This guide has been written for electrical Engineers who have to design, select electrical equipment, install these equipment and, inspect or maintain lowvoltage electrical installations in compliance with international Standards of the International Electrotechnical Commission (IEC).“Which technical solution will guarantee that all relevant safety rules are met?” This question has been a permanent guideline for the elaboration of this document.An international Standard such as the IEC 60364 series “Low voltage Electrical Installations” specifi es extensively the rules to comply with to ensure safety and correct operational functioning of all types of electrical installations. As the Standard must be extensive, and has to be applicable to all types of equipment and the technical solutions in use worldwide, the text of the IEC rules is complex, and not presented in a readytouse order. The Standard cannot therefore be considered as a working handbook, but only as a reference document.The aim of the present guide is to provide a clear, practical and stepbystep explanation for the complete study of an electrical installation, according to IEC 60364 series and other relevant IEC Standards. The fi rst chapter (A) presents the methodology to be used, and refers to all chapters of the guide according to the different steps of the study. We all hope that you, the reader, will fi nd this handbook genuinely helpful.Schneider Electric S.A.
Electrical installation guide 2013 According to IEC international standards 06/2013 EIGED306001EN ART.822690 Make the most of your energy 35, rue Joseph Monier CS30323 F-92506 Rueil-Malmaison Cedex RCS Nanterre 954 503 439 Capital social 896 313 776 € www.schneider-electric.com As standards, specifi cations and designs change from time to time, please ask for confi rmation of the information given in this pubication. Schneider Electric Industries SAS Electrical installation guide According to IEC international standards 2013 This document has been printed on ecological paper This technical guide is the result of a collective effort. Illustrations and production: AXESS - Valence -France Printing: Edition: 2013 Price: 40 € ISBN: 978.2.9531643.3.6 N° dépôt légal: 1er semestre 2008 © Schneider Electric All rights reserved in all countries The Electrical Installation Guide is a single document covering the techniques and standards related to low-voltage electrical installations. It is intended for electrical professionals in companies, design offi ces, inspection organisations, etc. This Technical Guide is aimed at professional users and is only intended to provide them guidelines for the defi nition of an industrial, tertiary or domestic electrical installation. Information and guidelines contained in this Guide are provided AS IS. Schneider Electric makes no warranty of any kind, whether express or implied, such as but not limited to the warranties of merchantability and fi tness for a particular purpose, nor assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this Guide, nor represents that its use would not infringe privately owned rights. The purpose of this guide is to facilitate the implementation of International installation standards for designers & contractors, but in all cases the original text of International or local standards in force shall prevail. This new edition has been published to take into account changes in techniques, standards and regulations, in particular electrical installation standard IEC 60364 series. We thank all the readers of the previous edition of this guide for their comments that have helped improve the current edition. We also thank the many people and organisations, too numerous to name here, who have contributed in one way or another to the preparation of this guide. This guide has been written for electrical Engineers who have to design, select electrical equipment, install these equipment and, inspect or maintain low-voltage electrical installations in compliance with international Standards of the International Electrotechnical Commission (IEC). “Which technical solution will guarantee that all relevant safety rules are met?” This question has been a permanent guideline for the elaboration of this document. An international Standard such as the IEC 60364 series “Low voltage Electrical Installations” specifi es extensively the rules to comply with to ensure safety and correct operational functioning of all types of electrical installations. As the Standard must be extensive, and has to be applicable to all types of equipment and the technical solutions in use worldwide, the text of the IEC rules is complex, and not presented in a ready-to-use order. The Standard cannot therefore be considered as a working handbook, but only as a reference document. The aim of the present guide is to provide