Household and similar electrical appliances - Safety - Part 2-28: Particular requirements for sewing machines

IEC 60335-2-28:2021 is available as IEC 60335-2-28:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60335-2-28:2021 deals with the safety of electric sewing machines for household and similar use, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances, including direct current (DC) supplied appliances and battery-operated appliances.
Overlock machines and electrical sets are within the scope of this standard.
Appliances not intended for normal household use, but that nevertheless can be a source of danger to the public, such as sewing machines intended to be used by laymen in shops and in light industry, are within the scope of this standard.
As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account
- persons (including children) whose physical, sensory or mental capabilities; or lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction;
- children playing with the appliance.
Attention is drawn to the fact that
- for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements can be necessary;
- in many countries additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities.
This standard does not apply to
- appliances intended exclusively for industrial purposes;
- appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).
This fifth edition cancels and replaces the fourth edition published in 2002 and Amendment 1:2008. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the text has been aligned with IEC 60335-1:2020;
b) some notes have been converted to normative text (Clause 1, 11.7, 22.14, 22.101);
c) clarification of requirements for battery-operated appliances (Clause 1, 3.1.9, 11.7, B.11.1);
d) introduction of limits on the temperature rise of external accessible surfaces (Clause 11);
e) application of test probe 19 has been introduced (8.1.1, 20.2).
This Part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments unless that edition precludes it; in that case, the latest edition that does not preclude it is used. It was established on the basis of the sixth edition (2020) of that standard.

Appareils électrodomestiques et analogues - Sécurité - Partie 2-28: Exigences particulières pour les machines à coudre

IEC 60335-2-28:2021 est disponible sous forme de IEC 60335-2-28:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 60335-2-28:2021 traite de la sécurité des machines à coudre électriques destinées à un usage domestique et analogue, dont la tension assignée est inférieure ou égale à 250 V pour les appareils monophasés et à 480 V pour les autres appareils, y compris les appareils alimentés en courant continu et les appareils alimentés par batteries.
Les surjeteuses-raseuses et les ensembles électriques relèvent du domaine d'application de la présente norme.
Les appareils non destinés à un usage domestique normal, mais qui peuvent néanmoins constituer une source de danger pour le public, tels que les machines à coudre destinées à être utilisées par des usagers non avertis dans des magasins et chez des artisans, sont compris dans le domaine d'application de la présente norme.
Dans la mesure du possible, la présente norme traite des dangers courants que présentent les appareils et auxquels sont exposés tous les individus situés à l'intérieur et autour de l'habitation. Cependant, cette norme ne tient pas compte en général:
- des personnes (y compris des enfants) dont les capacités physiques, sensorielles ou mentales; ou le manque d'expérience et de connaissance les empêchent d'utiliser l'appareil en toute sécurité sans surveillance ou instruction;
- de l'utilisation de l'appareil comme jouet par des enfants.
L'attention est attirée sur le fait que:
- pour les appareils destinés à être utilisés dans des véhicules ou à bord de navires ou d'avions, des exigences supplémentaires peuvent être nécessaires;
- dans de nombreux pays, des exigences supplémentaires sont spécifiées par les organismes nationaux de la santé, par les organismes nationaux responsables de la protection des travailleurs et par des organismes similaires.
La présente norme ne s'applique pas
- aux appareils prévus exclusivement pour des usages industriels;
- aux appareils destinés à être utilisés dans des locaux qui présentent des conditions particulières, telles que la présence d'une atmosphère corrosive ou explosive (poussière, vapeur ou gaz).
Cette cinquième édition annule et remplace la quatrième édition parue en 2002 et l'Amendement 1:2008. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) alignement du texte sur l'IEC 60335-1:2020;
b) conversion en texte normatif de certaines notes (Article 1, 11.7, 22.14, 22.101);
c) clarification des exigences relatives aux appareils alimentés par batteries (Article 1, 3.1.9, 11.7, B.11.1);
d) introduction des limites d'échauffement des surfaces accessibles extérieures (Article 11);
e) introduction de l'application du calibre d'essai 19 (8.1.1, 20.2).
La présente Partie 2 doit être utilisée conjointement avec la dernière édition de l'IEC 60335-1 et ses amendements, sauf si cette édition l'exclut. Dans ce cas, la dernière édition qui n'exclut pas la présente Partie 2 est utilisée. Elle a été établie sur la base de la sixième édition (2020) de cette norme.

