Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) - Part 3: Electrical safety requirements

IEC 63044-3:2017 provides the electrical safety requirements related to the HBES/BACS network in addition to the product safety standards for HBES/BACS devices. It also applies to devices used within an HBES/BACS network for which no specific HBES/BACS product safety standard exists. In addition, it defines safety requirements for the interface of equipment intended to be connected to an HBES/BACS network. It does not apply to interfaces to other networks. NOTE An example of other networks is a dedicated ICT network covered by IEC 62949. This document is applicable to   operator stations and other human–system interface devices,  devices for management functions,  control devices, automation stations and application-specific controllers,  field devices and their interfaces, and  cabling and interconnection of devices  used within a dedicated HBES/BACS network. This document covers the following requirements and compliance criteria:   protection from hazards in the device;  protection from overvoltages on the network;  protection from touch current;  protection from hazards caused by different types of circuit;  protection of the communication wiring from overheating caused by excessive current.  Key words: Home automation, smart homes, smart cities

Allgemeine Anforderungen an die Elektrische Systemtechnik für Heim und Gebäude (ESHG) und an Systeme der Gebäudeautomation (GA) - Teil 3: Anforderungen an die elektrische Sicherheit

Dieser Teil von IEC 63044 gibt die Anforderungen an die elektrische Sicherheit für das ESHG/GA-Netzwerk an, die zusätzlich zu den Produktsicherheitsnormen für ESHG/GA-Geräte gelten. Er gilt auch für Geräte, die innerhalb eines ESHG/GA-Netzwerkes eingesetzt werden und für die keine spezifischen ESHG/GA-Produktsicherheitsnormen vorhanden sind. Darüber hinaus werden Sicherheitsanforderungen an die Schnittstellen von Betriebsmitteln, die für einen Anschluss an ein ESHG/GA-Netzwerk vorgesehen sind, festgelegt. Sie gilt nicht für Schnittstellen zu anderen Netzwerken. ANMERKUNG Ein Beispiel für ein anderes Netzwerk ist ein zweckbestimmtes Netzwerk der Informations- und Kommunikationstechnik nach IEC 62949. Dieses Dokument gilt für - Bedienstationen und andere Geräte mit einer Mensch-System-Schnittstelle, - Geräte mit Managementfunktionen, - Steuergeräte, Automatisierungskonsolen und anwendungsspezifische Steuerungen, - Feldgeräte und deren Schnittstellen sowie - die Verkabelung und Verbindung von Geräten, die innerhalb eines zweckbestimmten ESHG/GA-Netzwerkes eingesetzt werden. Dieses Dokument umfasst die folgenden Anforderungen und Übereinstimmungskriterien: - Schutz gegen Gefährdungen im Gerät; - Schutz gegen Überspannungen am Netzwerk; - Schutz gegen Berührungsstrom; - Schutz gegen Gefährdungen, die durch unterschiedliche Stromkreistypen hervorgerufen werden; - Schutz der Übertragungsverkabelung gegen Überhitzung, die durch zu hohe Ströme hervorgerufen wird.

Systèmes Electroniques pour les Foyers Domestiques et les Bâtiments (HBES) et Systèmes de Gestion Technique du Bâtiment (SGTB) - Partie 3: Exigences de sécurité électrique

L'IEC 63044-3:2017 fournit les exigences de sécurité électrique relatives au réseau HBES/SGTB outre les normes de sécurité de produits applicables aux dispositifs HBES/SGTB. Elle s'applique également aux dispositifs utilisés dans un réseau HBES/SGTB pour lequel il n'existe aucune norme de sécurité de produit HBES/SGTB spécifique. De plus, elle spécifie des exigences de sécurité relatives à l'interface des équipements destinés à être connectés à un réseau HBES/SGTB. Elle ne s'applique pas aux interfaces avec d'autres réseaux. NOTE Un réseau TIC dédié traité par l'IEC 62949 constitue un exemple d'autres réseaux. Le présent document est applicable aux   postes d’opérateur et autres dispositifs d’interface homme-système,  dispositifs pour des fonctions de gestion,  dispositifs de commande, postes d’automatisation et contrôleurs spécifiques à une application,  dispositifs de terrain et leurs interfaces, et  câblage et interconnexion des dispositifs  utilisés dans un réseau HBES/SGTB dédié. Le présent document couvre les exigences et critères de conformité suivants:   protection contre les dangers dans le dispositif;  protection contre les surtensions sur le réseau;  protection contre le courant de contact;  protection contre les dangers provoqués par différents types de circuits;  protection du câblage de communication contre les températures excessives provoquées par un courant trop élevé.  Mots clé: domotique

