一级毛片完整版免费播放一区_91在线午夜福利精品_亚洲欧美自拍紧急通知_精品中文无码Av毛片免费_四虎永久在线精品无码视频下载_神马午夜福利在线观看_亚洲色情视频免费观看_五月激情婷婷亚洲综合网九色_黑人入室强丰满人妻_榴莲视频APP色版成人

Varistors can be used for lightning protection of various equipment such as power lines, communication lines, and data lines. Lightning strikes can cause atmospheric overvoltages. Most of them belong to inductive overvoltage. The overvoltage caused by lightning strike on the transmission line is called direct lightning overvoltage, and its voltage value is particularly high, up to 102~104V, causing great harm.
The use of ZnO varistor arresters is very effective in eliminating atmospheric overvoltages. It is generally connected in parallel with electrical equipment. If the electrical equipment requires very low residual voltage, multi-level protection can be used.