摘要
通过石油化工装置区照明线路L-N间及L-PE间的短路电流计算,比较不同截面、长度的线路与保护电器不同脱扣器之间的配合问题,计算了照明线路剩余电流保护的合理整定电流值,通过不同的脱扣器和不同的保护方式说明上下级之间的保护配合问题。
Through the short-circuit current calculation of L-N and L-PE lighting circuits in a petrochemical plant area,the matching problems of different line section / length and different releases of electrical protective device were compared. The reasonable setting current value of residual current protector of the lighting circuit was calculated. The matching of the upper-stage and lower-stage electrical protective devices was illustrated through different releases and different protection modes.
出处
《现代建筑电气》
2016年第7期21-25,共5页
Modern Architecture Electric
关键词
单相短路
保护灵敏性
剩余电流保护
脱扣器
single-phase short-circuit
protection sensitivity
residual current protection
release