BS EN 61254-1994 Electric shavers for household use - Methods for measuring the performance《家用电动剃须刀 性能测量方法》.pdf

1、BRITISH STANDARD BS EN 61254:1994 IEC1254:1993 Electric shavers for household use Methods for measuring the performance The European Standard EN61254:1994 has the status of a BritishStandard UDC646.72:687.53.052:672.715.3BSEN61254:1994 This BritishStandard, having been prepared under the directionof

2、 the Light Electrical Engineering Standards Policy Committee, was published underthe authority of the Standards Board and comes intoeffect on 15 August1994 BSI01-2000 The following BSI references relate to the work on this standard: Committee reference LEL/59 Draft for comment92/23622DC ISBN 0 580 2

3、3450 9 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: Austria Italy Belgium Luxembourg Denmark Netherlands Finland Norway Franc

4、e Portugal Germany Spain Greece Sweden Iceland Switzerland Ireland UnitedKingdom Amendments issued since publication Amd. No. Date CommentsBSEN61254:1994 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN61254 5 National annex NA (info

5、rmative) Committees responsible Inside back coverBSEN61254:1994 ii BSI 01-2000 National foreword This BritishStandard has been prepared under the direction of the Light Electrical Engineering Standards Policy Committee and is the English language version of EN61254:1994, Electric shavers for househo

6、ld use Methods for measuring the performance, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC1254:1993, first edition, published by the International Electrotechnical Commission (IEC). The text of the International Standard IEC1254:1993 wa

7、s approved by CENELEC as a European Standard without any modification. A British Standard does not purport to 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 imm

8、unity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to40, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be

9、indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN61254 April1994 UDC646.72:687.53.052:672.715.3 Descriptors: Household electrical appliances, electric shavers, performance, characteristics, measurements English version Electric shavers fo

10、r household use Methods for measuring the performance (IEC1254:1993) Rasoirs lectriques usage domestique Mthodes de mesure de laptitude la fonction (CEI1254:1993) Elektrische Haushalt Rasierer Prfverfahren zur Bestimmung der Gebrauchseigenschaften (IEC1254:1993) This European Standard was approved b

11、y CENELEC on 1994-03-08. CENELEC members are bound to comply with the 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 s

12、tandards may be obtained on application to the Central Secretariat or 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

13、notified to the Central Secretariat has the same status as the official 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, Switzerlan

14、d and UnitedKingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1994 Copyright reserved to CENELEC members Ref. No. EN61254:1

15、994 EEN61254:1994 BSI 01-2000 2 Foreword The text of document59(CO)33, as prepared by IEC Technical Committee59: Performance of household electrical appliances, was submitted to the IEC-CENELEC parallel vote in July1993. The reference document was approved by CENELEC as EN61254 on8 March1994. NOTESw

16、eden has no obligation to implement this European Standard. The following dates were fixed: For products which have complied with the relevant national standard before1995-03-15, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production unti

17、l2000-03-15. Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given only for information. In this standard, Annex A, Annex B, Annex C and Annex D are normative and Annex E and Annex F are informative. Contents Page Foreword 2 Introduction 5 1

18、Scope 5 2 Definitions 5 3 List of measurements 6 4 General conditions for measurements 6 5 Measuring methods for dimensions 6 5.1 Overall dimensions 6 5.2 Mass 6 5.3 Length of the supply cord 6 6 Determination of the operation time per charge 6 6.1 Operation time per battery charge 6 6.2 Operation t

19、ime per primary battery 6 7 Shaving performance 6 7.1 Composition of the test panels 6 7.2 Test duration and test procedure 7 7.3 Distribution of the shavers 7 7.4 Statistical analysis 8 7.5 Final ranking 8 8 Trimmer performance 8 9 Gravimetric analysis of the difference in closeness of shave 8 9.1

20、Composition of the test panels 9 9.2 Test procedure and distribution scheme 9 9.3 Conversion from mass into average residual hair-stubble length 10 9.4 Statistical analysis 10 Annex A (normative) Questionnaires 12 Annex B (normative) Instructions to the testers 17 Annex C (normative) Distribution sc

