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64/1422/CDV COMMITTEE DRAFT FOR VOTE (CDV) PROJET DE COMITÉ POUR VOTE (CDV) Pro

64/1422/CDV COMMITTEE DRAFT FOR VOTE (CDV) PROJET DE COMITÉ POUR VOTE (CDV) Project number IEC 60364-4-44, A2, Ed.1 Numéro de projet IEC/TC or SC: TC 64 CEI/CE ou SC: Date of circulation Date de diffusion 2004-10-29 Closing date for voting (Voting mandatory for P-members) Date de clôture du vote (Vote obligatoire pour les membres (P)) 2005-04-01 Titre du CE/SC: Installations électriques et protection contre les chocs électriques TC/SC Title: Electrical installations and protection against electric shock Secretary: Mr. Reinhard Pelta (Germany) Secrétaire: E-mail: reinhard.pelta@siemens.com Also of interest to the following committees Intéresse également les comités suivants Supersedes documents Remplace les documents 64/1381/CD – 64/1421/CC Functions concerned Fonctions concernées Safety Sécurité EMC CEM Environment Environnement Quality assurance Assurance qualité CE DOCUMENT EST TOUJOURS À L'ÉTUDE ET SUSCEPTIBLE DE MODIFICATION. IL NE PEUT SERVIR DE RÉFÉRENCE. LES RÉCIPIENDAIRES DU PRÉSENT DOCUMENT SONT INVITÉS À PRÉSENTER, AVEC LEURS OBSERVATIONS, LA NOTIFICATION DES DROITS DE PROPRIÉTÉ DONT ILS AURAIENT ÉVENTUELLEMENT CONNAISSANCE ET À FOURNIR UNE DOCUMENTATION EXPLICATIVE. THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT SHOULD NOT BE USED FOR REFERENCE PURPOSES. RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. Titre : Amendement 2 à la CEI 60364-4-44, Ed. 1: Installation électriques des bâtiments - Partie 4- 44: Protection contre les perturbations de tension et les perturbations électromagnétiques - Article 444: Dispositions contre les influences électromagnétiques Title : Amendment 2 to IEC 60364-4-44, Ed. 1: Electrical installations of buildings - Part 4-44: Protection for safety - Protection against voltage disturbances and measures against electromagnetic influences - Clause 444: Measures against electromagnetic influences Note d'introduction Introductory note IEC CO Note :The IEC 60364-4-44 A2 Ed. 1.0 project has currently two fragments in the work programme. The latest stage for consolidating fragments is CDV. As f1 of this project is still at the 3CD stage, the f2 has progressed to the CDV stage by itself. Consequently the f2 has now been designated A2 and the f1 will be designated A3. FORM CDV (IEC) 2002-05-14 Copyright © 2004 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without permission in writing from IEC. 60364-4-44 Amend 2 Ed. 1/CDV © IEC – 2 – INTERNATIONAL ELECTROTECHNICAL COMMISSION _________ ELECTRICAL INSTALLATIONS OF BUILDINGS − Part 4-44: Protection for safety − Protection against voltage disturbances and measures against electromagnetic influences Clause 444: Measures against electromagnetic influences Clause 440 : INTRODUCTION , page 9 Substitute the paragraph beginning with: “Introduction IEC 60364-4-44” and ending before the sentence “Clause 445 ...” by the following text: 440 Introduction Part 4-44 of IEC 60364 covers the protection of electrical installations against voltage disturbances and electromagnetic disturbances. The requirements are arranged into three sections as follows: • Clause 442 Protection of low-voltage installations against temporary overvoltages and faults between high-voltage systems and earth • Clause 443 Protection against overvoltages of atmospheric origin or due to switching • Clause 444 Protection against voltage disturbances and electromagnetic disturbances. Part 4-44 (200X) brings together these clauses, which were previously published separately. 440.1 Scope The rules of this part of IEC 60364 are intended to provide requirements for the safety of electrical installations in the event of voltage disturbances and electromagnetic disturbances generated for different specified reasons. The rules of this part do not apply to systems that are wholly or partly under the control of public power supply companies (see scope of IEC 60364-1) although voltage and electromagnetic disturbances may be conducted or induced into electrical installations via these supply systems. Page 13 , clause 440.2 Normative references Delete the following normative references: IEC 60364-5-548 Insert the following normative references: IEC 62305 series: Protection against lightning IEC 60950-1, Information technology equipment – Safety – Part 1: General requirements IEC 61000-6-1: Electromagnetic compatibility (EMC) - Part 6: Generic standards – Section 1: Immunity for residential, commercial and light-industrial environments IEC 61000-6-2: Electromagnetic compatibility (EMC) – Part 6: Generic standards – Section2: Immunity for industrial environments 60364-4-44 Amend 2 Ed. 1/CDV © IEC – 3 – IEC 61000-6-3: Electromagnetic compatibility (EMC) - Part 6 : Generic standards - Section 3 : Emission standard for residential, commercial and light-industrial environments IEC 61000-6-4: Electromagnetic compatibility (EMC) - Part 6: Generic standards - Section 4 : Emission standard for industrial environments