Lightning Arrester Pole

A lightning arrester pole does not absorb lightning or stop lightning. It diverts the lightning, limits the voltage and protects the equipment installed in parallel. Surge arresters have many applications, anywhere from protecting a home to a utility substation. What is difference between lightning arrester and surge arrester? Surge arrester protects the installation from inside while lightning arrester protects the equipment from outside. Surge arrester protects the system from lightning, switching, electrical faults and other transients voltage and surges while lightning arrester are mainly used for lightning strikes and associated surges.

Unfortunately not. A common surge protector will stop voltage spikes and surges, but not the violent, catastrophic burst of current from a close lightning strike. Direct lightning current is simply too big to protect with a little electronic device inside a power strip, or even a hefty UPS unit. Is Lightning Alternating Current (AC) or Direct Current (DC)? Lightning is transient impulse. Its neither AC nor DC but a composition of AC and DC. There are two suitable methods of testing lightning protection earths: ‘Fall of Potential/the 61.8% method’ and ‘Dead Earth’. Fall of Potential recommended method and involves the electrode under test; two reference electrodes, a set of leads and four-pole test meter.

The typical Lightning Arrester Pole 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 arrester, in most cases to earth. Location of the Lightning Arrester Pole. The arrester is located close to the equipment that is to be protected. They are usually connected between phase and ground in an AC system and pole and ground in case of the DC system. In an AC system, separate arrester is provided for each phase.

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