EN IEC 62368-3:2020

Audio/video, information and communication technology equipment - Part 3: Safety aspects for DC power transfer through communication cables and ports

IEC 62368-3:2017 applies to equipment intended to supply and receive operating power through communication cables or ports. It covers particular requirements for circuits that are designed to transfer DC power from a power sourcing equipment (PSE) to a powered device (PD). The power transfer uses voltages at ES1 or ES2 or in very specific cases voltage levels at ES3. Any cable provided with a connector defined by an industry standard that permits DC power transfer between equipment is considered a communication cable even if communication does not take place. For example, a USB cable can be used just to recharge a portable device battery. This International Standard is to be used in conjunction with IEC 62368-1:2014. It has the status of a group safety publication in accordance with IEC Guide 104. The subclauses of IEC 62368-1 apply as far as reasonable. Where safety aspects are similar to those of IEC 62368-1, the relevant clause or subclause of IEC 62368-1 is given for reference in a note in the relevant subclause. Where a requirement in IEC 62368-3 refers to a requirement or criterion of IEC 62368-1, a specific reference to IEC 62368-1 is made. This group safety publication is primarily intended to be used as a product safety standard for the products mentioned in the scope, but shall also be used by technical committees in the preparation of standards for products similar to those mentioned in the scope of this standard, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51. Keywords: Communication, Safety, Cables, DC Power Transfer,

Einrichtungen für Audio/Video, Informations- und Kommunikationstechnik – Teil 3: Sicherheitsaspekte für Gleichstrom-Leistungsübertragung über Kommunikations-Kabel und Anschlüssen

Équipements des technologies de l’audio/vidéo, de l’information et de la communication - Partie 3: Aspects liés à la sécurité relatifs au transfert de puissance en courant continu au moyen de câbles et d’accès de communication

IEC 62368-3:2017 s’applique aux équipements conçus pour fournir et recevoir de l’énergie de fonctionnement au moyen de câbles et d’accès de communication. Elle couvre les exigences particulières relatives aux circuits conçus pour transférer de la puissance en courant continu d’un équipement source d’alimentation (PSE - power sourcing equipment) à un dispositif alimenté (PD - powered device). Le transfert de puissance utilise des tensions à ES1 ou ES2 ou, dans des cas très spécifiques, des niveaux de tensions à ES3. Tout câble équipé d’un connecteur défini par une norme industrielle permettant le transfert de puissance en courant continu entre des équipements est considéré comme étant un câble de communication, même en l’absence de communication. Par exemple, un câble USB peut être utilisé uniquement pour recharger une batterie de dispositif portable. Cette Norme Internationale doit être utilisée conjointement avec l'IEC IEC 62368-1:2014. Elle a le statut d'une publication groupée de sécurité conformément au Guide IEC 104. Les paragraphes de l’IEC 62368-1 s’appliquent dans la mesure du possible. Lorsque les aspects liés à la sécurité sont similaires à ceux décrits dans l’IEC 62368-1, l’article ou le paragraphe pertinent de l’IEC 62368-1 est indiqué à titre de référence dans une note qui figure dans le paragraphe concerné. Lorsqu’une exigence de l’IEC 62368-3 fait référence à une exigence ou un critère de l’IEC 62368-1, une référence particulière est faite à l’IEC 62368-1. La présente publication groupée de sécurité est avant tout destinée à être utilisée en tant que norme en matière de sécurité des produits pour les produits cités dans le domaine d’application, mais elle doit également être utilisée par les comités d’études dans le cadre de l’élaboration de normes pour des produits similaires à ceux cités dans le domaine d’application de la présente norme, conformément aux principes établis dans le Guide IEC 104 et le Guide ISO/IEC 51. Mots clés: communication, sécurité, câbles, transfert de puissance en courant continu

Oprema za avdio/video, informacijsko in komunikacijsko tehnologijo - 3. del: Vidiki varnosti za prenos enosmerne moči skozi komunikacijske kable ali porte (IEC 62368-3:2017)

General Information

• Status: Published
• Publication Date: 26-Mar-2020
• Withdrawal Date: 19-Dec-2020
• ICS: 33.160.01 - Audio, video and audiovisual systems in general
• ICS: 35.020 - Information technology (IT) in general
• Technical Committee: CLC/TC 108X - Safety of electronic equipment within the fields of Audio/Video, Information Technology and Communication Technology
• Drafting Committee: IEC/TC 108 - IEC_TC_108
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 27-Mar-2020
• Completion Date: 27-Mar-2020
• Directive: 2014/35/EU - Directive 2014/35/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 the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive: 2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Mandate: M/536 - [C(2015)536] Standardisation request as regards radio equipment in support of Directive 2014/53/EU
• Ref Project: SIST EN IEC 62368-3:2020 - Audio/video, information and communication technology equipment - Part 3: Safety aspects for DC power transfer through communication cables and ports

Relations

• Replaces: EN 60950-21:2003 - Information technology equipment - Safety - Part 21: Remote power feeding
• Effective Date: 25-Feb-2020
• Amended By: FprEN 62368-3:2017/prAA:2018 - Audio/video, information and communication technology equipment - Part 3: Safety aspects for DC power transfer through communication cables and ports
• Effective Date: 30-Jan-2018