Splošne zahteve za stanovanjske in stavbne elektronske sisteme (HBES) in sisteme za nadzor in avtomatizacijo stavb (BACS) - 3. del: Zahteve za električno varnost

Ta del standarda IEC 63044 podaja zahteve za električno varnost v povezavi z omrežjem za stanovanjske in stavbne elektronske sisteme ter sisteme za nadzor in avtomatizacijo stavb (HBES/BACS) ter standarde o varnosti izdelka za naprave za stanovanjske in stavbne elektronske sisteme ter sisteme za nadzor in avtomatizacijo stavb.
Uporablja se tudi za naprave, ki se uporabljajo v omrežju za stanovanjske in stavbne elektronske sisteme ter sisteme za nadzor in avtomatizacijo stavb, za katere ne obstajajo posebni standardi za varnost izdelka.
Poleg tega opredeljuje varnostne zahteve za vmesnik opreme, ki se povezuje z omrežjem za stanovanjske in stavbne elektronske sisteme ter sisteme za nadzor in avtomatizacijo stavb. Ne uporablja se za vmesnike do drugih omrežij.
OPOMBA: Primer drugih omrežij je namensko omrežje IKT, ki je zajeto v standardu IEC 62949.
Ta dokument se uporablja za:
– postaje za upravljavce in druge naprave z vmesnikom človek–sistem,
– naprave za funkcije upravljanja,
– krmilne naprave, avtomatizacijske postaje in namenske krmilnike,
– terenske naprave in njihove vmesnike ter
– kablovje in medsebojno povezovanje naprav,
ki se uporabljajo z namenskim omrežjem za stanovanjske in stavbne elektronske sisteme ter sisteme za nadzor in avtomatizacijo stavb
Ta dokument zajema naslednje zahteve in merila skladnosti:
• zaščita pred nevarnostmi v napravi;
• zaščita pred prenapetostmi v omrežju;
• zaščita pred tokom dotika;
• zaščita pred nevarnostmi zaradi uporabe različnih vrst tokokrogov;
• zaščita komunikacijskega ožičenja pred pregretjem, ki ga povzroči prekomeren tok.

General Information

Status
Published
Publication Date
18-Jan-2018
Current Stage
6060 - Document made available
Due Date
19-Jan-2018
Completion Date
19-Jan-2018

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.YDUQRVWGeneral requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) - Part 3: Electrical safety requirements97.120Avtomatske krmilne naprave za domAutomatic controls for household use35.240.67Uporabniške rešitve IT v gradbeništvuIT applications in building and construction industryICS:Ta slovenski standard je istoveten z:EN IEC 63044-3:2018SIST EN IEC 63044-3:2018en01-marec-2018SIST EN IEC 63044-3:2018SLOVENSKI

STANDARDSIST EN 50491-3:20091DGRPHãþD
SIST EN IEC 63044-3:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN IEC 63044-3
January 2018 ICS 29.120.01; 29.120.99
Supersedes
EN 50491-3:2009
English Version

Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) -

Part 3: Electrical safety requirements (IEC 63044-3:2017)

Systèmes Electroniques pour les Foyers Domestiques et les Bâtiments (HBES) et Systèmes de Gestion Technique du Bâtiment (SGTB) - Partie 3: Exigences de sécurité électrique (IEC 63044-3:2017)

Allgemeine Anforderungen an die Elektrische Systemtechnik für Heim und Gebäude (ESHG) und an Systeme der Gebäudeautomation (GA) -

Teil 3: Anforderungen an die elektrische Sicherheit (IEC 63044-3:2017) This European Standard was approved by CENELEC on 2017-03-03. 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, 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 © 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 63044-3:2018 E SIST EN IEC 63044-3:2018

EN IEC 63044-3:2018 2 European foreword The text of document 23/735/CDV, future edition 1 of IEC 63044-3, prepared by IEC/TC 23 "Electrical accessories" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 63044-3:2018.