a clear, practical and step- by-step explanation for the complete study of an electrical installation, according to IEC 60364 series and other relevant IEC Standards. The fi rst chapter (A) presents the methodology to be used, and refers to all chapters of the guide according to the different steps of the study. We all hope that you, the reader, will fi nd this handbook genuinely helpful. Schneider Electric S.A. Acknowlegements This guide has been realized by a team of experienced international experts, on the base of IEC 60364 series of standard, and include the latest developments in electrical standardization. We shall mention particularly the following experts and their area of expertise: Chapter Christian Collombet D Bernard Jover R Jacques Schonek D, G, L, M, N Didier Fulchiron B Didier Mignardot J, P Eric Bettega E Emmanuel Genevray E, P Eric Breuillé F Fleur Janet K Franck Mégret G Geoffroy De-Labrouhe K Jean Marc Lupin L, M Daniel Barstz N Jérome Lecomte H Matthieu Guillot F, H, P Michel Sacotte B Schneider Electric - Electrical installation guide 2013 Tools for more effi ciency in electrical installation design Electrical installation Wiki The Electrical Installation Guide is also available on-line as a wiki in 3 languages: > in English electrical-installation.org > in Russian ru.electrical-installation.org > in Chinese electrical-installation.org Our experts constantly contribute to its evolution. Industry and academic professionals can collaborate too! Online Electrical calculation Tools A set of tools designed to help you: p display on one chart the time-current cuves of different circuit-breakers or fuses p check the discrimination between two circuit-breakers or fuses, or two Residual Current devices (RCD), search all the circuit-breakers or fuses that can be selective/cascading with a defined circuit-breaker or fuse p calculate the Cross Section Area of cables and build a cable schedule p calculate the voltage drop of a defined cable and check the maximum length > hto.power.schneider-electric.com Power Management Blog In the Schneider Electric blog, you will find the best tips about standards, tools, software, safety and latest technical news shared by our experts. You will find even more information about innovations and business opportunities. This is your place to leave us your comments and to engage discussion about your expertise. You might want to sharewith your Twitter or LinkedIn followers. > blog.schneider-electric.com/power-management-metering-monitoring-power-quality English Russian Chinese Online tools Schneider Electric - Electrical installation guide 2013 Ecodial Advanced Calculation 4 The new Ecodial Advanced Calculation 4 software is dedicated to electrical installation calculation in accordance with IEC60364 international standard or national standards. This 4 th generation offers new features like: p management of operating mode (parallel transformers, back-up generators…) p discrimination analysis associating curves checking and discrimination tables, direct access to protection settings ID-Spec large ID-Spec Large is a totally innovative software developed specifically to help you design electrical systems of commercial & industrial buildings. Main features: p Define the general architecture of electrical installation p Draw up the power summary p Prepare the single line diagram p Choose and size the MV/LV equipments p Evaluate the Energy performance of the installation p Edit the technical part of the specification for tender Foreword Etienne TISON, International Electrotechnical Commission (IEC) TC64 Chairman. The task of the IEC Technical Committee 64 is to develop and keep up-to- date requirements - for the protection of persons against electrical shock, and - for the design, verifi cation and implementation of low voltage electrical installations. Series of standard such as IEC 60364 developed by IEC TC64 is considered by the international community as the basis of the majority of national low-voltage wiring rules. IEC 60364 series is mainly focussed on safety due the use of electricity by people who may not be aware of risk resulting from the use of electricity. But modern electrical installations are increasingly complex, due to external input such as - electromagnetic disturbances - energy effi ciency - Consequently, designers, installers and consumers need guidance on the selection and installation of electrical equipment. Schneider Electric has developed this Electrical Installation Guide dedicated to low voltage electrical installations. It is based on IEC TC64 standards such as IEC 60364 series and provides additional information in order to help designers, contractors and controllers for implementing correct low-voltage electrical installations. As TC64 Chairman, it is my great pleasure and honour to introduce