SIST EN 60204-31:2014

Safety of machinery - Electrical equipment of machines - Part 31: Particular safety and EMC requirements for sewing machines, units and systems

This part of IEC 60204 applies to the application of electrical and electronic equipment to sewing machines, units and systems, designed specifically for professional use in the sewing industry. The equipment covered by this part commences at the point of connection of the supply to the electrical equipment of the machine (see 5.1). This part is applicable to the electrical equipment or parts of the electrical equipment which operate with nominal supply voltages not exceeding 1 000 V for alternating current and not exceeding 1 500 V for direct current, and with nominal frequencies not exceeding 200 Hz. It does not cover all the requirements (e.g. guarding, interlocking, control) that are necessary to safeguard persons from hazards other than electrical hazards and which are specified in other standards. This part applies to sewing units and systems which are installed in dry and well-kept clean locations and which process dry sewing material, as in the clothing industry. Where sewing units and systems are used in other than dry and well-kept clean locations, more stringent measures can be necessary, which need to be agreed between manufacturer and customer. The noise emission of electrical and electronic equipment for sewing machines is not considered to be a relevant hazard. Therefore this standard does not contain any specific requirements on noise.

Sicherheit von Maschinen - Elektrische Ausrüstung von Maschinen - Teil 31: Besondere Sicherheits- und EMV-Anforderungen an Nähmaschinen, Näheinheiten und Nähanlagen

Sécurité des machines - Equipement électrique des machines - Partie 31: Exigences particulières de sécurité et de CEM pour machines à coudre, unités et systèmes de couture

La CEI 60204-31:2013 est applicable à l'équipement aussi bien électrique qu'électronique des machines à coudre, des unités et systèmes de couture conçus spécialement pour un usage professionnel dans l'industrie de la couture. Elle est applicable à l'équipement électrique ou à des parties de l'équipement électrique fonctionnant sous une tension nominale ne dépassant pas 1 000 V en courant alternatif ou 1 500 V en courant continu, et pour des fréquences nominales ne dépassant pas 200 Hz. Cette quatrième édition annule et remplace la troisième édition, parue en 2001 dont elle constitue une révision technique. Cette édition inclut les modifications techniques suivantes:  - Alignement des références normatives;  - Alignement des titres et sous-titres à la CEI 60204-1;  - La révision de l'Annexe AA pour aligner cette annexe avec les normes CEI correspondantes.

Varnost strojev - Električna oprema strojev - 31. del: Posebne zahteve za varnost in EMC za šivalne stroje, enote in sisteme

General Information

• Status: Published
• Publication Date: 09-Mar-2014
• ICS: 13.110 - Safety of machinery
• ICS: 61.080 - Sewing machines and other equipment for the clothing industry
• Technical Committee: MOV - Measuring equipment for electromagnetic quantities
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 17-Dec-2013
• Due Date: 21-Feb-2014
• Completion Date: 10-Mar-2014
• Directive: 2004/108/EU - DIRECTIVE 2004/108/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Directive: 2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
• Ref Project: EN 60204-31:2013 - Safety of machinery - Electrical equipment of machines - Part 31: Particular safety and EMC requirements for sewing machines, units and systems

Relations

• Replaces: SIST EN 60204-31:1999 - Safety of machinery - Electrical equipment of machines -- Part 31: Particular safety and EMC requirements for sewing machines, units and systems
• Effective Date: 29-Jan-2023
• Revised: SIST EN 60204-31:1999 - Safety of machinery - Electrical equipment of machines -- Part 31: Particular safety and EMC requirements for sewing machines, units and systems
• Effective Date: 06-May-2014

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60204-31:2014
01-april-2014
9DUQRVWVWURMHY(OHNWULþQDRSUHPDVWURMHYGHO3RVHEQH]DKWHYH]DYDUQRVW
LQ(0&]DãLYDOQHVWURMHHQRWHLQVLVWHPH
Safety of machinery - Electrical equipment of machines - Part 31: Particular safety and
EMC requirements for sewing machines, units and systems
Sicherheit von Maschinen - Elektrische Ausrüstung von Maschinen - Teil 31: Besondere
Sicherheits- und EMV-Anforderungen an Nähmaschinen, Näheinheiten und Nähanlagen
Sécurité des machines - Equipement électrique des machines - Partie 31: Exigences
particulières de sécurité et de CEM pour machines à coudre, unités et systèmes de
couture
Ta slovenski standard je istoveten z: EN 60204-31:2013
ICS:
13.110 Varnost strojev Safety of machinery
61.080 âLYDOQLVWURMLLQGUXJDRSUHPD Sewing machines and other
]DREODþLOQRLQGXVWULMR equipment for the clothing
industry
SIST EN 60204-31:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 60204-31:2014