The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2018-07-19 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2021-01-19

This document supersedes EN 50491-3:2009.

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, and supports essential requirements of EU Directive.

For the relationship with EU Directive see informative Anne• ZZ, which is an integral part of this document.

Endorsement notice The text of the International Standard IEC 63044-3:2017 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 60065 NOTE Harmonized as EN 60065. IEC 60598 Series NOTE Harmonized as EN 60598 Series. IEC 60669-2-1 NOTE Harmonized as EN 60669-2-1. IEC 60669-2-5 NOTE Harmonized as EN 60669-2-5. IEC 60730-1 NOTE Harmonized as EN 60730-1. IEC 60730-2-11 NOTE Harmonized as EN 60730-2-11. IEC 60730-2-14 NOTE Harmonized as EN 60730-2-14. IEC 60950-1:2005 NOTE Harmonized as EN 60950-1:2006 (modified). IEC 60990 NOTE Harmonized as EN 60990. IEC 61140 NOTE Harmonized as EN 61140. IEC 61558 Series NOTE Harmonized as EN 61558 Series. IEC 61800 Series NOTE Harmonized as EN 61800 Series. IEC 62040 Series NOTE Harmonized as EN 62040 Series. IEC 62080 NOTE Harmonized as EN 62080. IEC 62094-1 NOTE Harmonized as EN 62094-1. IEC 62368-1 NOTE Harmonized as EN 62368-1. ISO 16484-2 NOTE Harmonized as EN ISO 16484-2. SIST EN IEC 63044-3:2018

EN IEC 63044-3:2018 3 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 1 When 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 60038 (mod) 2009
IEC standard voltages EN 60038 1) 2011 IEC 60364
(mod) Series
Low-voltage electrical installations HD 60364 Series
IEC 60364-5-52 (mod) -
Low-voltage electrical installations -
Part 5-52:

Selection and erection of electrical equipment - Wiring systems HD 60364-5-52 2011 IEC 60664-1 2007

Insulation coordination for equipment within low-voltage systems -
Part 1: Principles, requirements and tests EN 60664-1 2007 IEC 61180 -

High-voltage test techniques for low-voltage equipment - Definitions, test and procedure requirements, test equipment EN 61180 2016 IEC 62151 2000

Safety of equipment electrically connected to a telecommunication network - -
IEC 62949 -

Particular safety requirements for equipment to be connected to information and communication networks EN 62949 2017 IEC 63044-1 -

Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) -

Part 1: General requirements EN 63044-1 2017

1) The title of EN 60038 is "CENELEC standard voltages". SIST EN IEC 63044-3:2018

EN IEC 63044-3:2018 4 Annex ZZ (informative)
Relationship between this European standard and the safety objectives
of Directive 2014/35/EU [2014 OJ L96] aimed to be covered

This European standard has been prepared under a Commission’s standardisation request relating to harmonised standards in the field of the Low Voltage Directive, M/511, to provide one voluntary means of conforming to safety objectives of 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 [2014 OJ L96].

Once this standard is cited in the Official Journal of the European Union under that Directive, compliance with the normative clauses of this standard given in Table ZZ.1 confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding safety objectives of that Directive, and associated EFTA regulations.

Table ZZ.1 – Correspondence between this European standard and Annex I of Directive 2014/35/EU [2014 OJ L96] Safety objectives of Directive 2014/35/EU Clause(s) / sub-clause(s) of this EN Remarks / Notes 1(a)

1, 2, 3, 4, 5 To be used in conjunction with the appropriate product standard 1(b)

To be used in conjunction with the appropriate product standard 1(c)
See 2 and 3

2(a) 5, 6 To be used in conjunction with the appropriate product standard 2(b) 5, 6.2.4

To be used in conjunction with the appropriate product standard 2(c) 5 To be used in conjunction with the appropriate product standard 2(d) 5, 6

To be used in conjunction with the appropriate product standard 3(a) 5 To be used in conjunction with the appropriate product standard 3(b) 5, 6.3

To be used in conjunction with the appropriate product standard 3(c) 5, 6.2.4
To be used in conjunction with the appropriate product standard

WARNING 1: Presumption of conformity stays valid only as long as a reference to this European standard is maintained in the list published in the Official Journal of the European Union. Users of this standard should consult frequently the latest list published in the Official Journal of the European Union.

