1、BRITISH STANDARD BS EN 60704-2-8:1997 IEC 60704-2-8: 1997 Household and similar electrical appliances Test code for the determination of airborne acoustical noise Part 2: Particular requirements for electric shavers The European Standard EN 60704-2-8:1997 has the status of a British Standard ICS 17.
2、140.20; 97.170BSEN60704-2-8:1997 This British Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comes into effect on 15August1997 BSI 09-1999 ISBN 0 580 27895 6 National foreword This British Standard i
3、s the English langauge version of EN60704-2-8:1997. It is identical with IEC60704-2-8:1997. The UK participation in its preparation was entrusted to Technical Committee CPL/59, Performance of household electical appliances, which has the responsibility to: aid enquirers to understand the text; prese
4、nt 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 in the UK. A list of organizations represented on this committee can be
5、 obtained on request to its secretary. From 1 January 1997, all IEC publications have the number60000 added to the old number. For instance, IEC27-1 has been renumbered as IEC60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identif
6、iers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or
7、 European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contr
8、act. 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, pagesi andii, theEN title page, pages2 to5 and a
9、 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. Date CommentsBSEN60704-2-8:1997 BSI 09-1999 i Contents Page National forewo
10、rd Inside front cover Foreword 2 Text of EN 60704-2-8 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN60704-2-8 April 1997 ICS 17.140.20; 97.170 Descriptors: Household electrical appliances, shavers, acoustic measurements, airborne noise English version Household and similar electrical
11、appliances Testcodeforthe determination of airborne acoustical noise Part 2: Particular requirements for electric shavers (IEC 60704-2-8:1997) Appareils lectrodomestiques et analogues Code dessai pour la dtermination du bruit arien Partie 2: Rgles particulires pour les rasoirs lectriques (CEI 60704-
12、2-8:1997) Elektrische Gerte fr den Hausgebrauchundhnliche Zwecke Prfvorschrift fr die Bestimmung der Luftschallemission Teil 2: Besondere Anforderungen an elektrischeRasierer (IEC 60704-2-8:1997) This European Standard was approved by CENELEC on1996-12-09. CENELEC members are bound to comply with th
13、e 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 Central Secretariat o
14、r 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 status as the offic
15、ial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CENELEC European Committee for Electrotechnical
16、 Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1997 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN60704-2-8
17、:1997 EEN60704-2-8:1997 BSI 09-1999 2 Foreword The text of document59/155/FDIS, future edition1 of IEC60704-2-8, prepared by IEC TC59, Performance of household electrical appliances, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN60704-2-8 on1996-1 2-09. The followin
18、g dates were fixed: This part 2 supplements or modifies the corresponding clauses of EN60704-1:1997. Where a particular clause or subclause of part1 is not mentioned in this part2, that clause or subclause applies as far as is reasonable. Where this part2 states “addition”, “modification” or “replac
19、ement”, the relevant text of part1 is to be adapted accordingly. Subclauses which are additional to those in Part1 are numbered starting from101. Endorsement notice The text of the International Standard IEC60704-2-8:1997 was approved by CENELEC as a European Standard without any modification. Conte
20、nts Page Foreword 2 Introduction 3 1 Scope and object 3 2 Normative references 3 3 Terms and definitions 3 4 Measurement methods and acoustical environments 3 5 Instrumentation 3 6 Operation and location of appliances under test 3 7 Measurement of sound pressure levels 4 8 Calculation of sound press
21、ure and sound power levels 4 9 Information to be recorded 4 10 Information to be reported 4 Annex B (normative) Standard test table 5 Annex ZA (normative) Normative references tointernational publications with their corresponding European publications 5 latest date by which the EN has to be implemen
22、ted at national level by publication of an identical national standard or by endorsement (dop) 1997-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 1997-11-01EN60704-2-8:1997 BSI 09-1999 3 Introduction The measuring conditions specified in this Pa
23、rt2 provide for sufficient steadiness in the noise emitted and reproducibility in different laboratories, whilst simulating as far as possible the practical use of shavers. It is recommended to consider noise data as part of performance data. NOTEAs stated in the introduction to IEC704-1, this test
24、code is concerned with airborne noise only. 1 Scope and object This clause of Part1 is applicable except as follows: 1.1 Scope Replacement: This standard applies to electric shavers for domestic and similar use, supplied from mains or batteries. By similar use is understood the use in hotels, hospit
25、als, shops, offices, etc. NOTE 1This standard does not apply to shavers which are powered by other than electrical means for example by a spring-device. NOTE 2If possible, this standard can also be applied to analogous electrically operating devices such as hair clippers and depilating devices. 1.2
26、Object Addition: Requirements for the declaration of noise emission values are not within the scope of this standard. NOTEFor determining and verifying noise emission values declared in product specifications, see IEC704-3. 2 Normative references This clause of Part1 is applicable except as follows:
27、 Addition: IEC 704-1:1996, Household and similar electrical appliances Test code for the determination of airborne acoustical noise Part 1: General requirements. IEC 1254:1993, Electric shavers for household use Methods for measuring the performance. 3 Terms and definitions This clause of Part1 is a
28、pplicable except as follows: Addition: 3.101 mains shaver shaver which can be operated directly from the mains supply 3.102 rechargeable shaver shaver which is supplied by a secondary battery belonging to it 3.103 battery shaver shaver which is supplied by primary batteries 3.104 trimmer accessory i
29、ncorporated in the shaver to groom particular facial hair, for example, moustache, beard or side whiskers 4 Measurement methods and acoustical environments This clause of Part1 is applicable except as follows: 4.2 Direct method Addition: NOTEShavers can produce pure tones. If pure tone components ar
30、e present in the noise emitted, proper precautions should be taken as specified in ISO3743-1, ISO3743-2 and ISO3744. 4.3 Comparison method Addition: NOTEShavers can produce pure tones. If pure tone components are present in the noise emitted, proper precautions should be taken as specified in ISO374
31、3-1, ISO3743-2 and ISO3744. 5 Instrumentation This clause of Part1 is applicable. 6 Operation and location of appliances under test This clause of Part1 is applicable except as follows: Addition: NOTEDuring handling, care should be taken to avoid any damaging, especially of the shaving parts of the
32、appliance as these parts tend to be very delicate. 6.1 Equipping and pre-conditioning of appliances 6.1.1 Replacement: Shavers shall be equipped as for ordinary shaving. Shavers with a cutting selector shall be adjusted in such a way that the shaving head is the least visible. The shaver shall be cl
33、ean, including the hair chamber. The appliance shall be oiled with a light oil having a viscosity not exceeding20cSt at50 C. If the manufacturer prescribes a different method of cleaning or lubrication, the manufacturers method should be followed.EN60704-2-8:1997 4 BSI 09-1999 6.1.3 Replacement: Pri
34、or to noise measurements the appliance shall have been in operation for at least10min, unless otherwise specified by the manufacturer. 6.1.4 Replacement: Immediately before each series of noise measurements, the shaver is operated for35s 5s to stabilize, without load, at the highest speed. 6.2 Suppl
35、y of electric energy and of water or gas 6.2.2 Replacement: Battery operated shavers are started, for noise measurements, with fully loaded batteries as specified by the manufacturer. The batteries have to be replaced when the voltage under load has dropped below0,9times the battery voltage under lo
36、ad with fully loaded batteries. Rechargeable shavers are measured with fully charged batteries, and disconnected from any external power source. 6.4 Loading and operating of appliances during tests 6.4.1 Replacement: The shaver is to be measured under no-load condition. If speed control is provided,
37、 the highest speed setting has to be chosen. When shavers are equipped with more than one shaving head and if a selection switch for shaving heads is available, that switch setting shall be measured which gives the highest noise value. Shavers can be equipped with a trimmer. When the trimmer can be
38、switched on and off, the following measurements shall be made: only shaving heads, and the following measurements could be made: shaving heads + trimmer (if possible); only trimmer (if possible). If there is more than one position for the trimmer, that trimmer position shall be measured which gives
39、the highest noise value. 6.4.3 Addition: NOTEFor shavers which operate with an operational cycle, the loudest part of the cycle should be measured. This is preferably done by forcing the machine to operate in this loud part of the cycle. If this is not possible, the actual measurement should be done
40、 during that particular loud part of the cycle. 6.5 Location and mounting of appliances 6.5.1 Not applicable. 6.5.2 Addition: Shavers are positioned in such a way that the tangent plane of the surface, which is normally in contact with the skin, is located vertically. The longitudinal axis of the sh
41、aver is located horizontally, if possible. The height of25cm is measured from the centre of the cutting area. 6.5.3 to 6.5.5 Not applicable. 7 Measurement of sound pressure levels This clause of Part1 is applicable except as follows: 7.1 Microphone array, measurement surface and RSS location for ess
42、entially free-field conditions over reflecting plane(s) 7.1.1 to 7.1.3 Not applicable. 7.1.5 and 7.1.6 Not applicable. 8 Calculation of sound pressure and sound power levels This clause of Part1 is applicable. 9 Information to be recorded This clause of Part1 is applicable except as follows: 9.7 Ele
43、ctric supply, water supply, etc. 9.7.3 and 9.7.4 Not applicable. 9.8 Climatic conditions 9.8.3 Not applicable. 10 Information to be reported This clause of Part1 is applicable except as follows: 10.3 Test conditions for the appliance 10.3.4, 10.3.5 and 10.3.8 Not applicable.EN60704-2-8:1997 BSI 09-1
44、999 5 The annexes of Part1 apply with the following exception: Annex B (normative) Standard test table This annex of Part1 is not applicable. Annex ZA (normative) Normative references to international publications with their corresponding European publications Add: Publication Year Title EN/HD Year
45、IEC 60704-1 1997 Household and similar electrical appliances Test code for the determination of airborne acoustical noise Part 1: General requirements EN 60704-1 1997 IEC 1254 1993 Electric shavers for household use Methods for measuring the performance EN 61254 1994BS EN 60704-2-8:1997 IEC 60704-2-
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