21、heme 17 Annex D (normative) Possible variations in the testing scheme 20 Annex E (informative) Application of the method 20 Annex F (informative) Bibliography 39 Figure 1 Schematic presentation of the test procedure 11 Table 1 Sources of variation and associated number of degrees of freedom 8 Table

22、C.1 18 Table C.2 18 latest date of publication ofan identical national standard (dop) 1995-03-15 latest date of withdrawal ofconflicting national standards (dow) 1995-03-15EN61254:1994 BSI 01-2000 3 Page Table C.3 Introduction period and first week of the distribution scheme 19 Table E.1 Interaction

23、 of panels x types 22 Table E.2 Result analysis of variance of “shaving time” 23 Table E.3 Result analysis of variance of “final closeness on cheek, chin and under the nose” 24 Table E.4 Result analysis of variance of “final closeness in the neck” 25 Table E.5 Result analysis of variance of “skin ir

24、ritation in the neck” 26 Table E.6 Result analysis of variance of “total jugdment of use and comfort” 27 Table E.7 Result analysis of variance of “handling shaver” 28 Table E.8 Result analysis of variance of “shaving on difficult to reach places” 29 Table E.9 Result analysis of variance of “on/off s

25、witch” 30 Table E.10 Result analysis of variance of “noise” 31 Table E.11 Result analysis of variance of “vibration” 32 Table E.12 Result analysis of variance of “retention of hair” 33 Table E.13 Result analysis of variance of “cleaning method” 34 Table E.14 Result analysis of variance of “instructi

26、ons for use” 35 Table E.15 Result analysis of variance of “storage in the original case” 36 Table E.16 Possible rating for consumer presentation 374 blankEN61254:1994 BSI 01-2000 5 Introduction Determination of the performance characteristics of dry shavers is usually based on the subjective analysi

27、s of a test panel. The results of such a test programme may be affected by prolonged use of a certain type of shaver prior to test and subsequent use of a particular shaver system during a test. Intrusive advertising campaigns may have an influence as well. In the test method of this standard such p

28、roblems are largely overcome by taking the following measures: a) Care is taken to ensure that different shaver systems (rotary and vibratory) are represented by equal numbers of shaver users. b) To maintain the balance between the shaver systems throughout the entire test period, each tester uses h

29、is own shaver prior to using each test shaver. c) Conclusions on differences between shavers are based on statistical analysis, taking into account possible user-effects(seepointa). NOTEWhereas the performance data are assessed on a non-comparative basis, the results should be evaluated by compariso

30、n. 1 Scope This International Standard states and defines the principal performance characteristics for mens electric shavers, which are of interest to the user, and describes standard methods for measuring these characteristics. This standard is not concerned with safety or with performance require

31、ments. 2 Definitions 2.1 mains shaver shaver which can be operated directly from the mains supply NOTEThe shaver may also be suitable for an additional power source. 2.2 rechargeable shaver shaver which is supplied by a rechargeable battery belonging to it NOTEA rechargeable shaver may also be opera

32、ted directly from the mains supply. 2.3 battery shaver shaver which is supplied by primary batteries 2.4 car shaver shaver which is supplied by a car or boat battery 2.5 rotary shaver shaver with round shaving head(s) and usually rotating cutters 2.6 vibratory shaver shaver with linear shaving head(

33、s) and usually vibrating cutters 2.7 trimmer accessory incorporated in the shaver, to groom particular facial hair, e.g.,moustache, beard or side whiskersEN61254:1994 6 BSI 01-2000 3 List of measurements Performance is determined by carrying out the following measurements: Overall dimensions(5.1). M

34、ass(5.2). Length of the supply cord(5.3). Operation time per battery charge(6.1). Operation time per primary battery (for battery shavers only)(6.2). Shaving performance(clause7). Trimmer performance(clause8). Gravimetric analysis of the difference in closeness of shave(clause9). 4 General condition

