SIST EN IEC 61254:2026

SLOVENSKI STANDARD
01-junij-2026
Nadomešča:
SIST EN 61254:1998
Električni brivniki za domačo uporabo - Ocena izkušenj in zadovoljstva
uporabnikov (IEC 61254:2026)
Electric shavers for household use - Evaluation of experience and user satisfaction (IEC
61254:2026)
Elektrische Rasierapparate für den Hausgebrauch - Bewertung der Erfahrungen und der
Nutzerzufriedenheit (IEC 61254:2026)
Rasoirs électriques à usage domestique - évaluation de l'expérience et de la satisfaction
des utilisateurs (IEC 61254:2026)
Ta slovenski standard je istoveten z: EN IEC 61254:2026
ICS:
97.170 Oprema za nego telesa Body care equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61254

NORME EUROPÉENNE
EUROPÄISCHE NORM April 2026
ICS 97.170 Supersedes EN 61254:1994
English Version
Electric shavers for household use - Evaluation of user
experience and user satisfaction
(IEC 61254:2026)
Rasoirs électriques à usage domestique - Évaluation de Elektrische Rasierapparate für den Hausgebrauch -
l'expérience et de la satisfaction des utilisateurs Bewertung der Erfahrungen und der Nutzerzufriedenheit
(IEC 61254:2026) (IEC 61254:2026)
This European Standard was approved by CENELEC on 2026-04-22. 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 standards may be obtained on application to the CEN-CENELEC
Management Centre 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 notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61254:2026 E
European foreword
The text of document 59L/290/CDV, future edition 2 of IEC 61254, prepared by SC 59L "Small
household appliances" of IEC/TC 59 "Performance of household and similar electrical appliances" was
submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61254:2026.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-04-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-04-30
document have to be withdrawn
This document supersedes EN 61254:1994 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61254:2026 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
ISO 9241-210:2019 NOTE Approved as EN ISO 9241-210:2019 (not modified)

IEC 61254 ®
Edition 2.0 2026-03
INTERNATIONAL
STANDARD
Electric shavers for household use - Evaluation of user experience and user
satisfaction
ICS 97.170  ISBN 978-2-8327-1142-2

IEC 61254:2026-03(en)
IEC 61254:2026 © IEC 2026
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 List of evaluations . 6
5 Evaluation of user experience (3.5) for comparing different electric shavers . 6
5.1 Composition of the test panels . 6
5.2 Test duration and test procedure . 7
5.2.1 Test duration . 7
5.2.2 Test procedure . 7
5.2.3 Handling, convenience and storage, etc. . 7
5.3 Distribution of electric shavers . 7
5.4 Statistical analysis . 8
5.5 Final ranking . 9
6 Evaluation of user satisfaction (3.6) for a particular electric shaver . 9
6.1 User satisfaction (3.6) with regard to performances and features of a
particular electric shaver . 9
6.1.1 General instruction . 9
6.1.2 Evaluation panels . 9
6.1.3 Evaluation attributes. 9
6.1.4 Evaluation mode . 10
6.1.5 Point allocation . 10
6.2 User satisfaction (3.6) with regard to overall aspects of a particular electric
shaver . 11
6.2.1 General instruction . 11
6.2.2 Evaluation panels . 11
6.2.3 Evaluation attributes. 11
6.2.4 Evaluation mode . 11
6.2.5 Point allocation . 11
Annex A (normative) Questionnaires . 14
Annex B (informative) Instructions for the testers . 24
Annex C (informative) Distribution scheme . 25
Annex D (informative) Possible variations in the testing scheme . 28
Bibliography . 29

Figure 1 – An example for result of nine electric shavers, X to X . 9
1 9
Table 1 – Sources of variation and associated number of degrees of freedom . 8
Table 2 – The weighting relating to different attributes with regard to performances and
features of shavers . 10
Table 3 – The weighting relating to different attributes with regard to overall aspect of
electric shaver . 12
Table C.1 – An example of distribution scheme for 9 kinds of electric shaver . 25