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2020
Nadomešča:
SIST EN 60950-21:2004
Oprema za avdio/video, informacijsko in komunikacijsko tehnologijo - 3. del: Vidiki
varnosti za prenos enosmerne moči skozi komunikacijske kable ali porte (IEC
62368-3:2017)
Audio/video, information and communication technology equipment - Part 3: Safety
aspects for DC power transfer through communication cables and
ports
Einrichtungen für Audio/Video, Informations- und Kommunikationstechnik - Sicherheit -
Teil 3: Gleichstrom-Leistungsübertragung über Kommunikationskabel der
Informationstechnik (IEC 62368-3:2017)
Équipements des technologies de l'audio/vidéo, de l'information et de la communication -
Partie 3: Aspects liés à la sécurité relatifs au transfert de puissance en courant continu
au moyen de câbles et d'accès de communication (IEC 62368-3:2017)
Ta slovenski standard je istoveten z: EN IEC 62368-3:2020
ICS:
33.160.01 Avdio, video in avdiovizualni Audio, video and audiovisual
sistemi na splošno systems in general
35.020 Informacijska tehnika in Information technology (IT) in
tehnologija na splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62368-3

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2020
ICS 33.160.01; 35.020 Supersedes EN 60950-21:2003 and all of its
amendments and corrigenda (if any)
English Version
Audio/video, information and communication technology
equipment - Part 3: Safety aspects for DC power transfer
through communication cables and ports
(IEC 62368-3:2017)
Équipements des technologies de l'audio/vidéo, de Einrichtungen für Audio/Video, Informations- und
l'information et de la communication - Partie 3: Aspects liés Kommunikationstechnik - Sicherheit - Teil 3: Gleichstrom-
à la sécurité relatifs au transfert de puissance en courant Leistungsübertragung über Kommunikationskabel der
continu au moyen de câbles et d'accès de communication Informationstechnik
(IEC 62368-3:2017) (IEC 62368-3:2017)
This European Standard was approved by CENELEC on 2018-01-11. 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,
Turkey 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
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62368-3:2020 E

European foreword
The text of document 108/695/FDIS, future edition 1 of IEC 62368-3, prepared by IEC/TC 108 "Safety
of electronic equipment within the field of audio/video, information technology and communication
technology" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-09-27
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2020-12-20
document have to be withdrawn
This document supersedes EN 60950-21:2003 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.
This document has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association
.
Endorsement notice
The text of the International Standard IEC 62368-3:2017 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:
IEC 62949:2017 NOTE Harmonized as EN 62949:2017 (not modified)

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 62368-1 (mod) 2014 Audio/video, information and EN 62368-1 2014
communication technology equipment -
Part 1: Safety requirements
- -  + AC 2015
- -  + A11 2017
- -  EN 62368-1:2014/
AC:2017-03
IEC Guide 104 -  The preparation of safety publications and - -
the use of basic safety publications and
group safety publications
ISO/IEC Guide 51 -  Safety aspects - Guidelines for their - -
inclusion in standards
IEC 62368-3 ®
Edition 1.0 2017-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Audio/video, information and communication technology equipment –

Part 3: Safety aspects for DC power transfer through communication cables and

ports
Équipements des technologies de l’audio/vidéo, de l’information et de la

communication –
Partie 3: Aspects liés à la sécurité relatifs au transfert de puissance en courant

continu au moyen de câbles et d’accès de communication

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.160.01; 35.020 ISBN 978-2-8322-5131-7

– 2 – IEC 62368-3:2017 © IEC 2017
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 8
4 General requirements . 9
5 Power transfer using ES1 or ES2 voltages . 9
5.1 General requirements . 9
5.2 Electrical-caused injury, electrical sources and safeguards . 9
5.3 Electrical-caused fire, power sources and safeguards . 9
5.3.1 DC power transfer interconnection to building wiring . 9
5.3.2 DC power transfer interconnection to other equipment . 10
5.4 Safeguards to protect against a single fault condition in the PSE . 10
5.4.1 Requirement for the PSE . 10
5.4.2 Requirement for the PD . 11
6 Power transfer using RFT . 11
6.1 General requirements . 11
6.2 Connection to ICT networks . 11
6.3 Electrically caused injury . 11
6.3.1 Classification and limits of electrical energy sources . 11
6.3.2 Accessibility to electrical energy sources and safeguards . 14
6.3.3 Safeguards . 15
6.3.4 Installation instructions . 16
6.4 Electrically caused fire . 17
6.4.1 Classification of RFT power sources . 17
6.4.2 Fire protection requirements . 17
Annex A (informative) Remote power feeding . 19
A.1 Overview. 19
A.2 Operational considerations . 19
A.3 Safety considerations . 20
A.4 Principle of remote power feeding . 20
A.4.1 RFT-C circuits . 20
A.4.2 RFT-V circuits . 22
A.5 Safety aspects . 22
A.5.1 Steady-state body current . 22
A.5.2 Body resistance . 23
A.5.3 Charged capacitance . 23
Annex B (informative) Rationale for 5.4 . 24
Bibliography . 25

Figure 1 – Maximum current after a single fault. 12
Figure 2 – Maximum voltages permitted after a single fault . 14
Figure 3 – Limits for capacitance values of RFT circuits of the total system . 17
Figure A.1 – Example of a remote power feeding RFT-C system . 21

IEC 62368-3:2017 © IEC 2017 – 3 –
Figure A.2 – Example of a remote power feeding RFT-C system with repeater . 21
Figure A.3 – Example of a remote power feeding RFT-V system . 22

Table 1 – RFT-V circuits, power and current limitations . 18

– 4 – IEC 62368-3:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUDIO/VIDEO, INFORMATION AND COMMUNICATION
TECHNOLOGY EQUIPMENT –
Part 3: Safety aspects for DC power transfer
through communication cables and ports

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 St
...