Figure 6 Diagram for leakage current measurement at operating temperature for three-phase connection of class II appliances56 Figure 7 Diagram for leakage current measurement at operating temperature for three-phase connection of appliances other than those of
16、 class II56 Figure 8 Diagram for electric strength test at operating temperature57 Figure 9 Vertical rain apparatus57 Figure 10 Splash apparatus58 Figure 11 Spray apparatus59 Figure 12 Impact test apparatus59 Figure 13 Device for testing shoulders in conduit entries60 Figure 14 Ball-pressure apparat
17、us60 Figure 15 Hot mandrel apparatus61 Figure 16 Arrangement and dimensions of electrodes for tracking test62 Figure 17 Apparatus for flexing test63 Figure 18 Schematic representation of cord anchorages64 Figure A.1 Examples of constructions of appliances incorporating electronic circuits69 Figure A
18、.2 Example of electronic circuit with low power points70 Table 1 Diameter of silver wire for fuse test13 Table 2 Permissible variations in rated input14 Table 3 Permissible temperature rises17 Table 4 Insulation resistance23 Table 5 Test voltages24 Table 6 Endurance test operating time25 Table 7 Lim
19、iting temperatures of windings under abnormal operation28 Table 8 Permissible temperature rises under abnormal operation28 Table 9 Test force for screwed glands30 Table 10 Size of cable and conduit entries38 Table 11 Size of flexible cord39 Table 12 Test figures for flexible cord pull and torque42 T
20、able 13 No requirement42 Table 14 Conductor cross-sectional areas for which terminals are to be suitable45 Table 15 Dimensions of pillar-type terminals45 Table 16 Dimensions of screw-type terminals45 Table 17 Dimensions of stud-type terminals45 Table 18 Axial pull on conductors46 Table 19 Torque val
21、ues for screws and nuts49 Table 20 Creepage distances and clearances52 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 09:12:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3456-101:1987 BSI 10-1999iii Foreword This Part of BS 3456, having been prepa
22、red under the direction of the Light Electrical Engineering Standards Committee, supersedes BS 3456-101:1978 which is withdrawn. To facilitate alignment with IEC Publications and CENELEC1) Harmonization Documents it has become necessary to revert to the arrangement for BS 3456 as was used in the 196
23、6 and 1969 editions with the general requirements for all types of appliance gathered together in one Part and the particular requirements for each type of appliance published in separate Sections, which are read in conjunction with the general requirements. The publication of seventeen separate Sec
24、tions of BS 3456 is in hand and these Sections when used together with this Part will specify the requirements for a wide range of appliances. These new publications will be aligned with their respective CENELEC Harmonization Documents which in turn are based on the IEC Publications. This edition of
25、 Part 101 is an editorial re-arrangement of the 1978 edition as modified by Amendment 1. The 1978 edition was prepared as a base document for various “stand alone” product specifications for particular appliances which were published as Sections of BS 3456-3 “Complete particular specifications”. Thi
26、s revision of Part 101 is the implementation in a British Standard of CENELEC Harmonization Document 251 S3 which is based on the second edition of IEC Publication 335-1, including Amendments 1 and 2. This specification may also be used as guidance in those cases where an appliance exists for which
27、particular requirements have not yet been prepared. Particular requirements for various appliances are given in Sections of BS 3456-102. Amendments 3, 4, 5 and 6 have been published to IEC Publication 335-1. In CENELEC a European Standard has been issued in 1988 based on IEC Publication 335-1 includ
28、ing Amendment 3, and it is being published in the United Kingdom as a new Part 201 of BS 3456. Amendments 1, 2 and 3 to CENELEC HD 251 S3 were implemented by an amendment to this standard. However, this edition of Part 101 will be required for a number of years to provide the general requirements fo
29、r a variety of products specified in current CENELEC Harmonization Documents. Amendments 1, 2 and 3 to CENELEC HD 251 S3 were implemented by an amendment to this standard. CENELEC Harmonization Documents recognize certain national deviations which cannot, for the moment, be removed. Such United King
30、dom departures, in accordance with CENELEC Regulations, are denoted in the text by marginal marking as shown below2). Deviations for other countries may be ascertained by reference to the relevant CENELEC Harmonization Document. The clause and subclause numbering in this standard is the same as that
31、 in the second edition of IEC Publication 335-1:1976. In the IEC Publication the tables are not numbered but they are located in the same clauses as in this British Standard. The figure numbers are the same in both standards except that Figure 17 in this standard is Figure 18 in the IEC Publication
