(Lightning Protection System), popularly known as a lightning rod, is designed to capture and divert the electrical current from a lightning strike
What is SPD?
SPD (Lightning Protection System), popularly known as a lightning rod, is designed to capture and divert the electrical current from a lightning strike to the ground, thus protecting structures and people from the harmful effects of lightning.
The basic operation of an SPD involves the following components:
Air Terminals or Lightning Rods: These are metal rods or tips installed at the highest point of buildings. These terminals have the function of attracting lightning, providing a preferred path for the electrical discharge.
Down Conductors: These are metal cables that connect the air terminals to the ground, ensuring a safe route for the lightning current. Down conductors are installed following technical standards and are sized according to the structure of the building.
Grounding System: It is responsible for dissipating the electrical current captured by the SPD into the ground. It consists of a mesh of buried metal conductors, interconnected with the down conductors. The grounding system must have adequate resistance to ensure the efficiency of the SPD.
Protection Devices: These are installed at strategic points of the system to ensure protection against overvoltages and excessive currents. These devices can include surge protection devices (SPDs) or varistors, which act to limit overvoltages and protect equipment connected to the electrical installations.
Why is it important to have an SPD?
When a lightning strike occurs, the air terminals of the SPD attract the lightning, which is conducted through the down conductors towards the ground. The electrical current is then dissipated through the grounding system, ensuring that it does not spread through the structure of the building or cause damage to electrical equipment.
It is important to note that an SPD is only one of the measures for lightning protection, and its effectiveness depends on proper installation, considering the characteristics of the building, applicable technical standards, and regular maintenance of the system. Consulting a qualified professional in electrical projects and installations is essential to ensure the efficiency and safety of the SPD.
How can Comquality Engineering contribute to your company?
Comquality Engineering offers a range of services in Electrical Safety Engineering, including the development of technical documentation, diagnostics, identification of solutions for problems, training, and audits. Need assistance with the electrical safety of your company’s installations? Contact our team through the contact information below:
🌍 www.comquality.com.br
📩 comercial@comquality.com.br
📞 71 3622-1255