How SPDA works, its importance, and when to install it

This system is designed to protect buildings against the dangers of electrical discharges. Thus, it acts by capturing lightning and safely conducting its energy to the ground, preventing structural damage, fires, and safety risks.

Furthermore, the SPDA reduces the probability of lightning formation around the building, offering complete protection.

Want to learn more about the subject? Then, keep reading!

After all, is it really necessary to invest in an SPDA?

Yes, investing in a Lightning Protection System (SPDA) is essential to ensure the safety of people, buildings, and equipment.

This is because lightning produces intense electromagnetic fields that can generate electrical surges capable of causing serious damage — such as burning electronic equipment, fires, and even structural compromise of buildings.

Without an SPDA, atmospheric discharges can pass through metallic structures, electrical networks, and even reinforced concrete pillars, generating devastating impacts.

Moreover, these effects are not limited to the point of impact: lightning can cause damage within a radius of up to 5 km, also affecting neighboring facilities.

The risks range from perforations and melting of conductors to the collapse of buildings, especially in companies and industries where equipment sensitivity is high.

Even more seriously, lightning represents an imminent danger to human life.

Besides being a safety issue, the installation of an SPDA is mandatory in several situations, such as in tall buildings, industrial facilities, and places that handle flammable materials, as required by Fire Department regulations and NR-10.

Therefore, having an SPDA is an essential investment, both to protect material assets and to preserve lives.

>> You might also like to read: SPDA: Importance in the Protection of People and Buildings

What is the composition of an SPDA?

The Lightning Protection System is composed of several elements that work together to ensure protection against lightning and minimize the damage caused by electrical discharges.

Come with us and check out its main components.

Air terminals (or capture devices)

Their function is to capture the atmospheric discharge, offering a safe path for the electricity. Thus, they are located at the highest point of the building — such as metal rods, meshes, or conductive tapes.

Down conductors

They are cables or conductive tapes that connect the air terminals to the grounding system. Thus, their function is to conduct the electricity from the discharge to the ground in a controlled manner.

Grounding system

It is a set of rods and meshes buried in the ground. In this way, it is responsible for dissipating the discharge energy into the terrain, protecting the building and its occupants.

What are the functions of an SPDA?

The main function of the SPDA is to protect buildings, facilities, and people against the direct and indirect effects of lightning.

Thus, it is designed to minimize the damage caused by the high currents and voltages generated during an atmospheric discharge. Its main functions are:

At Trifásica Elétrica, you will find all the necessary materials to assemble a complete and safe Lightning Protection System.

Contact us through the means available on our website. Protect your building and ensure everyone's safety with Trifásica Elétrica!