LIGHTNING ARRESTER Meaning and
Definition
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A lightning arrester is a specialized electrical device designed to protect the surrounding electrical equipment and structures from the damaging effects of lightning strikes. It is commonly installed in buildings, power transmission lines, and telecommunication systems.
The primary function of a lightning arrester is to divert the excessive electrical surge of energy caused by a lightning strike away from the equipment it is installed to protect. The arrester provides a low resistance path to ground, effectively bypassing the excess electrical charge and preventing it from damaging the connected devices.
Typically, a lightning arrester consists of a metal oxide varistor (MOV) or a gas discharge tube (GDT) that reacts and conducts when exposed to voltage surges above a predetermined threshold. These voltage-responsive elements are connected in parallel to the protected circuit, continuously monitoring the incoming electrical current.
When lightning or any other power surge exceeds the arrester's threshold voltage, the voltage-responsive element activates and creates a low resistance path to the ground, diverting the excess current safely away. The arrester quickly absorbs the surge energy, discharges it to the ground, and resumes its protective state for future surges.
By effectively preventing electrical current from travelling down the protected circuit, a lightning arrester safeguards equipment, preventing damage, and significantly reducing the risk of electrical fires that can result from lightning strikes.
Common Misspellings for LIGHTNING ARRESTER
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Etymology of LIGHTNING ARRESTER
The word "lightning arrester" has a straightforward etymology. "Lightning" refers to the natural electrical discharge that occurs during a thunderstorm, usually in the form of a bright flash or bolt of electricity. It originated from the Old English word "lihting", which meant "light" or "fire". "Arrester" refers to something that prevents or stops the progress or motion of something else. It comes from the Old French word "arrestre", which means "to stop". Therefore, a "lightning arrester" literally means something that stops or prevents the progression of a lightning strike, specifically in the context of protecting electrical equipment from damage.
Similar spelling words for LIGHTNING ARRESTER
