Why do distribution boxes need to be equipped with a surge protective device?

In today’s technologically advanced world, the need for surge protective device (SPD) in distribution boxes cannot be underestimated. Surge protectors play a vital role in protecting electrical and electronic equipment from lightning strikes and overvoltage damage. The high voltage and current generated during lightning strikes, coupled with the short duration of energy release, pose a major threat to power lines, signal lines, antenna feeders and metal pipelines. This can have devastating consequences for electrical and electronic equipment and information network systems. The residual voltage and induction lightning generated by lightning strikes can cause short circuits, combustion, and explosions in electrical equipment, causing heavy losses. Therefore, it is imperative to install surge protection devices in distribution boxes to mitigate these risks and ensure the protection of valuable equipment and systems.

The moment lightning is released, the energy released is huge and can directly or indirectly invade various key systems. External lightning protection measures such as lightning rods are not sufficient to offset the potential damage caused by lightning waves. This is where surge protection devices come into play. They are specifically designed to protect against lightning strikes and resolve resonant overvoltages in low-voltage distribution lines. The surge protector quickly transmits high voltage and large current to the earth through the lightning protection grounding wire, protecting the distribution box from lightning strikes and reducing the impact of overvoltage. Therefore, installing a surge protector in the distribution box is an indispensable protection measure in the low-voltage power supply system.

The importance of surge protectors in distribution boxes cannot be overstated, especially when faced with severe natural disasters such as lightning strikes. The potential harm caused by lightning strikes and overvoltage to electronic and electrical equipment and information network systems highlights the urgent need for effective protective measures. By installing surge protectors in distribution boxes, you can significantly reduce the risk of damage caused by lightning strikes and overvoltage, ensuring the safety and functionality of important equipment and systems.