IEC 61254:2026 © IEC 2026
Table C.2 – An example of distribution scheme for 9 kinds of electric shaver,
particularly with the number of testers being twice the number of shavers . 26
Table C.3 – Introduction period and first week of the distribution scheme . 26
Table D.1 – Possible variations in the testing scheme . 28

IEC 61254:2026 © IEC 2026
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Electric shavers for household use -
Evaluation of user experience and user satisfaction

FOREWORD
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 electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
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preparation is entrusted to 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 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 technical 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
Publications 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 national 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 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 independent 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 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 the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 61254 has been prepared by subcommittee 59L: Small household appliances, of IEC
technical committee 59: Performance of household and similar electrical appliances. It is an
International Standard.
This second edition cancels and replaces the first edition published in 1993. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) change in standard title and scope (Title and Clause 1);
b) addition of the definition of user experience and user satisfaction (3.5, 3.6);
c) modification of the list of evaluations (Clause 4);
d) introduction of evaluation of user satisfaction for a particular electric shaver (Clause 6);
IEC 61254:2026 © IEC 2026
e) removal of testing measurement in objective way, such as measuring methods for
dimensions, operation time and gravimetric analysis of the difference in closeness of shave;
f) modification of questionnaires in Annex A.
The text of this International Standard is based on the following documents:
Draft Report on voting
59L/290/CDV 59L/302/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
Words in bold in the text are defined in Clause 3.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
IEC 61254:2026 © IEC 2026
1 Scope
This document applies to men's electric shavers (3.1) and their trimmers (3.4) for household
use.
This document deals with the methods for evaluating user experience (3.5) and user
satisfaction (3.6), in a subjective way, for men's electric shavers (3.1) and their trimmers
(3.4) with a rated voltage not greater than 250 V.
This document does not specify safety or performance requirements.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
– IEC Electropedia: available at https://www.electropedia.org/
– ISO Online browsing platform: available at https://www.iso.org/obp
3.1
electric shaver
appliance that uses electric energy to drive shaving head for shaving
3.2
rotary electric shaver
electric shaver (3.1) with round shaving head(s) and usually rotating cutters
3.3
vibratory electric shaver
electric shaver (3.1) with linear shaving head(s) and usually vibrating cutters
3.4
trimmer
accessory that is incorporated into the electric shaver (3.1) and used to groom particular facial
hair
Note 1 to entry: Examples of particular facial hair are moustache, beard or side whiskers, etc.
3.5
user experience
person's perceptions and responses resulting from the use of a product
[SOURCE: ISO 9241-210:2019, 3.15, modified - In the definition, "user" has been changed to
"person", "that result from the use and/or anticipated use of a system, product or service" has
been changed to "resulting from the use of a product" and Notes to entry have been deleted.]
IEC 61254:2026 © IEC 2026
3.6
user satisfaction
extent to which the user's physical, cognitive and emotional responses that result from the use
of a system, product or service meet the user's needs and expectations
Note 1 to entry: Satisfaction includes the extent to which the user experience that results from actual use meets
the user's needs and expectations.
Note 2 to entry: Anticipated use can influence satisfaction with actual use.
[SOURCE: ISO 9241-210:2019, 3.10, modified – "user" has been added to the term.]
4 List of evaluations
Depending on the appliance, the following evaluations shall be carried out, as appropriate:
4.1 User experience (3.5) for comparing different electric shavers.