this guide. I am sure it will be used fruitfully by all persons involved in the implementation of all low-voltage electrical installations. Etienne TISON Etienne TISON has been working with Schneider Electric since 1978. He has been always involved is various activities in low voltage fi eld. In 2008, Etienne TISON has been appointed Chairman of IEC TC64 as well as Chairman of CENELEC TC64. Electrical installation guide 2013 General rules of electrical installation design A B C D E F G H J K L M N Connection to the MV utility distribution network Connection to the LV utility distribution network MV & LV architecture selection guide LV Distribution Protection against electric shocks Sizing and protection of conductors LV switchgear: functions & selection Overvoltage protection Energy Effi ciency in electrical distribution Power factor correction Harmonic management Characteristics of particular sources and loads P Photovoltaic Installations Q Residential and other special locations R EMC guidelines Schneider Electric - Electrical installation guide 2013 General rules of electrical installation design 1 Methodology A2 2 Rules and statutory regulations A5 3 Installed power loads - Characteristics A11 4 Power loading of an installation A16 Connection to the MV utility distribution network 1 Supply of power at medium voltage B2 2 Procedure for the establishment of a new substation B5 3 Protection aspect B7 4 The consumer substation with LV metering B13 5 The consumer substation with MV metering B22 6 Constitution of MV/LV distribution substations B27 Connection to the LV utility distribution network 1 Low voltage utility distribution networks C2 2 Tariffs and metering C16 MV & LV architecture selection guide 1 Stakes for the user D3 2 Simplifi ed architecture design process D4 3 Electrical installation characteristics D7 4 Technological characteristics D11 5 Architecture assessment criteria D13 6 Choice of architecture fundamentals D15 7 Choice of architecture details D19 8 Choice of equiment D25 9 Recommendations for architecture optimization D26 10 Glossary D30 11 ID-Spec software D31 12 Example: electrical installation in a printworks D32 LV Distribution 1 Earthing schemes E2 2 The installation system E15 3 External infl uences (IEC 60364-5-51) E26 Protection against electric shocks 1 General F2 2 Protection against direct contact F4 3 Protection against indirect contact F6 4 Protection of goods due to insulation fault F17 5 Implementation of the TT system F19 6 Implementation of the TN system F23 7 Implementation of the IT system F29 8 Residual current differential devices RCDs F36 Sizing and protection of conductors 1 General G2 2 Practical method for determining the smallest allowable G7 cross-sectional area of circuit conductors 3 Determination of voltage drop G19 4 Short-circuit current G23 5 Particular cases of short-circuit current G29 6 Protective earthing conductor G36 7 The neutral conductor G41 8 Worked example of cable calculation G45 A B C D E F General contents G Schneider Electric - Electrical installation guide 2013 LV switchgear: functions & selection 1 The basic functions of LV switchgear H2 2 The switchgear H5 3 Choice of switchgear H10 4 Circuit breaker H11 5 Maintenance of low voltage switchgear H32 Overvoltage protection 1 Overvoltage characteristics of atmospheric origin J2 2 Principle of lightning protection J7 3 Design of the electrical installation protection system J13 4 Installation of SPDs J24 5 Application J28 6 Technical supplements J32 Energy Effi ciency in electrical distribution 1 Introduction K2 2 Energy effi ciency and electricity K3 3 Diagnosis through electrical measurement K6 4 Energy saving opportunities K8 5 How to evaluate energy savings K23 Power Factor Correction 1 Power factor and Reactive power L2 2 Why to improve the power factor? L6 3 How to improve the power factor? L8 4 Where to install power correction capacitors? L11 5 How to decide the optimum level of compensation? L13 6 Compensation at the terminals of a transformer L16 7 Power factor correction of induction motors L19 8 Example of an installation before and after power factor correction L21 9 The effects of harmonics L22 10 Implementation of capacitor banks L25 Harmonic management 1 The problem: M2 Why is it necessary to detect and eliminate harmonics? 