What is the function of lightning arrestors in electrical systems?

The primary function of lightning arrestors in electrical systems is to protect equipment from voltage spikes, especially those caused by lightning strikes or other transient surges. When a lightning strike occurs, or when there is a sudden surge in electrical voltage, lightning arrestors provide a pathway for the excess energy to be diverted away from sensitive equipment. This diversion helps prevent damage that could otherwise result from high voltage, ensuring that the electrical systems remain operational and equipment is safeguarded from potentially catastrophic failures.

By effectively clamping down on these voltage spikes, lightning arrestors contribute to the overall stability and reliability of the electrical distribution system. They help maintain safe operating conditions and extend the life of both the infrastructure and the connected devices. This protective capability is crucial, especially in areas prone to thunderstorms and electrical disturbances.