WARNING 2: Other Union legislation may be applicable to the product(s) falling within the scope of this standard. SIST EN IEC 63044-3:2018

IEC 63044-3 Edition 1.0 2017-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) –

Part 3: Electrical safety requirements

Systèmes Electroniques pour les Foyers Domestiques et les Bâtiments (HBES) et Systèmes de Gestion Technique du Bâtiment (SGTB) –

Partie 3: Exigences de sécurité électrique

INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE

ICS 29.120.01; 29.120.99
ISBN 978-2-8322-3875-2
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale ®

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. SIST EN IEC 63044-3:2018

– 2 – IEC 63044-3:2017 © IEC 2017 CONTENTS FOREWORD ........................................................................................................................... 3 INTRODUCTION ..................................................................................................................... 5 1 Scope .............................................................................................................................. 6 2 Normative references ...................................................................................................... 6 3 Terms, definitions and abbreviated terms ........................................................................ 7 3.1 Terms and definitions .............................................................................................. 7 3.2 Abbreviated terms ................................................................................................. 10 4 Classification of HBES/BACS network interfaces ........................................................... 10 4.1 General ................................................................................................................. 10 4.2 ICT network .......................................................................................................... 10 4.3 Dedicated network ................................................................................................ 10 5 Safety requirements and compliance criteria.................................................................. 10 6 Requirements ................................................................................................................ 10 6.1 General ................................................................................................................. 10 6.2 Classification requirements of installation areas .................................................... 11 6.2.1 Overvoltage category ..................................................................................... 11 6.2.2 Pollution degree ............................................................................................ 11 6.3 Electrical safety requirements ............................................................................... 11 6.3.1 Protection from hazards in the device ............................................................ 11 6.3.2 Protection from overvoltage on the network and from hazards caused by different types of circuit ................................................................................. 11 6.3.3 Protection from touch current ......................................................................... 13 6.3.4 Protection of the communication wiring from overheating ............................... 15 6.4 Installation ............................................................................................................ 15 Annex A (informative)

List of product standards for electrical safety ..................................... 16 Bibliography .......................................................................................................................... 18

Table 1 – Requirements for connection of devices to a dedicated HBES/BACS network........ 12

SIST EN IEC 63044-3:2018

IEC 63044-3:2017 © IEC 2017 – 3 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________

HOME AND BUILDING ELECTRONIC SYSTEMS (HBES) AND
BUILDING AUTOMATION AND CONTROL SYSTEMS (BACS) –
Part 3: Electrical safety requirements

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 63044-3 has been prepared by IEC technical committee 23: Electrical accessories. A list of all parts in the IEC 63044 series, published under the general title Home and Building Electronic Systems (HBES) and Building Automation Control Systems (BACS), can be found on the IEC website. The text of this standard is based on the following documents: CDV Report on voting 23/735/CDV 23/747/RVC

Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. SIST EN IEC 63044-3:2018

– 4 – IEC 63044-3:2017 © IEC 2017 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. In this publication, the following print types are used: – Requirements proper: in roman type. – Test specifications: in italic type. This document shall be used in conjunction with relevant product safety standards. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website 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.
SIST EN IEC 63044-3:2018

IEC 63044-3:2017 © IEC 2017 – 5 – INTRODUCTION The IEC 63044 series deals with developing and testing Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS). This document deals with electrical safety requirements for HBES/BACS. This document is based on the philosophy that a device considered electrically safe according to an appropriate product safety standard should also remain safe when connected to a network. This document specifies in addition to the specific product standard the electrical safety requirements necessary in order for an HBES/BACS device connected to a network to

remain safe under normal and single-fault conditions of the HBES/BACS network and at the same time under normal and single-fault conditions of one or more HBES/BACS devices connected to the HBES/BACS network. This includes protection from overvoltages on the network, protection from hazards caused by connection of different types of circuit, the limitation of the touch current to a network and protection of the communication wiring from overheating. The HBES/BACS network is any interconnection between HBES/BACS products. The HBES/BACS networks can be either an ICT network with interfaces classified according to IEC 62949 or a dedicated network classified as a mains, ELV, FELV, SELV or PELV circuit.

