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IEC 63044-3 Edition 1.0 2017-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Hom

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. This is a preview - click here to buy the full publication – 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 This is a preview - click here to buy the full publication 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. This is a preview - click here to buy the full publication – 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. This is a preview - click here to buy the full publication 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). This is a preview - click here to buy the full publication – 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 uploads/s1/info-iec63044-3-ed1-0-b.pdf