星三角降压启动电机的线路选型分析
张翼凡 张 钊(山东省建筑设计研究院有限公司,济南市 250022)
Line Selection for Motors with Star / Delta Step‑down Starting
ZHANG Yifan ZHANG Zhao(Shangdong Provincal Architecture Design & Research Institute
Co.,Ltd.,Ji’nan 250022,China)
Abstract:The cross sections of motor three‑phase power conductor and earth conductor(including the lines in and out of the control box)are selected based on the calculated current in star / delta step‑down starting process.
Key words:three‑phase AC motor;star / delta step‑down starting;delta wiring;star wiring;impulse current;cross‑section of cable;power conductor;earth conductor
摘 要:通过对电机星三角降压启动过程的电流计算,对电动机三相电源线及接地线的截面进行选择,包括控制箱的进线及出线。
关键词:三相交流电动机;星三角降压启动;三角形接线;星型接线;冲击电流;电缆截面;电源线;接地线
中图分类号:TU852 文献标识码:A
doi:10.3969 / j. issn.1003 - 8493.2021.08.010