How To Use Surge Protectors To Protect Equipment From Lightning Outdoors

To protect against direct lightning strikes, one or more lightning rods can be installed outdoors as needed. The protection range should be calculated to ensure that all outdoor equipment is protected. Furthermore, surge protective device protection should be installed on the outdoor busbars and transformer neutral points. An outdoor grounding grid should be constructed, with all equipment down conductors welded to this grounding grid to ensure equipotentiality.

To prevent overvoltages from lightning strikes, the insulation level of various surge protector equipment must meet the required insulation requirements. We strictly control equipment ordering and factory testing to ensure the insulation withstand voltage level of surge protection device equipment in accordance with regulatory requirements to prevent lightning damage. This lightning protection structure has many advantages:

① It prevents "circuit strikes";

② It acts as a "Faraday cage" shield, significantly reducing the intrusion of lightning electromagnetic pulses;

③ Because the conductive materials, such as beams, columns, floor slabs, and wall steel bars and metal pipes, on each floor of a building are electrically connected, the potential is nearly equal everywhere, thus ensuring equipment safety;

④ The down conductor of the "cage" lightning arrester is composed of numerous steel bars, which greatly disperses the lightning current and reduces the amplitude of the pulse electromagnetic field impact on the information equipment within the building;

⑤ The grounding body is a reinforced concrete foundation distributed underground, forming a uniformly distributed voltage-equalizing network with a wide contact surface with the earth, resulting in low and stable grounding resistance.