摘要
分析了10kV配电变压器在运行中因一相跌落式开关脱落,造成三相异步电机烧毁事故的原因。为防止类似事故再次发生,提出在三相重要动力负荷的电源侧加装一套三相电压平衡保护装置,一旦发生三相电源非全相运行,及时、准确跳闸,保证用电设备的安全运行。
This paper analyzed the causes of three-phase asynchronous motor overburning due to one-phase switch falling off,when 10 kV distribution transformer operated, in order to prevent similar accidents, the three-phase voltage balance protection device was installed in the power load side of three-phase power. If the non-full-phase operation of the three-phase power occurs, the three-phase woltage balance protection device can timely and accurately trips, which ensures the safe operation of electric equipments.
作者
潘英吉
周和平
PAN Yingji ZHOU Heping(Jilin Electric Power Supply Company, Jilin 132001, China Jilin Electric Power Equipment Installation Co. , Ltd. , Jilin 130021 , China)
出处
《现代建筑电气》
2017年第4期30-32,共3页
Modern Architecture Electric
关键词
变压器
非全相运行
事故分析
保护装置
transformer
non-full-phase operation
accident analysis
protection device
