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目前,已被人们广泛采用的避雷针、避雷网、和避雷器等消极迎雷的方法统称为传统避雷。传统避雷一旦遭受雷击,雷电流强度高达数十至数百千安,雷电压高达数万至数千万伏,在瞬间可产生高达20000℃的温度和100个大气压的物理现象。所以传统避雷防护范围小(地面防护角度为45°),而且雷击仍不可能完全避免。
At present, the methods commonly used by people such as lightning rods, lightning protection nets, and lightning arrestors are collectively referred to as traditional lightning protection. Once a lightning strike is applied to the conventional lightning protection, the lightning current intensity is as high as several tens to several hundreds of kiloamperes, and the lightning voltage is as high as tens of thousands to tens of millions of volts. In the instant, a temperature of up to 20,000° C. and a physical phenomenon of 100 atmospheres can be generated. Therefore, the scope of traditional lightning protection is small (ground protection angle is 45°), and lightning can not be completely avoided.