35、s for measurements Unless otherwise specified, the measurements are made under the following conditions: 5 Measuring methods for dimensions 5.1 Overall dimensions The maximum overall dimensions of the shaver height, length and width or diameter are measured and indicated in millimetres. Any fixed pr

36、ojection on the appliance itself is taken into account, including control knobs and the cord guard of any supply cord. Movable parts such as the trimmer are in the closed position. The overall dimensions of the storage case are also measured. 5.2 Mass The mass of the shaver in use is measured and in

37、dicated in grams to the nearest five grams. NOTE“Shaver in use” means without protection cap but with batteries or supply cord, as appropriate. 5.3 Length of the supply cord The distance between the entry points into the shaver and the plug, including any cord guard, is measured. Coiled cords are st

38、retched with a pull of approximately1daN, and indicated in metres rounded down to the nearest0,05m. 6 Determination of the operation time per charge 6.1 Operation time per battery charge After being fully charged and discharged, the batteries are fully charged according to the instructions for use.

39、The shaver is operated for periods of5min, separated by intervals of24h. The test is terminated when the cell voltage drops below1,05V with the shaver running in free air. The operation time is expressed in minutes. NOTEThe operation time resulting from this test procedure will be higher than the ti

40、me resulting from practical use. 6.2 Operation time per primary battery The shaver is operated as specified in6.1 using new batteries. The test is terminated when the cell voltage drops to approximately0,9V with the shaver running in free air. The operation time is expressed in minutes. NOTEThe oper

41、ation time resulting from this test procedure will be higher than the time resulting from practical use. 7 Shaving performance 7.1 Composition of the test panels Each panel is to be composed so that it is reasonably representative of the adult male population of the country in which the test is perf

42、ormed, particular attention being paid to hair density, rate of beard growth, toughness of the beard, sensitivity towards skin irritation, and the time taken to shave. Ambient temperature: 20 C 5 C. Supply voltage: rated voltage.EN61254:1994 BSI 01-2000 7 The members of the test panels should not be

43、 influenced by preconceived ideas. Subpanels of equal size should be formed, each subpanel representing one of the two basic electric shaver systems: rotary type shaver users (ROTA panel); vibratory type shaver users (VIBRA panel). For statistical reasons, the number t of testers in each of the abov

44、e subpanels should be at least12. NOTE 1Whereas some deviation of the test panel composition from the real situation in a country will not have a noticeable influence on the results, it is essential that subpanels have comparable compositions. NOTE 2A subpanel composed of testers who use wetshavers

45、(razor blades) may be considered. 7.2 Test duration and test procedure 7.2.1 Test duration The test period is preceded by a two week introduction period in which the panel testers familiarize themselves with the other shaving system, i.e.rotary type shaver users shave with vibratory type shavers, an

46、d vibratory type shaver users shave with rotary type shavers. The test period for each shaver, which should start within a week of the introduction period, has three shaving days. The first day of each period the tester uses his own shaver(seeAnnex D). NOTE 1If a small number of shaver models are to

47、 be tested, the three days period can be extended to six days. On day7 the testers use their own shaver(seeAnnex D). NOTE 2For panels with a low density of beard hairs or light beards, each test day may be preceded by a non-shaving day (seeAnnex D). 7.2.2 Test procedure Day1 On the first shaving day

48、 each panel tester shaves with his own shaver, which is used as a reference. Questionnaire1(seeAnnex A) is to be completed immediately after shaving, but only in the first two test periods. NOTEQuestionnaire1 is not included in the final analysis. It allows for the test institute to characterize the

49、 user-panels, particularly with respect to the average level of judgement scores. Day2 and Day3 On the second and third shaving days the panel tester shaves with one of the test shavers. On both days he records the shaving time with a stopwatch, and immediately after shaving fills in questionnaire2(seeAnnex A) relating to shaving time, closeness of shave, and skin comfort. NOTEPossible variations in the testing scheme are given in Annex D. 7.2.3 Handling, convenience and storage, etc.