PREFACEToday, with the strong development of the economic sector in the country. Especially our country are in the period of industrialization and modernization of the country, and more and more industrial zones, export processing zones ... are built. At the same time to raise the standard of living, people's living facilities, the construction of new residential areas to serve the needs of life is urgently needed. So the design of power supply system for apartments is a matter of being interested in power sector, because each subject design, each content calculations are outlined for us the approach, the limitations and strengths of each of the works. Featured in it onto two basic criteria are indicators of economic and technical norms.* In Economics: -Capital savings.-Use less for ferrous metals.-Ensure the minimum operating costs.* Technique:-To ensure the quality of electric power.-The power supply must continuously and safely.-Easy to be flexible in operation and does not cause confusion when used, when the issue.-To pay attention to future development conditions.* The content of this thesis are constructed on the basis of specifications includes the actual figures of apartment CT-06 of the municipality Van Khue-HA Dong town, Ha Noi cityTo calculate the design process and presents the sequence closely about the content we subdivided into the following chapters:Chapter I: introduction to load the zone.
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