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SIST EN 60204-31:2014

EUROPEAN STANDARD
EN 60204-31

NORME EUROPÉENNE
October 2013
EUROPÄISCHE NORM

ICS 13.110; 61.080 Supersedes EN 60204-31:1998


English version


Safety of machinery -
Electrical equipment of machines -
Part 31: Particular safety and EMC requirements for sewing machines,
units and systems
(IEC 60204-31:2013)


Sécurité des machines -  Sicherheit von Maschinen -
Equipement électrique des machines - Elektrische Ausrüstung von Maschinen -
Partie 31: Exigences particulières de Teil 31: Besondere Sicherheits- und EMV-
sécurité et de CEM pour machines à Anforderungen an Nähmaschinen,
coudre, unités et systèmes de couture Näheinheiten und Nähanlagen
(CEI 60204-31:2013) (IEC 60204-31:2013)





This European Standard was approved by CENELEC on 2013-05-28. 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, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60204-31:2013 E

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SIST EN 60204-31:2014
EN 60204-31:2013 - 2 -

Foreword
The text of document 44/685/FDIS, future edition 4 of IEC 60204-31, prepared by IEC/TC 44 "Safety of
machinery - Electrotechnical aspects" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 60204-31:2013.
The following dates are fixed:
(dop) 2014-04-04
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2016-05-28
• latest date by which the national
standards conflicting with the

document have to be withdrawn

This document supersedes EN 60204-31:1998.
EN 60204-31:2013 includes the following significant technical changes with respect to
EN 60204-31:1998:
a) Alignment of the normative references;
b) Alignment of titles and subtitles to the EN 60204-1;
c) Revision of Annex AA to align this annex with the relevant European standards.
This European Standard is to be used in conjunction with EN 60204-1:2006 + A1:2009.
This part supplements or modifies the corresponding clauses in EN 60204-1 so as to convert that
publication into the European standard dealing with requirements for the electrical equipment of sewing
machines, units and systems.
Where a particular subclause of Part 1 is not mentioned in this part, that subclause applies as far as is
reasonable. Where this part states "addition", "modification" or "replacement" the relevant text in Part 1 is
adapted accordingly.
The annex which is additional to those in Part 1 is lettered AA.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directives see informative Annexes ZZA and ZZB, which are integral parts of
this document.

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SIST EN 60204-31:2014
- 3 - EN 60204-31:2013
Endorsement notice
The text of the International Standard IEC 60204-31:2013 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60335-2-28 NOTE  Harmonised as EN 60335-2-28.
IEC 61000-6-2:2005 NOTE  Harmonised as EN 61000-6-2:2005 (not modified).

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SIST EN 60204-31:2014
EN 60204-31:2013 - 4 -
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Addition to Annex ZA of EN 60204-1:2006:

Publication Year Title EN/HD Year

IEC 60204-1 (mod) 2005 Safety of machinery - Electrical equipment of EN 60204-1 2006
+ A1 2008 machines - + corr. February 2010
Part 1: General requirements + A1 2009


IEC 60364-4-41 - Low-voltage electrical installations - HD 60364-4-41 -
Part 4-41: Protection for safety - Protection
against electric shock


IEC 60664-1 2007 Insulation coordination for equipment within EN 60664-1 2007
low-voltage systems -
Part 1: Principles, requirements and tests


IEC 60721-3-3 - Classification of environmental conditions - EN 60721-3-3 -
Part 3: Classification of groups of
environmental parameters and their
severities -
Section 3: Stationary use at weatherprotected
locations


IEC 60947-1 2007 Low-voltage switchgear and controlgear - EN 60947-1 2007
+ A1 2010 Part 1: General rules + A1 2011