General Information

Status
Published
Publication Date
16-Nov-2021
Current Stage
PPUB - Publication issued
Completion Date
17-Nov-2021
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IEC 60335-2-28
Edition 5.0 2021-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-28: Particular requirements for sewing machines
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-28: Exigences particulières pour les machines à coudre
IEC 60335-2-28:2021-11(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60335-2-28
Edition 5.0 2021-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-28: Particular requirements for sewing machines
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-28: Exigences particulières pour les machines à coudre
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120; 61.080; 97.180 ISBN 978-2-8322-1044-5

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60335-2-28:2021 © IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 9

4 General requirement ........................................................................................................ 9

5 General conditions for the tests ....................................................................................... 9

6 Classification ................................................................................................................... 9

7 Marking and instructions ................................................................................................ 10

8 Protection against access to live parts ........................................................................... 11

9 Starting of motor-operated appliances ........................................................................... 11

10 Power input and current ................................................................................................. 11

11 Heating .......................................................................................................................... 11

12 Charging of metal-ion batteries ...................................................................................... 12

13 Leakage current and electric strength at operating temperature ..................................... 12

14 Transient overvoltages .................................................................................................. 12

15 Moisture resistance ....................................................................................................... 12

16 Leakage current and electric strength ............................................................................ 12

17 Overload protection of transformers and associated circuits .......................................... 12

18 Endurance ..................................................................................................................... 13

19 Abnormal operation ....................................................................................................... 13

20 Stability and mechanical hazards ................................................................................... 13

21 Mechanical strength ...................................................................................................... 13

22 Construction .................................................................................................................. 13

23 Internal wiring ................................................................................................................ 14

24 Components .................................................................................................................. 14

25 Supply connection and external flexible cords ............................................................... 14

26 Terminals for external conductors .................................................................................. 14

27 Provision for earthing .................................................................................................... 14

28 Screws and connections ................................................................................................ 14

29 Clearances, creepage distances and solid insulation ..................................................... 14

30 Resistance to heat and fire ............................................................................................ 14

31 Resistance to rusting ..................................................................................................... 15

32 Radiation, toxicity and similar hazards ........................................................................... 15

Annexes ............................................................................................................................... 16

Annex B (normative) Battery-operated appliances, separable batteries and detachable

batteries for battery-operated appliances .............................................................................. 17

Bibliography .......................................................................................................................... 18

Figure 101 – Probe for measuring surface temperatures ....................................................... 15

---------------------- Page: 4 ----------------------
IEC 60335-2-28:2021 © IEC 2021 – 3 –

Table 101 – Maximum temperature rises for specified external surfaces under normal

operating conditions .............................................................................................................. 12

---------------------- Page: 5 ----------------------
– 4 – IEC 60335-2-28:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-28: Particular requirements for sewing machines
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,

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 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) 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 for identifying any or all such patent rights.

IEC 60335-2-28 has been prepared by IEC technical committee 61: Safety of household and

similar electrical appliances. It is an International Standard.
This fifth edition cancels and replaces the fourth edition published in 2002 and
Amendment 1:2008. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) the text has been aligned with IEC 60335-1:2020;

b) some notes have been converted to normative text (Clause 1, 11.7, 22.14, 22.101);

c) clarification of requirements for battery-operated appliances (Clause 1, 3.1.9, 11.7, B.11.1);

d) introduction of limits on the temperature rise of external accessible surfaces (Clause 11);

e) application of test probe 19 has been introduced (8.1.1, 20.2).
---------------------- Page: 6 ----------------------
IEC 60335-2-28:2021 © IEC 2021 – 5 –
The text of this International Standard is based on the following documents:
Draft Report on voting
61/6380/FDIS 61/6430/RVD

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/standardsdev/publications.

A list of all parts in the IEC 60335 series, published under the general title Household and

similar electrical appliances – Safety, can be found on the IEC website.

This Part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its

amendments unless that edition precludes it; in that case, the latest edition that does not

preclude it is used. It was established on the basis of the sixth edition (2020) of that standard.

NOTE 1 When "Part 1" is mentioned in this standard, it refers to IEC 60335-1.

This Part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to convert

that publication into the IEC standard: Particular requirements for sewing machines.

When a particular subclause of Part 1 is not mentioned in this Part 2, that subclause applies as

far as is reasonable. When this standard states "addition", "modification" or "replacement", the

relevant text in Part 1 is to be adapted accordingly.
NOTE 2 The following numbering system is used:

– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;

– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including

those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
notes: in small roman type.

Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the

associated noun are also in bold.

