按电压损失校验中低压电缆的截面

在选择中、低压电缆截面时，设计人员不仅要按允许电流选择，按热稳定校验，而且还要按电压损失校验电缆截面。介绍了对常用380V、10kV不同截面电力电缆在额定电流运行时电压损失的计算，由此推算出电压损失不超过规定值（额定电压的5％）时各种截面电缆的最大允许距离，从而方便了设计工作。

Verification of the Cross Section of MV and LV Cable According to Voltage Loss

In selecting cross section of MV or LV cable, it not only needs to select according accepted current and to check according thermal stability, but also needs to verify according voltage loss. The paper introduces the calculation of voltage losses of common 380 V and 10 kV cables operating at rated Current, and thereby calculates the maximum allowable distances of various cross section＇s cables in the condition of the voltage loss within specified value （5% rated voltage）, thus it is convenient to design work.