In recent years, as China s great efforts to promote the construction of conservation-oriented society, local energy-saving policies have been proposed, among which involves power-saving city road lighting. City road lighting represents the degree of civilization of a city, also is an important way to response to save energy policy. In this paper, application of step-down and saving electricity technology is explained from existent phenomenon of wasting power in current city road lighting.%近年来,随着我国大力倡导建设节约型社会,各地节能政策纷纷出台,城市道路照明节电也囊括在内.城市道路照明代表着一个城市的文明程度,也是响应节约电能政策的重要途径.本文从当前城市道路照明存在的费电现象出发,分析并阐述了降压节电技术在实际中的应用.
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