A lightning arrester is a device used to protect a variety of electrical equipment and systems from the effects of lightning. This device uses a technology called Corona discharge.

Corona Discharge Technology uses the mechanism of discharge of high voltage in a short period of time by ionization of nearby air ions. A typical [url="https://renownpower.com/types-of-lightning-arrester"]lightning arrester[/url] consists of a high-voltage terminal at the top, followed by a low-voltage terminal at the ground.