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Electrical Installation Guide Summary General rules of electrical installation design  This category presents the general rules for designing an installation and presents the involved IEC standards. It gives help in calculation of installed power loads. Connection to the MV utility distribution network  This chapter presents the main methods of connection to the MV utility distribution network. Connection to the LV utility distribution network This chapter presents the main methods of connection to the LV utility distribution network. MV & LV architecture selection guide  Given a particular building, we show how to select the right solution during pre-design and budget step: find a compromise between costs and ratings of the installation during its whole life cycle. LV Distribution Conception rules of an electrical installation. System earthings. Protection against electric shocks  This chapter explains how to determine protective devices in order to protect people from direct & indirect contacts and to protect equipments and goods from fire risks. Sizing and protection of conductors  Practical methods for conductor sizing and protection are given. LV switchgear: functions & selection  The basic functions of LV switchgear are described, as well as the selection rules for ensuring the protection coordination. Protection against voltage surges in LV The effects of lightning are described. Protective devices are proposed and implementation rules are given. Energy Efficiency in electrical distribution Power monitoring and control system contributes to global "energy efficiency". Such a system is of high benefice for the owner of an electrical network. Power factor correction and harmonic filtering This chapter explains how power factor correction is implemented in LV electrical installation. Practical examples are given. Harmonic management The origin and effects of harmonics are described. Measurement and filtering methods are proposed. Characteristics of particular sources and loads Specific sources and loads are studied: generators, inverters, induction motors, lighting circuits, LV/LV transformers... Photovoltaic installations Residential and other special locations The specific intallations rules applicable to residential premises and some other locations are presented. EMC guidelines This chapter describes the basic rules for ensuring EMC: earthing principles, cable lay-out, wiring recommandations.

News Template:News Highlights New content on Ultra Rapid circuit breaker As installed power increases, electrical distribution has to shift from a LV design to a HV design. Indeed, a high short-circuit level can be a threat to the installation and make impossible the selection of low voltage equipments (Switchboard and bus bars, circuit breaker…) These situations can be met in the following applications: Bus bars coupling onboard merchant vessels, off shore platform, loop networks (in industry), where the current and energy are important because of the installed power (several transformers or generators in parallel) and HV design not easy. <more> Electrical protection against surges 6 pages dedicated to electrical protection against surges have just been fully updated. In addition to describing the operation of the surge arrester, the emphasis is on the method of choice and their location in the architecture of the electrical installation. Similarly the security of the facility is an essential element; coordination table between the arrester and its short circuit protection device is proposed. This is the result of extensive studies and tests in laboratories conducted by specialists which expertise is about short circuit breaking and lightning electromagnetic phenomena. Pages: Overvoltage characteristics of atmospheric origin Principle of lightning protection Design of the electrical installation protection system Installation of Surge Protection Device Surge protection example Surge protection technical supplements