经济电流密度就是使输电导线在运行中，电能损耗、维护费用和建设投资等各方面都是最经济的。根据不同的年最大负荷利用小时数，选用不同的材质和每平方毫米通过的安全电流值。
很重视对导体中的经济电流密度的评估。
Much attention is paid on the economic current density in the conductor.
目前我国规程规定仍按1956年制定的经济电流密度选取导线截面。
Now, the conductor section is selected in accordance with the economic current density stipulated in the code currently in effect which is issued in 1956.
从工业企业经济效益的观点出发，文中推导出架空导线的经济电流密度的几种表达形式。
According to the viewpoint of economic effect of induStrial enterpriSe, Several expreSSionS of economical current denSity for overhead line conductorS are derived in thiS paper.
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