IEC 61000-3-2 - Electromagnetic compatibility (EMC) - EN 61000-3-2 -
Part 3-2: Limits - Limits for harmonic current
emissions (equipment input current ≤ 16 A per
phase)


IEC 61000-3-3 - Electromagnetic compatibility (EMC) - EN 61000-3-3 -
Part 3-3: Limits - Limitation of voltage
changes, voltage fluctuations and flicker in
public low-voltage supply systems, for
equipment with rated current ≤ 16 A per phase
and not subject to conditional connection


IEC 61000-4-2 - Electromagnetic compatibility (EMC) - EN 61000-4-2 -
Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity
test


IEC 61000-4-3 - Electromagnetic compatibility (EMC) - EN 61000-4-3 -
Part 4-3: Testing and measurement
techniques - Radiated, radio-frequency,
electromagnetic field immunity test


IEC 61000-4-4 - Electromagnetic compatibility (EMC) - EN 61000-4-4 -
Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst
immunity test

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SIST EN 60204-31:2014
- 5 - EN 60204-31:2013
Publication Year Title EN/HD Year
IEC 61000-4-5 2005 Electromagnetic compatibility (EMC) - EN 61000-4-5 2006
+ corr. October 2009 Part 4-5: Testing and measurement
techniques - Surge immunity test


IEC 61000-4-6 - Electromagnetic compatibility (EMC) - EN 61000-4-6 -
Part 4-6: Testing and measurement
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields


IEC 61000-4-11 - Electromagnetic compatibility (EMC) - EN 61000-4-11 -
Part 4-11: Testing and measurement
techniques - Voltage dips, short interruptions
and voltage variations immunity tests


IEC 61058-1 - Switches for appliances - EN 61058-1 -
Part 1: General requirements


IEC 61558-1 - Safety of power transformers, power supplies, EN 61558-1 -
reactors and similar products -
Part 1: General requirements and tests


CISPR 11 (mod) 2009 Industrial, scientific and medical equipment - EN 55011 2009
+ A1 2010 Radio-frequency disturbance characteristics - + A1 2010
Limits and methods of measurement


ENV 50204 - Radiated electromagnetic field from digital - -
radio telephones - Immunity test

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SIST EN 60204-31:2014
EN 60204-31:2013 - 6 -
Annex ZZA
(informative)

Coverage of Essential Requirements of EU Directive (2006/42/EC)
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and within its scope the standard covers only the
following essential requirement out of those given in annex I of the EC Directive 2006/42/EC:

− 1.5.1

Compliance with this standard provides one means of conformity with the specified essential
requirements of the Directive concerned.

WARNING: Other requirements and other EU Directives may be applicable to the products falling within
the scope of this standard.

Annex ZZB
(informative)

Coverage of Essential Requirements of EU Directive (2004/108/EC)
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and within its scope the standard covers all
relevant essential requirements as given in Annex I of the EC Directive 2004/108/EC.
Compliance with this standard provides one means of conformity with the specified essential
requirements of the Directive concerned.
WARNING: Other requirements and other EC Directives may be applicable to the products falling within
the scope of this standard.

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SIST EN 60204-31:2014



IEC 60204-31

®


Edition 4.0 2013-04




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Safety of machinery – Electrical equipment of machines –

Part 31: Particular safety and EMC requirements for sewing machines, units and

systems




Sécurité des machines – Équipement électrique des machines –

Partie 31: Exigences particulières de sécurité et de CEM pour machines à


coudre, unités et systèmes de couture













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX T


ICS 13.110; 61.080 ISBN 978-2-83220-749-9



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: 9 ----------------------

SIST EN 60204-31:2014
– 2 – 60204-31 © IEC:2013
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 General requirements . 7
5 Incoming supply conductor terminations and devices for disconnecting and

switching off . 7
6 Protection against electric shock . 8
7 Protection of equipment . 8
8 Equipotential bonding . 9
9 Control circuits and control functions . 9
10 Operator interface and machine mounted control devices . 10
11 Controlgear: location, mounting and enclosures . 11
12 Conductors and cables . 12
13 Wiring practices . 12
14 Electric motors and associated equipment . 12
15 Accessories and lighting . 13
16 Marking, warning signs and reference designations . 13
17 Technical documentation . 13
18 Verification . 14
Annex AA (normative) Electromagnetic compatibility requirements . 15
Bibliography . 22