For HBES/BACS products connected to an ICT network, the requirements in IEC 62949 apply. For HBES/BACS products connected to a dedicated HBES/BACS network, the requirements for the electrical separation between the device and the network circuit are specified (see Table 1). These specifications of the electrical separations follow the principle in the basic safety publications IEC 60664-1 and IEC 61140, together with the installation requirements of IEC 60364. The following compromises are used. – According to the principles of IEC 60664-1, the rated impulse voltage for the separation shall be the higher of the impulse voltage on the network and the rated impulse voltage of the device circuit to be connected to the network.

– The overvoltage categories considered by IEC 60664-1 refer to overvoltages derived directly from the mains through the power supply. – The overvoltages coming from other sources (e.g. capacitive couplings) are not specified in IEC 60664-1. IEC 60664-1 recommends that technical committees specify overvoltage categories or rated impulse voltages as appropriate. For the purposes of this document, the following impulse voltages have been specified. • For networks with galvanic electrical separation from mains (FELV, SELV or PELV circuit), the impulse overvoltage coming from the network side of the separation has been limited to 2,5 kV for fixed installed networks and 1,5 kV for detachable networks. • For ICT networks, particular requirements apply (see 6.3.2.1).

SIST EN IEC 63044-3:2018

– 6 – IEC 63044-3:2017 © IEC 2017 HOME AND BUILDING ELECTRONIC SYSTEMS (HBES) AND

BUILDING AUTOMATION AND CONTROL SYSTEMS (BACS) –
Part 3: Electrical safety requirements

1 Scope This part of IEC 63044 provides the electrical safety requirements related to the HBES/BACS network in addition to the product safety standards for HBES/BACS devices.

It also applies to devices used within an HBES/BACS network for which no specific HBES/BACS product safety standard exists. In addition, it defines safety requirements for the interface of equipment intended to be connected to an HBES/BACS network. It does not apply to interfaces to other networks. NOTE An example of other networks is a dedicated ICT network covered by IEC 62949. This document is applicable to – operator stations and other human–system interface devices, – devices for management functions, – control devices, automation stations and application-specific controllers, – field devices and their interfaces, and – cabling and interconnection of devices used within a dedicated HBES/BACS network. This document covers the following requirements and compliance criteria: • protection from hazards in the device; • protection from overvoltages on the network; • protection from touch current; • protection from hazards caused by different types of circuit; • protection of the communication wiring from overheating caused by excessive current. 2 Normative references 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. IEC 60038:2009, IEC standard voltages IEC 60364 (all parts), Low-voltage electrical installations IEC 60364-5-52, Low-voltage electrical installations – Part 5-52: Selection and erection of electrical equipment – Wiring systems

SIST EN IEC 63044-3:2018

IEC 63044-3:2017 © IEC 2017 – 7 – IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1: Principles, requirements and tests IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1: Principles, requirements and tests IEC 61180, High-voltage test techniques for low-voltage equipment –Definitions, test and procedure requirements, test equipment IEC 62151:2000, Safety of equipment electrically connected to a telecommunication network

IEC 62949, Particular safety requirements for equipment to be connected to information and communication networks1 IEC 63044-1, Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) – Part 1: General requirements 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 63044-1 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp 3.1.1

ICT network information and communication technology network metallically terminated transmission medium consisting of two conductors intended for communication between equipment that may be located in separate buildings, excluding: – the mains system for supply, transmission and distribution of electrical power, if used as a communication transmission medium; – dedicated HBES/BACS networks; – external circuits using ES1 connecting units of audio/video, information and communication technology equipment Note 1 to entry: This may include twisted pairs, and may include circuits which are subjected to transients as indicated in Table 14, ID1 of IEC 62368-1:2014 (assumed to be 1,5 kV). Note 2 to entry: An ICT network may be: – publicly or privately owned; – subject to transient overvoltages due to atmospheric discharges and faults in power distribution systems; – subject to longitudinal (common mode) voltages induced from nearby power lines or electric traction lines. Note 3 to entry: Examples of ICT networks are: – a public switched telephone network; – a public data network; – an Integrated Services Digital Network (ISDN);

1 Under preparation. Stage at the time of publication: IEC/FDIS 62949:2016. SIST EN IEC 63044-3:2018

– 8 – IEC 63044-3:2017 © IEC 2017 – a private network with electrical interface characteristics similar to the above.

