摘要
从单相接地故障电流的保护技术要求角度出发,针对二次回路中不同熔断器容量选型和不同控制电缆线芯截面选型,研究其最大配电距离,并对熔断器选型、熔断器与断路器保护比较等问题进行探讨。
The paper,from the point of view of the protection requirements of single‑phase earth fault current,studies the maximum distribution distance for different fuse capacity selection and different control cable core section selection in the secondary circuit,and discusses the selection of fuse,the comparison of fuse and circuit breaker protection,etc.
作者
钱中阳
杨金宝
焦建雷
QIAN Zhongyang;YANG Jinbao;JIAO Jianlei(CSCEC AECOM Consultants Co.,Ltd.,Lanzhou 730000,China;Lanzhou Urban Construction Design Institute,Lanzhou 730050,China;Beijing Scientech International Project Management Co.,Ltd.,Beijing 100048,China)
出处
《建筑电气》
2021年第1期39-42,共4页
Building Electricity
关键词
接地故障
保护灵敏度
电压降
配电距离
控制电缆
电缆截面
熔断器
后备保护
earth fault
protection sensitivity
voltage drop
power distribution distance
control cable
cross‑section of cable
fuse
backup protection
