what is surge arrester
A surge arrester is device that intercepts electrical surges and sends the spike to ground before it can hurt a connected device.These arresters are also known as surge protectors or lightning arresters, but there are some very small differences between these devices.his will stop the surge, but it also destroys the device. If the arrester is improperly installed, this fusion can cause more problems than the initial surge. The differences between a surge arrester, a surge protector and a lightning arrester are very minor.
A lightning arrester is a device used on electrical power systems and telecommunications systems to protect the insulation and conductors of the system from the damaging effects of lightning. The typical lightning arrester has a high-voltage terminal and a ground terminal.When a lightning surge (or switching surge, which is very similar) travels along the power line to the arrester, the current from the surge is diverted through the arrestor, in most cases to earth. lightning arrester may be a spark gap or may have a block of a semiconducting material such as silicon carbide or zinc oxide. Thyrite was once a trade name for the silicon carbide used in arresters.