摘要
分析装置事故段电源失电的原因,联锁停止运行信号在设计时采用触发5s脉冲的方式,无法满足电气直流系统及微机继电保护系统失电的极端情况,将触发5s脉冲方式改为75s脉冲之后,电动机可以有效停止运行。
The reason of electric power failure accident in the plant was analyzed.During engineering design,the interlock OFF operation signal activated 5 s pulse,which couldn't meet the requirement under extreme conditions,such as power OFF in DC system and in UPS system of the computer.So we changed the activating time from 5 s pulse to 75 s pulse,which can effectively shut down the electric motor.
作者
李昉骏
Li Fangjun(China Blue Chemical Ltd.,Dongfang 572600)
出处
《大氮肥》
CAS
2020年第4期264-265,288,共3页
Large Scale Nitrogenous Fertilizer Industry
