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作 者:黄家室
机构地区:[1]厦门华旸建筑工程设计有限公司,福建省厦门市361004
出 处:《建筑电气》2007年第2期8-11,共4页Building Electricity
摘 要:对中、低压配电线路在选用铜铝导体方面做些探讨,指出应当根据使用性质、用途、环境、规格大小等诸因素的不同,进行技术经济比较,方可确定选用的导体材料。当铝的截面积是铜的1.64倍时,损耗小于铜。同规格同型号的电缆,铜芯价格是铝芯的6倍。为满足热稳定要求,同样情况下,铝芯线缆截面积应是铜的1.52倍。避免只盲目选用铜材,主张铜铝并用,各得其所,达到技术、经济的和谐统一。This paper presents the discussion on how to make choices between copper and aluminum conductors for middle-voltage and low-voltage electricity supply. The selection should depend on both technical and cost requirements, and varies on factors such as application feature, usage, environment, specification and size etc.. The loss of aluminum is smaller than that of copper when its cross-section area is 1.64 times of that of copper. The price of copper-core cable is six times as much as that of aluminum-core cable with same specification and same type. To satisfy the requirement of heat-stability, the area of cable cross-section of aluminumcore should be 1.52 times as big's that of coppercore. The blindly, solely selection of copper conductors should be avoided. Instead we suggest that the combined choice of copper and aluminum conductor be used in order to achieve balance between technique requirement and cost-efficiency.
分 类 号:TM726[电气工程—电力系统及自动化]
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