线路的过负荷保护  

Overload Protection of Circuit

作　　者：孙胜进[1] 

机构地区：[1]辽宁省建筑设计研究院,沈阳市110005

出　　处：《建筑电气》2016年第12期25-27,共3页Building Electricity

摘　　要：消防用电设备在火灾时连续供电的重要性不言而喻,取消消防用电设备及其线路的过负荷保护是否安全、适用?虽然过负荷危害远不及短路,但是过负荷保护远比短路保护的范围大,而且接近短路整定值的部分难以准确界定是短路还是过负荷,基于此,阐述线路过负荷保护的重要性。The significance of continuous power supply to fire control electrical equipment in case of a fire is self-evident, so whether cancelling the overload protection for fire control electrical equipment and circuit is safe and suitable？ Though the hazard of overload is far less than that of short circuit, the scope of overload protection is far more than that of short-circuit protection, and it is difficult to accurately define whether it is overload or short circuit for parts approaching to circuit. Base on this, the the set value for short significance of circuit overload protection is demonstrated in this paper

关 键 词：消防用电设备 电气线路 过负荷 短路 断路器 瞬时过电流保护 定时限过电流保护 反时限过电流保护 

分 类 号：TU852[建筑科学]