1. Direct lightning strike of CNC equipment: Direct lightning strike contains a great deal of energy, and the peak voltage of lightning can reach 5000kv, which flows into the ground and has a great damage force. There are three kinds of impacts.
(1) Infinite rich current flows down in milliseconds, which makes the ground potential pick up quickly, forming a counter-attack, harming the safety of people and equipment.
(2) Lightning current generates strong electromagnetic waves and induces extremely high pulse voltages on power and signal lines.
(3) Lightning current flows through electrical equipment to produce extremely high heat, resulting in fire or blasting incidents.
2. Conducting Lightning of CNC Equipment: Electrical equipment that strikes a line in the distance or is very high voltage due to electromagnetic induction is transmitted from outdoor power supply lines and communication lines to indoor buildings.
3. Induction thunder: Strong electromagnetic waveguide caused common mode and differential mode disturbance by frequent discharges between clouds affects the operation of electrical equipment.