摘要
简述低压配电系统单相接地故障的含义、安全电压和安全电流 ;指出 TN、TT接地系统装设剩余电流保护器的必要性 ,综述了剩余电流保护器的种类、特点、参数、选择和正确接线方式以及刀极数的确定。
This paper discribes briefly the meaning of single-phase earth fault of low-voltage distribution system,safe veltage and safe current, and points out essentiality of the residual current device set in TN and TT earth systems.It summarizes class,feature,parameter and selection of the residual current device,correct wiring and definition of numher of poles of knife switch.
出处
《电气开关》
2000年第5期33-37,43,共6页
Electric Switchgear
