摘要
根据GB 50054-2011《低压配电设计规范》的有关规定,对接地故障回路阻抗计算中,在不同类型的保护电器情况下,如何确定Ia值和接地故障回路的允许最大阻抗(计算值)进行探讨。
The paper discusses the method for determining Ia value and the maximum allowable impedance （ calculated value） during the calculation of grounding fault loop impedance under protection of various types of electric equipment, according to related regulations of GB 50054 - 2011 Code for Design of Low Voltage Electrical Installations.
出处
《建筑电气》
2014年第9期3-6,共4页
Building Electricity
关键词
接地故障
回路阻抗
允许最大阻抗
整定电流
动作电流
瞬动脱扣范围
家用交流断路器
熔断器
grounding fault
loop impedance
maximum allowable impedance
setting current
action current
instantaneous tripping range
household AC circuit-breaker
fuse