Note 4 to entry: For information about circuit voltages and signals which may be present, see Annex B of IEC 60950-1:2005. 3.1.2

electric shock physiological effect resulting from an electric current through a human or animal body [SOURCE: IEC 60050-195:1998, 195-01-04] 3.1.3

basic protection protection against electric shock under fault-free conditions [SOURCE: IEC 60050-195:1998, 195-06-01] 3.1.4

fault protection

protection against electric shock under single-fault conditions [SOURCE: IEC 60050-195:1998, 195-06-02] 3.1.5

mains power supply system with nominal voltage according Table 1 of IEC 60038:2009 3.1.6

mains circuit electrical circuit in which the nominal voltage cannot exceed mains voltage under normal conditions 3.1.7

extra low voltage ELV nominal voltage in the electrical installation of buildings according to the voltage band I specified in IEC 61140 Note 1 to entry: Voltage band I according to IEC 61140 is a voltage below or equal to 50 V AC or 120 V DC. 3.1.8

extra low voltage circuit ELV circuit electrical circuit in which the nominal voltage cannot exceed ELV under normal conditions Note 1 to entry: An ELV circuit is not safe to touch. 3.1.9

functional extra low voltage circuit FELV circuit electrical circuit in which the nominal voltage cannot exceed ELV under normal conditions Note 1 to entry: FELV has simple separation from mains.

Note 2 to entry: A FELV circuit is not safe to touch and may be connected to protective earth. 3.1.10

safety extra low voltage circuit SELV circuit electrical circuit in which the nominal voltage cannot exceed ELV

SIST EN IEC 63044-3:2018

IEC 63044-3:2017 © IEC 2017 – 9 – – under normal conditions, – under single-fault conditions, including earth fault in other circuits Note 1 to entry: SELV has simple separation from PELV and other SELV systems, and earth and protective separation from all other circuits.

Note 2 to entry: Under normal conditions and single-fault conditions in a dry location inside a building, a SELV circuit with a voltage not higher than 25 V AC or 60 V DC is safe to touch.

3.1.11

protective extra low voltage circuit PELV circuit electrical circuit in which the nominal voltage cannot exceed ELV – under normal conditions, – under single-fault conditions, except earth fault in other circuits Note 1 to entry: PELV has protective separation from all circuits other than PELV, SELV or earth. Note 2 to entry: PELV circuit is safe to touch within the same equipotential bonding area inside a building under the following conditions: under normal and single-fault conditions in dry locations and with no large contact area with a voltage not higher than 25 V AC or 60 V DC; otherwise not higher than 12 V AC or 30 V DC. 3.1.12

simple separation

separation between circuits or between a circuit and earth by means of basic insulation 3.1.13

protective separation

separation of one electric circuit from another by means of – double insulation, or

– basic insulation and electrically protective screening (shielding), or – reinforced insulation [SOURCE: IEC 60050-195:1998, 195-06-19] 3.1.14

basic insulation

insulation of hazardous-live parts which provides basic protection [SOURCE: IEC 60050-826:2004, 826-12-14] 3.1.15

double insulation insulation comprising both basic insulation and supplementary insulation [SORCE: IEC 60050-195:1998, 195-06-08] 3.1.16

supplementary insulation independent insulation applied in addition to basic insulation for fault protection [SOURCE: IEC 60050-826:2004, 826-12-15] 3.1.17

electrically protective screening separation of electric circuits or conductors from hazardous-live parts by an electrically protective screen (shield) connected to the protective-equipotential-bonding system and intended to provide protection against electric shock SIST EN IEC 63044-3:2018

– 10 – IEC 63044-3:2017 © IEC 2017 [SOURCE: IEC 60050-195:1998, 195-06-18] 3.1.18

reinforced insulation insulation of hazardous-live-parts which provides a degree of protection against electric shock equivalent to double insulation [SOURCE: IEC 60050-826:2004, 826-12-17] 3.2 Abbreviated terms For the purposes of this document, the abbreviated terms given in IEC 63044-1 and the following apply. ELV

Extra Low Voltage SELV
Safety Extra Low Voltage PELV

Protective Extra Low Voltage 4 Classification of HBES/BACS network interfaces 4.1 General HBES/BACS networks can be based on the following networks. 4.2 ICT network The classification of interfaces for devices to be connected to information and communication technology networks given in

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