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,
• replaced by a revised edition, or
• amended.
---------------------- Page: 7 ----------------------
– 6 – IEC 60335-2-28:2021 © IEC 2021

NOTE 4 The attention of National Committees is drawn to the fact that equipment manufacturers and testing

organizations may need a transitional period following publication of a new, amended or revised IEC publication in

which to make products in accordance with the new requirements and to equip themselves for conducting new or

revised tests.

It is the recommendation of the committee that the content of this publication be adopted for implementation nationally

not earlier than 12 months or later than 36 months from the date of publication.
---------------------- Page: 8 ----------------------
IEC 60335-2-28:2021 © IEC 2021 – 7 –
INTRODUCTION

It has been assumed in the drafting of this International Standard that the execution of its

provisions is entrusted to appropriately qualified and experienced persons.

Guidance documents concerning the application of the safety requirements for appliances can

be accessed via TC 61 supporting documents on the IEC website
https://www.iec.ch/tc61/supportingdocuments

This information is given for the convenience of users of this International Standard and does

not constitute a replacement for the normative text in this standard.

This standard recognizes the internationally accepted level of protection against hazards such

as electrical, mechanical, thermal, fire and radiation of appliances when operated as in normal

use taking into account the manufacturer's instructions. It also covers abnormal situations that

can be expected in practice and takes into account the way in which electromagnetic

phenomena can affect the safe operation of appliances.

This standard takes into account the requirements of IEC 60364 as far as possible so that there

is compatibility with the wiring rules when the appliance is connected to the supply mains.

However, national wiring rules may differ.

If an appliance within the scope of this standard also incorporates functions that are covered

by another Part 2 of IEC 60335, the relevant Part 2 is applied to each function separately, as

far as is reasonable. If applicable, the influence of one function on the other is taken into

account.

When a Part 2 standard does not include additional requirements to cover hazards dealt with

in Part 1, Part 1 applies.

NOTE 1 This means that the technical committees responsible for the Part 2 standards have determined that it is

not necessary to specify particular requirements for the appliance in question over and above the general

requirements.

This standard is a product family standard dealing with the safety of appliances and takes

precedence over horizontal and generic standards covering the same subject.

NOTE 2 Horizontal publications, basic safety publications and group safety publications covering a hazard are not

applicable since they have been taken into consideration when developing the general and particular requirements

for the IEC 60335 series of standards.

An appliance that complies with the text of this standard will not necessarily be considered to

comply with the safety principles of the standard if, when examined and tested, it is found to

have other features that impair the level of safety covered by these requirements.

An appliance employing materials or having forms of construction differing from those detailed

in the requirements of this standard may be examined and tested according to the intent of the

requirements and, if found to be substantially equivalent, may be considered to comply with the

standard.
NOTE 3 Standards dealing with non-safety aspects of household appliances are:
– IEC standards published by TC 59 concerning methods of measuring performance;

– CISPR 11, CISPR 14-1 and relevant IEC 61000-3 series standards concerning electromagnetic emissions;

– CISPR 14-2 concerning electromagnetic immunity;
– IEC standards published by TC 111 concerning environmental matters.
---------------------- Page: 9 ----------------------
– 8 – IEC 60335-2-28:2021 © IEC 2021
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-28: Particular requirements for sewing machines
1 Scope
This clause of Part 1 is replaced by the following.

This part of IEC 60335 deals with the safety of electric sewing machines for household and

similar use, their rated voltage being not more than 250 V for single-phase appliances and

480 V for other appliances, including direct current (DC) supplied appliances and battery-

operated appliances.
Overlock machines and electrical sets are within the scope of this standard.

Appliances not intended for normal household use, but that nevertheless can be a source of

danger to the public, such as sewing machines intended to be used by laymen in shops and in

light industry, are within the scope of this standard.

As far as is practicable, this standard deals with the common hazards presented by appliances

that are encountered by all persons in and around the home. However, in general, it does not

take into account
– persons (including children) whose
• physical, sensory or mental capabilities; or
• lack of experience and knowledge

prevents them from using the appliance safely without supervision or instruction;

– children playing with the appliance.
Attention is drawn to the fact that

– for appliances intended to be used in vehicles or on board ships or aircraft, additional

requirements can be necessary;

– in many countries additional requirements are specified by the national health authorities,

the national authorities responsible for the protection of labour and similar authorities.

