邴赫亮（中国电气装备集团科学技术研究院有限公司，上海市 200436）

Analysis on the Selection of Cross‑sectional Area for Low‑voltage Cables

BING Heliang(China Electric Equipment Research Institute of

Science and Technology Co.,Ltd.,Shanghai 200436，China)

Abstract：Based on the influence of the correct selection of cable cross‑section on the safety,reliability and economy of electrical design,the selection of low‑voltage cable cross‑sectional area is analyzed and summarized from multiple perspectives and conditions,including cable voltage drop verification,current carrying capacity correction,short circuit verification,as well as harmonic,mechanical strength,and explosion hazardous environment requirements.

Key words：low‑voltage cable;selection of cross‑sectional area;current carrying capacity correction;voltage drop;short circuit verification;thermal stability verification;harmonic;mechanical strength

摘　要：结合电缆截面积的正确选择对于电气设计安全性、可靠性和经济性的影响，从电缆电压降校验、载流量校正、短路校验，以及谐波、机械强度、爆炸危险环境要求等方面多角度、多工况对低压电缆截面积的选择进行分析、总结。

关键词：低压电缆；截面积选择；载流量校正；电压降；短路校验；热稳定校验；谐波；机械强度

中图分类号：TM247                　  文献标识码：A

doi：10.3969 / j. issn.1003 － 8493.2024.06.013