4.2 User satisfaction (3.6) for a particular electric shaver:
– user satisfaction (3.6) with regard to performances and features of a particular electric
shaver (3.1);
– user satisfaction (3.6) with regard to overall aspects of a particular electric shaver (3.1).
5 Evaluation of user experience (3.5) for comparing different electric shavers
5.1 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 performed, with 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.
Each panel tester shall have no pains or injuries on the face and have no allergic skin.
Each panel tester shall be the potential user and have a positive attitude towards the functions
and not be influenced by preconceived ideas.
The test panel is divided into subpanels with equal size. Each subpanel represents one of the
two basic electric shaver (3.1) systems:
– rotary electric shaver (3.2) testers;
– vibratory electric shaver (3.3) testers.
For statistical reasons, the number of testers in each of the above subpanels should be at
least 12.
NOTE 1 Whereas 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 2 Test can be conducted when there's only one type of electric shaver (3.1). For example, evaluation among
three rotary electric shavers (3.2) with different brands or models or three vibratory electric shavers (3.3) with
different brands or models.
NOTE 3 A subpanel composed of testers who use wet shavers (razor blades) can be considered when necessary.
IEC 61254:2026 © IEC 2026
5.2 Test duration and test procedure
5.2.1 Test duration
The test duration depends on the number of types/modes of electric shavers (3.1) and testers
but generally includes an introduction period and a test period.
The test period is preceded by a two week introduction period in which the testers familiarize
themselves with the other shaving system, i.e. rotary electric shaver (3.2) users shave with
vibratory electric shavers (3.3), and vibratory electric shaver (3.3) users shave with rotary
electric shavers (3.2).
The test period for each electric shaver (3.1), which should start within a week after the
introduction period, has three shaving days. On the first day of each test period, the tester uses
his own shaver (see scheme A in Annex D).
If a small number of electric shaver (3.1) models are to be tested, the test period of three days
for each electric shaver (3.1) can be extended to six days. On day 7, the tester uses his own
shaver (see scheme B in Annex D).
For testers with a low density of beard hairs or light beards, each test day may be preceded by
a non-shaving day (see scheme C in Annex D).
5.2.2 Test procedure
Day 1:
On the first shaving day, each tester shaves with his own shaver, which is used as a reference.
Questionnaire 1 in Annex A shall be completed immediately after shaving.
NOTE 1 Questionnaire 1 is not included in the final analysis. It allows for the test institute to characterize the test
panels, particularly with respect to the average level of judgment scores.
Day 2 and day 3:
On the second and third shaving days, the tester shaves with one of the test shavers. On both
days, the tester shall record the shaving time with a stopwatch, and immediately after shaving
fills in Questionnaire 2 in Annex A relating to shaving time, cleanness, and skin irritation.
NOTE 2 Possible variations in the testing scheme are given in Annex D.
5.2.3 Handling, convenience and storage, etc.
For each test period, the handling, convenience, storage, etc. of the tested shaver are assessed
and Questionnaire 3 in Annex A shall be completed on the last day of the test period.
The test is continued until each tester has tested each shaver once.
Instructions for the testers are given in Annex B.
5.3 Distribution of electric shavers
The electric shavers (3.1) are distributed so that each tester:
– shaves with each shaver in turn;
– uses each shaver an equal number of times.
IEC 61254:2026 © IEC 2026
The following should be observed as far as possible:
– For each tester, the sequence of distribution of the electric shavers (3.1) should be
different.
NOTE 1 This procedure avoids possible interaction between shavers.
– The first electric shaver (3.1) to be tested shall not be the same as that used in the
introduction period.
– The number of electric shavers (3.1) in each model should be as small as possible.
NOTE 2 The distribution scheme for electric shaver (3.1) is illustrated by the example shown in Annex C.
5.4 Statistical analysis
A ten-point scale, shown in Annex A, is used and the results are analysed by using an analysis