2 Defi nition and origin of harmonics M3 3 Essential indicators of harmonic distortion and M7 measurement principles 4 Harmonic measurement in electrical networks M10 5 Main effects of hamronis in electrical installations M13 6 Standards M20 7 Solutions to attenuate harmonics M21 Characteristics of particular sources and loads 1 Protection of a LV generator set and the downstream circuits N2 2 Uninterruptible Power Supply Units (UPS) N11 3 Protection of LV/LV transformers N24 4 Lighting circuits N27 5 Asynchronous motors N45 Photovoltaic installations 1 Benefi ts of photovoltaic energy P2 2 Background and technology P3 3 PV System and Installation Rules P10 4 PV installation architectures P18 5 Monitoring P31 General contents J K L M N H P Schneider Electric - Electrical installation guide 2013 Residential and other special locations 1 Residential and similar premises Q2 2 Bathrooms and showers Q8 3 Recommendations applicable to special installations and locations Q12 EMC guidelines 1 Electrical distribution R2 2 Earthing principles and structures R3 3 Implementation R5 4 Coupling mechanism and counter-measures R22 5 Wiring recommendations R28 Q R General contents [...]... Extra-low-voltage lighting installations Low-voltage electrical installations - Requirements for special installations or locations - Mobile or transportable units Low-voltage electrical installations - Requirements for special installations or locations – Communal facilities and workplaces Low-voltage electrical installations - Requirements for special installations or locations – Electrical installations in... checking of the installation recommended is respected Schneider Electric - Electrical installation guide 2013 © Schneider Electric - all rights reserved 2.4 Quality and safety of an electrical installation A - General rules of electrical installation design A8 2.5 Initial testing of an installation Before a utility will connect an installation to its supply network, strict precommissioning electrical tests... the existing electrical installations This subject is in real progress cause of the statistics with origin electrical installation (number of old and recognised dangerous electrical installations, existing installations not in adequation with the future needs etc ) Schneider Electric - Electrical installation guide 2013 2 Rules and statutory regulations A9 2.7 Periodic check-testing of an installation. .. Low-voltage electrical installations - Requirements for special installations or locations - Swimming pools and fountains Low-voltage electrical installations - Requirements for special installations or locations - Rooms and cabins containing sauna heaters Low-voltage electrical installations - Requirements for special installations or locations - Construction and demolition site installations Low-voltage electrical. .. locations Low-voltage electrical installations - Requirements for special installations or locations - Marinas and similar locations Low-voltage electrical installations - Requirements for special installations or locations - Medical locations Low-voltage electrical installations - Requirements for special installations or locations - Exhibitions, shows and stands Low-voltage electrical installations - Requirements... Requirements for special installations or locations - Solar photovoltaic (PV) power supply systems Low-voltage electrical installations - Requirements for special installations or locations - Furniture Low-voltage electrical installations - Requirements for special installations or locations - External lighting installations Low-voltage electrical installations - Requirements for special installations or locations... - all rights reserved 1 2 A1 Schneider Electric - Electrical installation guide 2013 1 Methodology A - General rules of electrical installation design A2 For the best results in electrical installation design it is recommended to read and to use all the chapters of this guide in the order in which they are presented A - General rules of electrical installation design Rules and statutory regulations... Low-voltage electrical installations - Requirements for special installations or locations – Operating or maintenance gangways Low-voltage electrical installations - Requirements for special installations or locations - Temporary electrical installations for structures, amusement devices and booths at fairgrounds, amusement parks and circuses Low-voltage electrical installations - Requirements for special installations... Low-voltage electrical installations - Protection for safety - Protection against voltage disturbances and electromagnetic disturbances Low-voltage electrical installations - Selection and erection of electrical equipment - Common rules Low-voltage electrical installations - Selection and erection of electrical equipment - Wiring systems Low-voltage electrical installations - Selection and erection of electrical. .. switching and control Low-voltage electrical installations - Selection and erection of electrical equipment - Earthing arrangements and protective conductors Low-voltage electrical installations - Selection and erection of electrical equipment - Other equipments Low-voltage electrical installations - Verification Low-voltage electrical installations - Requirements for special installations or locations -