一起高层住宅电梯雷击事故分析

Analysis on a lighting accident in high-rise housing

通过对一起高层住宅电梯遭受雷击事故的现场调查和分析研究,结果表明:天气原因是雷害生成的首要条件,地闪观测资料证实有雷电发生,地理环境显示建筑物位于河流附近而且是高层建筑容易遭受雷击的天面,三种外部条件是外因,内部原因是:在高层建筑物已安装了外部防雷装置且符合国家标准及电梯的供电线路也安装了多级电源电涌保护器的情况下,电梯的控制系统最容易遭受雷击电磁脉冲的损坏导致电梯控制箱内的电路板、变频器损坏出现停止运行。

Based on investigation and analysis of a lighting accident in high-rise housing, the results show that： weather is the first condition of lightning disturbance, lightning observations confirmed with thunder and lightning occurs, geographical environment show buildings near the river and it is the day of the high-rise building vulnerable to lightning, three kinds of external cause is the external condition, internal reason is： in high-rise building external lightning protection device conforming to the state standard has been installed and power supply circuit of the lift is installed under the condition of multistage power surge protector, the elevator control system is the most vulnerable to lightning electromagnetic impulse damage, leading to damage of the circuit boards of elevator control box and inverter.