摘要
介绍了不同高低压接地系统引起的工频过电压,指出在低压供配电网络中安装的电涌保护器(SPD)的UC值选用应考虑工频过电压对其的影响,而其工频暂态过电压必须根据不同的接地系统来考虑。
The power frequency overvoltage caused by different high and low grounding systems were introduced.The influence of power frequency overvoltage on selection of the U C value of surge protection devices（ SPD） in the low voltage power supply network installation was discussed,but its transient power frequency overvoltage must be considered according to the different grounding systems.
出处
《现代建筑电气》
2015年第10期29-33,52,共6页
Modern Architecture Electric
关键词
电涌保护器
工频
暂态过电压
最大持续工作电压
低压供配电系统
surge protective device（SPD）
power frenquency
transient overvoltage
U C
low voltage power distribution system