This standard does not apply to
– appliances intended exclusively for industrial purposes;

– appliances intended to be used in locations where special conditions prevail, such as the

presence of a corrosive or explosive atmosphere (dust, vapour or gas).
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:

IEC 60320-2-1, Appliance couplers for household and similar general purposes – Part 2-1:

Sewing machine couplers
---------------------- Page: 10 ----------------------
IEC 60335-2-28:2021 © IEC 2021 – 9 –
IEC 60584-1, Thermocouples – Part 1: EMF specifications and tolerances
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1 Definitions relating to physical characteristics
3.1.9 Addition:
operation of the appliance under the following conditions:

The appliance is operated without thread and fabric, the presser foot being in its lifted position

and the spool-winding device disengaged. The stitch length and zigzag stitch width are adjusted

so that the highest load is obtained.

Note 1 to entry: The highest load is normally obtained with the stitch length and zigzag stitch width adjusted to their

maximum values.
3.5 Definitions relating to types of appliances
3.5.101
electrical set

assembly comprising a motor and its control for mounting on a non-electric sewing machine

Note 1 to entry: An electrical set may incorporate a lamp.
3.5.102
overlock machine

sewing machine having more than one needle and incorporating a means for trimming the

material
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.

5.101 Electrical sets are mounted on the sewing machine specified in the instructions that

gives the most unfavourable results.
5.102 Sewing machines used on a table are tested as portable appliances.
6 Classification
This clause of Part 1 is applicable.
---------------------- Page: 11 ----------------------
– 10 – IEC 60335-2-28:2021 © IEC 2021
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:

Appliances shall be marked on or near the lampholder with the maximum rated wattage of

replaceable lamps as follows:
lamp max….W
The word "lamp" may be replaced by symbol IEC 60417-5012 (2002-10).

The voltage rating of a lamp shall be marked if it is lower than the rated voltage of the

appliance.
7.10 Addition:
The requirement does not apply to switches controlling lamps.
7.11 Addition:
The requirement does not apply to motor controls.
7.12 Addition:

The instructions shall state the rated wattage of any lamp and its voltage rating if it is lower

than the rated voltage of the appliance.
The instructions shall state the substance of the following:
– switch off or unplug the appliance when leaving it unattended; and
– unplug the appliance before carrying out maintenance or replacing lamps.
7.12.1 Addition:

The instructions for electrical sets shall indicate the sewing machines for which they are

intended and shall state how they are to be installed.
7.101 Electrical sets shall be marked with:
– rated voltage in volts;
– rated current in amperes;

– name, trade mark or identification mark of the manufacturer or responsible vendor; and

– model or type reference.
Compliance is checked by inspection.
---------------------- Page: 12 ----------------------
IEC 60335-2-28:2021 © IEC 2021 – 11 –
8 Protection against access to live parts
This clause of Part 1 is applicable except as follows.
8.1.1 Addition:

For foot pedals and other parts of appliances that are situated on the floor in normal use, in

addition to the use of test probe 18, test probe 19 of IEC 61032 is also applied as specified for

test probe 18.
9 Starting of motor-operated appliances
This clause of Part 1 is not applicable.
10 Power input and current
This clause of Part 1 is applicable.
11 Heating
This clause of Part 1 is applicable except as follows.
11.3 Addition:

Where the external accessible surfaces are suitably flat and access permits, then the test

probe of Figure 101 is used to measure the temperature rises of external accessible surfaces

specified in Table 101. The probe is applied with a force of 4 N ± 1 N to the surface in such a

way that the best possible contact between the probe and the surface is ensured. The

measurement is performed after a contact period of 30 s.

The probe may be held in place using a laboratory stand clamp or similar device. Any measuring

instrument giving the same results as the probe may be used.
11.7 Modification:

The appliance is operated until steady conditions are established by actuating the motor control

in cycles. Each cycle comprises
– 2,5 s operation from start to full speed;
– 5,0 s operation at full speed;
– 7,5 s at rest.

For appliances incorporating integral batteries or separable batteries not disconnected from

the appliance for charging purposes:

– the battery that has been fully discharged is charged for 1 h, while the appliance is

operated as specified, if allowed by the construction of the appliance;

– the battery that has been fully discharged is charged, for a duration of 24 h or until it is

fully charged whichever is shorter, without the battery-operated appliance performing its

intended function.
11.8 Modification:

During the test, the temperature rises are monitored continuously and shall not exceed the

values shown in Table 3 and Table 101.
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– 12 – IEC 60335-2-28:2021 © IEC 2021
Addition:

The temperature rise of the actuating member of a motor control shall not exceed the value

specified in Table 3 for surfaces of handles, knobs, grips and similar parts which

...

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