How does a Surge Arrester work ?
Surge arresters are devices designed to protect an electrical system in case of an unexpected discharge. Sudden changes in voltage can ruin the delicate components in an electrical system
Surge arresters work as a defense against voltage spikes by diverting the excess of voltage into the ground. It’s best to think of an arrester like a street with two ways. During regular use, the arrester allows voltage to pass through the system as normal. However, when a spike is detected, the arrester redirects the excess through its landline, while also allowing the regular voltage to continue as normal.
In short, it’s a safety device that makes sure your grid continues to work normally even in the case of unexpected spikes. Surge arresters are used to keep buildings safe in case of lightning for example, but they also work for smaller scale surges and as such are great protection.