1. Air-termination system
Metal objects and metal structures that are used to directly receive or withstand lightning strikes, such as lightning rods, lightning strips (lines), lightning nets, etc.
2. Down conductor system
A metal conductor connecting the air-termination device to the grounding device.
3. Earth termination system
The sum of grounding body and grounding body connecting conductors.
4. Earth electrode
A metal conductor buried in the ground that is in direct contact with the ground. Also called ground electrode. Various metal components, metal facilities, metal pipes, and metal equipment that are in direct contact with the earth can also be used as grounding bodies, which are called natural grounding bodies.
5. Earth conductor
The connecting wire or conductor from the grounding terminal of electrical equipment to the grounding device, or the connecting wire or conductor from the metal object requiring equipotential bonding, the general grounding terminal, the grounding summary board, the general grounding bar, and the equipotential bonding row to the grounding device.
6. Direct lightning flash
Lightning strikes directly on actual objects such as buildings, ground or lightning protection devices.
7. Ground potential counterattack Back flashover
The change of the ground potential of the area caused by the lightning current passing through the grounding point or grounding system. The ground potential counterattack will cause changes in the potential of the grounding system, which may cause damage to electronic equipment and electrical equipment.
8. Lightning protection system (LPS)
Systems that reduce lightning damage to buildings, installations, and other protection targets, including external and internal lightning protection systems.
8.1 External lightning protection system
The lightning protection part of the exterior or body of a building (structure) is usually composed of lightning receptors, down conductors and grounding devices, which are used to prevent direct lightning strikes.
8.2 Internal lightning protection system
The lightning protection part inside the building (structure) is usually composed of equipotential bonding system, common grounding system, shielding system, reasonable wiring, surge protector, etc. electromagnetic effect