IEC 61558-2-1 Safety of power transformers, power supply units and similar products - Part 2: Particular requirements for separating transformers for general use IEC 61558-2-4 Safety of power transformers, power supply units and similar products – Part 2: Particular requirements for isolating transformers for general use IEC 61558-2-6 Safety of power transformers, power supply units and similar products – Part 2: Particular requirements for safety isolating transformers for general use IEC 61558-2-15 Safety of power transformers, power supply units and similar products – Part 2-15: Particular requirements for isolating transformers for the supply of medical locations EN 50310, Application of equipotential bonding and earthing in buildings with information technology equipment EN 50288 series, Multi-element metallic cables used in analogue and digital communication and control 60364-4-44 Amend 2 Ed. 1/CDV © IEC – 4 – Page 49, clause 444 Add the new title: 444 Measures against electromagnetic influences Add a new clause : 444.1 General Clause 444 provides basic recommendations for the mitigation of electromagnetic disturbances. Electromagnetic Interference (EMI) may disturb or damage information technology systems or information technology equipment as well as equipment with electronic components or circuits. Currents due to lightning, switching operations, short-circuits and other electromagnetic phenomena may cause overvoltages and electromagnetic interference. These effects are most severe: • where large metal loops exist; and • where different electrical wiring systems are installed in common routes, e.g. for power supply and for signalling information technology equipment within a building. The value of the induced voltage depends on the rate of rise (di/dt) of the interference current, and on the size of the loop. Power cables carrying large currents with a high rate of rise of current (di/dt) (e.g. the starting current of lifts or currents controlled by rectifiers) can induce overvoltages in cables of information technology systems, which can influence or damage information technology equipment or similar electrical equipment. In or near rooms for medical use, electric or magnetic fields of electrical installations can interfere with medical electrical equipment. This clause provides information for architects of buildings and for designers and installers of electrical installations of buildings on some installation concepts that limit electromagnetic influences. Basic considerations are given here to mitigate such influences that may result in disturbance. 444.2 (void) NOTE This clause is reserved for future input. 60364-4-44 Amend 2 Ed. 1/CDV © IEC – 5 – Substitute all sub-clauses of 444 beginning with 444.3 by the following text : 444.3 Definitions See Part 1 of IEC 60364 for basic definitions. For the purpose of this standard the following definitions apply: 444.3.1 bonding network ,BN set of interconnected conductive structures that provides an “electromagnetic shield” for electronic systems at frequencies from direct current (DC) to low radio frequency (RF). [3.2.2 of ETS 300 253:1995] NOTE The term “electromagnetic shield” denotes any structure used to divert, block or impede the passage of electromagnetic energy. In general, a BN does not need to be connected to earth but BNs considered in this standard are connected to earth. 444.3.2 bonding ring conductor, BRC an earthing bus conductor in the form of a closed ring. [3.1.3 of EN50310: 2000] NOTE Normally the bonding ring conductor, as part of the bonding network, has multiple connections to the CBN that improves its performance. 444.3.3 common equipotential bonding system common bonding network, CBN equipotential bonding system providing both protective-equipotential-bonding and functional- equipotential-bonding. [IEV 195-02-25] 444.3.4 equipotential bonding provision of electric connections between conductive parts, intended to achieve equipotentiality. [IEV 195-01-10] 444.3.5 earth-electrode network ground-electrode network (US) part of an earthing arrangement comprising only the earth electrodes and their interconnections. [IEV 195-02-21] 444.3.6 meshed bonding network, MESH-BN bonding network in which all associated equipment frames, racks and cabinets and usually the DC power return conductor, are bonded together as well as at multiple points to the CBN and may have the form of a mesh. [3.2.2 of ETS 300 253:1995] NOTE The MESH-BN augments the CBN. 444.3.7 by-pass equipotential bonding conductor/ parallel earthing conductor, PEC earthing conductor connected in parallel with the screens of signal and/ or data cables in order to limit the current flowing through the screens. 60364-4-44 Amend 2 Ed. 1/CDV © IEC – 6 – 444.4 Mitigation of Electromagnetic Interference (EMI) Consideration shall be given by the designer and installer of the electrical installation to the measures described below for reducing the electric and magnetic influences on electrical equipment. Only electrical equipment, uploads/s3/ 64-1422e-cdv 1 .pdf