Abstract
This chapter is designed to study electrical distribution and installations. It introduces the basic items of design and specification for the principal systems and components of an electrical industrial installation. It discusses electrical supply systems with regard to interface with the supply authorities and the characteristics. It also introduces and discusses salient features of switchgear, transformers, protection systems, power factor correction, motor control equipment, and standby supplies together with reference to the relevant Codes of Practice and standards. This chapter describes the equipment and systems that are appropriate to industrial plant installations operating at typically 11 kV with supply capacities of around 20 MVA. The majority of industrial installations receive all or part of their electrical energy from an area electricity board supply authority. The factors which will affect the way in which this energy is imported to the site and subsequently controlled are: the voltage and frequency, the load requirements, the fault level, the tariff, and access to equipment.
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