Figure AA.1 – Ports . 15
Figure AA.2 – Standard sewing unit for EMC tests . 17


Table AA.1 – Emission – Radiated (enclosure) and conducted (AC mains) . 18
Table AA.2 – Immunity – Enclosure port . 19
Table AA.3 – Immunity – Ports for signal lines and data buses . 20
Table AA.4 – Immunity – AC input and AC output power ports . 21

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SIST EN 60204-31:2014
60204-31 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

SAFETY OF MACHINERY –
ELECTRICAL EQUIPMENT OF MACHINES –

Part 31: Particular safety and EMC requirements
for sewing machines, units and systems

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.
International Standard IEC 60204-31 has been prepared by IEC technical committee 44:
Safety of machinery – Electrotechnical aspects.
This fourth edition cancels and replaces the third edition, published in 2001. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Alignment of the normative references;
b) Alignment of titles and subtitles to the IEC 60204-1;
c) Revision of Annex AA to align this annex with the relevant IEC standards.

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SIST EN 60204-31:2014
– 4 – 60204-31 © IEC:2013
The text of this standard is based on the following documents:
FDIS Report on voting
44/685/FDIS 44/687/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This International Standard is to be used in conjunction with IEC 60204-1:2005 and its
Amendment 1:2008.
This part supplements or modifies the corresponding clauses in IEC 60204-1 so as to convert
that publication into the IEC standard dealing with requirements for the electrical equipment of
sewing machines, units and systems.
Where a particular subclause of Part 1 is not mentioned in this part, that subclause applies as
far as is reasonable. Where this part states "addition", "modification" or "replacement" the
relevant text in Part 1 is adapted accordingly.
The Annex which is additional to those in Part 1 is lettered AA.
A list of all the parts in the IEC 60204 series, published under the general title Safety of
machinery – Electrical equipment of machines, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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SIST EN 60204-31:2014
60204-31 © IEC:2013 – 5 –
SAFETY OF MACHINERY –
ELECTRICAL EQUIPMENT OF MACHINES –

Part 31: Particular safety and EMC requirements
for sewing machines, units and systems



1 Scope
This clause of Part 1 is replaced by:
This part of IEC 60204 applies to the application of electrical and electronic equipment to
sewing machines, units and systems, designed specifically for professional use in the sewing
industry.
NOTE The requirements for sewing machines for household and similar use can be found in IEC 60335-2-28.
The equipment covered by this part commences at the point of connection of the supply to the
electrical equipment of the machine (see 5.1). This part is applicable to the electrical
equipment or parts of the electrical equipment which operate with nominal supply voltages not
exceeding 1 000 V for alternating current and not exceeding 1 500 V for direct current, and
with nominal frequencies not exceeding 200 Hz.
It does not cover all the requirements (e.g. guarding, interlocking, control) that are necessary
to safeguard persons from hazards other than electrical hazards and which are specified in
other standards.
This part applies to sewing units and systems which are installed in dry and well-kept clean
locations and which process dry sewing material, as in the clothing industry. Where sewing
units and systems are used in other than dry and well-kept clean locations, more stringent
measures can be necessary, which need to be agreed between manufacturer and customer.
The noise emission of electrical and electronic equipment for sewing machines is not
considered to be a relevant hazard. Therefore this standard does not contain any specific
requirements on noise.
2 Normative references
This clause of Part 1 is applicable except as follows:
Additional references:
IEC 60204-1:2005, Safety of machinery – Electrical equipment of machines – Part 1: General
requirements
Amendment 1:2008
IEC 60364-4-41, Low-voltage electrical installations – Part 4-41: Protection for safety –
Protection against electric shock
IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests

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SIST EN 60204-31:2014
– 6 – 60204-31 © IEC:2013
IEC 60721-3-3, Classification of environmental conditions – Part 3: Classification of groups of
environmental parameters and their severities – Section 3: Stationary use at
weatherprotected locations
IEC 60947-1:2007, Low-voltage switchgear and controlgear – Part 1: General rules
Amendment 1:2010
IEC 61000-3-2, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for harmonic
current emissions (equipment input current ≤ 16 A per phase)
IEC 61000-3-3, Electromagnetic compatibility (EMC) – Part 3-3: Limits – Limitation of voltage
changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment
with rated current ≤ 16 A per phase and not subject to conditional connection
IEC 61000-4-2, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement
techniques – Electrostatic discharge immunity test
IEC 61000-4-3, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measurement
techniques – Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-4, Electromagnetic compatibility (EMC) – Part 4-4: Testing and measurement
techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5:2005, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
IEC 61000-4-6, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measurement
techniques – Immunity to conducted disturbances, induced by radio-frequency fields
IEC 61000-4-11, Electromagnetic compatibility (EMC) – Part 4-11: Testing and measurement
techniques – Voltage dips, short interruptions and voltage variations immunity tests
IEC 61058-1, Switches for appliances – Part 1: General requirements
IEC 61558-1, Safety of power transformers, power supplies, reactors and similar products –
Part 1: General requirements and tests
CISPR 11:2009, Industrial, scientific and medical equipment – Radio-frequency disturbance
characteristics – Limits and methods of measurement
Amendment 1:2010
ENV 50204, Radiated electromagnetic field from digital radio telephones – Immunity test
3 Terms and definitions
This clause of Part 1 is applicable except as follows:
Additional definitions:
3.101
sewing machine
machine designed to produce one or more stitch types with one or more sewing threads
Note 1 to entry: Previously, the term “sewing machine head” was used instead of “sewing machine”.
Note 2 to entry: Stitch types are defined in ISO 4915.

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SIST EN 60204-31:2014
60204-31 © IEC:2013 – 7 –
Note 3 to entry: Seam types are defined in ISO 4916.
Note 4 to entry: In producing a seam, the machine can perform one or more sewing functions.
3.102
sewing machine stand
item, for example designed as a table, on which the sewing machine is arranged to enable
optimum operation
3.103
sewing machine drive
equipment that drives a sewing machine, such as an electric motor, which is speed-controlled
by electrical and/or mechanical means with or without a positioning device and with or without
control of machine functions
3.104
sewing unit
equipment consisting of at least a sewing machine, a sewing machine stand and a sewing
machine drive
Note 1 to entry: One or several devices incorporated in and/or attached to the sewing machine or sewing unit, for
example for sewing, cutting, feeding, etc. the sewing material, as well as the sewing machine itself, are controlled
by the operator or automatically.
3.105
sewing system
equipment consisting of at least two sewing units or parts of them, which are functionally
interlinked
4 General requirements
This clause of Part 1 is applicable except as follows:
4.4.2 Electromagnetic compatibility (EMC)
Replacement:
Replace this subclause with Annex AA.
4.4.4 Humidity
Modification:
Instead of the first paragraph, the following applies:
The electrical equipment shall be capable of operating in the intended manner in the humidity
conditions covered by class 3K3 as specified in IEC 60721-3-3.
5 Incoming supply conductor terminations and devices for disconnecting
and switching off
This clause of Part 1 is applicable except as follows:
5.1 Incoming supply conductor terminations
Modification:

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SIST EN 60204-31:2014
– 8 – 60204-31 © IEC:2013
Add after the first sentence of the first paragraph:
Each sewing unit shall have only one incoming supply connection.
Each sewing system consisting of at least two sewing units that are not interlinked by means
of control systems may have its own incoming supply connection for each sewing unit;
however, if a failure of one sewing unit can cause a hazard, the sewing system shall have
only one incoming supply connection.
5.3 Supply disconnecting (isolating) device
5.3.1 General
Addition:
When sewing units are interconnected by means of control systems to form a sewing system,
only one supply disconnecting device shall be provided.
5.3.2 Type
Addition to item d):
On sewing units and systems which are started and stopped by actuating a hold-to-run control
device (e.g. pedal), an isolating switch according to IEC 60947-3 for utilization categories
AC-3 or DC-3, or a incorporated switch according to IEC 61058-1, shall be used.
5.3.4 Operating means
Addition:
For seated positions the operating handle of the ON/OFF switch shall be mounted between
0,5 m and 1,5 m above the servicing level.
6 Protection against electric shock
This clause of Part 1 is applicable except as follows:
6.1 General
Addition:
This can also be achieved by the application of SELV according to IEC 60364-4-41.
7 Protection of equipment
This clause of Part 1 is applicable except as follows:
7.5 Protection against supply interruption or volt
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