摘要
介绍了ＤＷ４５和ＤＷ４８等智能化断路器单相接地保护的工作原理。结合配电系统中ＴＮ、ＴＴ、ＩＴ三种不同的接地制式，阐明了接地保护功能的使用范围、方法及意义。
The Single phase earth fault protection of some intelligent circuit breakers such as DW45 and DW 48 is introduced.Combined with the three different earthing patterns——TN,TT,IT in the distribution system,the function of earthing protection and its meaning and use range are described.
出处
《低压电器》
北大核心
1998年第5期40-43,共4页
Low Voltage Apparatus
关键词
接地保护
接地方式
断路器
配电系统
单相接地
single phase earth fault protection earthing patterns circuit breaker use range