32、and vice versa. Appendix A and Appendix B are technically equivalent to appendices B and E of IEC Publication 335-1. The situation with regard to the other appendices that appear in IEC Publication 335-1 is as follows. Appendix A “Thermal controls and overload releases” is Appendix D in this standar
33、d. Appendix C “Construction of safety isolating transformers” is deleted by CENELEC HD 251 S3 and in the United Kingdom the product is specified in BS 3535. 1) IEC = International Electrotechnical Commission CENELEC = European Committee for Electrotechnical Standardization 2) Licensed Copy: sheffiel
34、dun sheffieldun, na, Wed Nov 29 09:12:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3456-101:1987 iv BSI 10-1999 Appendix D “Alternative requirements for protected motor units” is deleted by CENELEC HD 251 S3 because the method is not applicable. Additional subclauses introduced either by modific
35、ations in the CENELEC Harmonization Document or by United Kingdom deviations to the Harmonization Document are numbered I, II, etc.; if they are United Kingdom deviations they also have the marginal marking shown below2). Appliances complying with British Standards in the BS 3456 series are not nece
36、ssarily suitable for use in premises to which the Offices, Shops and Railway Premises Act, 1963, the Factories Act, 1961 and the Health and Safety at Work, etc. Act apply. Compliance with the Electrical Equipment (Safety) Regulations 1975 will generally be assured if appliances comply with BS 3456.
37、For more precise details regarding the relevance of BS 3456 to the Regulations, reference should be made to the “Administrative Guidance on the Electrical Equipment (Safety) Regulations 1975 and the Electrical Equipment (Safety) (Amendment) Regulations 1976”, available from HMSO (ISBN 0 11 513 817 X
38、). Attention is drawn to the fact that it is possible that household appliances may need to comply with additional non-safety requirements specified in the Building Regulations and/or the Water Byelaws. A British Standard does not purport to include all the necessary provisions of a contract. Users
39、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, pages i to iv, pages 1 to 76, an inside back cover and a ba
40、ck 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. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 09:12:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3456-101:1987
41、 BSI 10-19991 1 Scope 1.1 This Part of BS 3456 specifies the general requirements for a wide range of electric heating appliances and electric motor-operated or magnetically-driven appliances for household and similar purposes. The particular requirements for specific types of appliances are specifi
42、ed in the various Sections of Part 102 of BS 3456. For a given appliance, Part 101 is to be considered together with the appropriate Section, which contains clauses to supplement or modify some of the corresponding clauses in Part 101 to provide the complete requirements for each type of product. Ap
43、pliances not intended for normal household use, but which nevertheless may be a source of danger to the public, such as appliances intended to be used by lay people in shops, in light industry and on farms, are within the scope of this standard. Examples of such appliances are appliances for hairdre
44、ssers, soldering irons, glue pots, sterilizers, infra-red radiation appliances, feed boilers, water pumps and lawn mowers. So far as is practicable this standard deals with the common hazards presented by appliances which are encountered by all persons in and around the home. However, except in so f
45、ar as this standard deals with electric toys, it does not in general take into account the use of appliances by young children or infirm persons without supervision; for such use additional requirements may be necessary. This standard does not apply to the following appliances: a) appliances designe
46、d exclusively for industrial purposes; b) appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive atmosphere (dust, vapour or gas); c) separate motors; d) appliances for high frequency heating except microwave ovens; e) radio and television r
47、eceiving appliances (covered by BS 415); f) appliances covered by BS 5724-1. Gramophones and similar motor-operated appliances intended to be used in, or in combination with, sound or vision equipment are tested together with such equipment, in accordance with BS 415. For appliances intended to be u
48、sed in vehicles or on board ships or aircraft, additional requirements may be necessary. For appliances intended to be used in tropical countries, special requirements may be necessary. 1.2 This standard is concerned with safety and takes into account the influence on safety of components necessary
49、to achieve a required degree of radio and television interference suppression. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions 2.1 Where the terms “voltage” and “current” are used, they imply the r.m.s. values unless otherwise specified. Where the term motor is used, it includes magnetic drive units. 2.2 For the purposes of this British Standard the following definitions, with the exception of definitions 2.2.16 and 2.2.17, ap