欧美成人天天综合在线,国产亚洲欧美中文字幕,精品国精品无码自拍,久久精品国产免费

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.