of variance. The following sources of variation are included:
– variation due to subpanels p;
– variation due to testers t (within subpanels p);
– variation due to types of electric shaver (3.1) n;
– variation due to the interaction p × n;
– variation due to the interaction t(p) × n;
– variation due to experimental error (residual variation).
As an example, Table 1 shows the sources of variation and the associated numbers of degrees
of freedom (df), for the case: p = 2, t(p) = 18, n = 9, k (number of the repetitions) = 2.
Table 1 – Sources of variation and associated number of degrees of freedom
Source of variation df
Grand mean 1
Subpanels p 1
Testers (within panels) t(p) 34
Types of electric shaver (3.1) n 8
Interaction p × n 8
Interaction t(p) × n 272
Residual 324
The homogeneity of the types of electric shavers (3.1) can be assessed with an F-test. Given
a significant difference between types, it is possible to establish clusters of types.
IEC 61254:2026 © IEC 2026
5.5 Final ranking
If the statistical analysis shows a significant interaction between subpanels and types of
electric shavers (3.1) (p × n), results for each subpanel shall be presented separately.
For each result, for example, cleanness on the cheek, chin, and under the nose (see Annex A),
the analysis leads to a result which can be shown schematically. An example for nine electric
shavers (3.1), X to X is given below (see Figure 1):
1 9
to X
Figure 1 – An example for result of nine electric shavers, X
1 9
The horizontal bars below the characters X , X , etc., represent the results of the analysis of
5 1
variance. Types of electric shaver (3.1) X and X form the first statistical group, showing that
5 1
the difference between X and X does not differ significantly from zero. The second statistical
5 1
group is formed by electric shavers (3.1) X , X , X and X , the third by X , X and X and the
1 4 3 2 2 7 6
fourth by X , X and X .
6 8 9
Differences in average scores should only be identified if the relevant types of electric shavers
(3.1) belong to different statistical groups.
6 Evaluation of user satisfaction (3.6) for a particular electric shaver
6.1 User satisfaction (3.6) with regard to performances and features of a particular
electric shaver
6.1.1 General instruction
The purpose of evaluation of user satisfaction (3.6) with regard to performances and features
of shavers is to help the public know the degree of satisfaction of consumers towards a
particular electric shaver (3.1).
6.1.2 Evaluation panels
Each evaluator shall be an adult male who has/had used the electric shaver (3.1) and have
positive attitudes towards its brand and functions.
For statistical reasons, the number of evaluators in the evaluation panel shall be at least 30.
6.1.3 Evaluation attributes
The electric shaver (3.1) shall be evaluated for user satisfaction (3.6) with regard to
performances and features on the following attributes:
a) three attributes with regard to shaving performance are cleanness, shaving time, and skin
irritation;
b) nine attributes with regard to features of shavers are noise, vibration, shaved-beard
collection, shaver-head cleaning, trimmer (3.4), working time, comfort of handling,
operation of functional switch, and instructions for use.
IEC 61254:2026 © IEC 2026
6.1.4 Evaluation mode
The evaluation panel shall be asked to answer Questionnaire 4 in Annex A.
6.1.5 Point allocation
6.1.5.1 Each attribute shall be allocated for 10 points. The points from all attributes shall be
added together to produce a total score. An electric shaver (3.1) can achieve a maximum score
of 120 points from the sum of points when evaluated against the required 12 attributes.
6.1.5.2 The points from each attribute are awarded by the points from evaluator multiplying
the weighting of the attribute, expressed by the following Formula (1):
P = P × w
(1)
a 0
where
P are the points from each attribute;
a
P are the points that each evaluator gave for the particular attribute;
w is the weighting relating to the particular attribute.
6.1.5.3 The weighting relating to different attributes is shown in Table 2.
Table 2 – The weighting relating to different attributes with regard to performances and
features of shavers
Aspect Attributes Weighting (w)
%
Cleanness 30
Shaving performance (60 %) Shaving time 15
Skin irritation 15
Noise 4
Vibration 3
Hair-stubbles collection 3
Shaver-head cleaning 5
Features of shaver (40 %） Trimmer (3.4) 5
Working time 10
Comfort of handling 5
Operation of functional switch 3
Instructions for use 2
6.1.5.4 The total eva
...