Electromagnetic pulse from lightning
The formation of the electromagnetic pulse in lightning is due to the electrostatic induction of the charged cloud layer, which makes a certain area of the ground carry a different charge. When a direct lightning strike occurs, the powerful pulse current will generate electromagnetic induction on the surrounding wires or metal objects to generate high voltage and cause a lightning strike, which is called “secondary lightning” or “inductive lightning”. The powerful instantaneous electromagnetic field generated during the lightning induction process, this powerful induced magnetic field can generate induced charges in the ground metal network. Including wired and wireless communication networks, power transmission networks and other wiring systems made of metal materials. High-intensity induced charges will form a strong instantaneous high-voltage electric field in these metal networks, thereby forming a high-voltage arc discharge to electrical equipment, which will eventually cause electrical equipment to burn out. In particular, the damage to weak current equipment such as electronics is the most serious, such as televisions, computers, communication equipment, office equipment, etc. of household appliances. Every year, more than ten million electrical equipment accidents are destroyed by induced lightning. This high-voltage induction can also cause personal injury.
Post time: Dec-27-2022