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Due to the rapid development of building electrical and the economic development and people’s living standards, China’s construction industry has entered a new stage of development. In particular, in recent years, the national high-rise buildings have sprung up in the city, even to senior high-rise building development has become a trend.Building Electricity, with the birth of the development of information industry, and rapidly developed. The development of modern buildings is the result of electrification of the electrical phase, stage, and today’s intelligent automation stage. Smart building technology are developing very rapidly, it is by electronic technology, communication technology, network technology, computer technology, automatic control technology, sensor technology and the most advanced multimedia technology and a series of crystallization of the rapid development of technology. In particular, intelligent building systems engineering, systems engineering as a weak extension and development of comprehensive, involving a wider area of expertise, the new weak systems continue to join the field of intelligent building technology.In short, as social development, intelligent building construction projects will occupy an increasingly important role, but as a Building Electricity design engineers, must be with the times, need to understand and master professional knowledge and other professional fields More, technology updates faster, have the ability to make every project, to adapt to social progress.The design of the main contents of the financial Comprehensive Building. System design including power supply and lighting, weak systems, fire systems, night lighting system and lightning protection grounding system. Each design step is based on design principles, conditions, considering the requirements of reality and rational design.This paper describes the various financial Comprehensive Building Design System based on electrical design, principles and methods and conclusions of design choices. In the low-voltage distribution system, according to the load level, determine the power supply and system solutions. Selected in accordance with the provisions of protection of electrical wire and cable, to secure electricity and energy savings. In lighting design, in line with the principle of energy conservation, choose fluorescent lamps as light source, through the use of illumination required coefficient calculation method to determine the optimum number of light, for employees and customers to create a good working environment.
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