Practicality of zinc oxide surge arrester(lightning arrester)
In today’s high-voltage power systems, zinc oxide arresters play a vital role. Its practicality lies in its ability to effectively protect power equipment from damage caused by lightning overvoltage and operating overvoltage, thereby ensuring the stable operation of the power system.
Zinc oxide arrester is a special arrester that uses zinc oxide, a material with highly nonlinear resistance characteristics. Under normal voltage, the resistance of zinc oxide is extremely high, almost equivalent to that of an insulator. However, when the voltage exceeds a certain threshold, its resistance drops sharply, allowing current to pass through. This characteristic enables the zinc oxide arrester to quickly limit the overvoltage within a safe range when lightning overvoltage or operating overvoltage occurs, thereby protecting power equipment.
Another advantage of zinc oxide arresters is their extremely fast response. Its action time is less than microseconds, and overvoltage limitation can be completed almost instantly. This enables zinc oxide arresters to effectively prevent the impact of lightning overvoltage on power equipment, avoiding equipment damage and potential power outages.
In addition, zinc oxide arresters have stable performance and long life. Because its internal components use zinc oxide, a stable metal oxide, its performance is less affected by the environment and has a long service life. At the same time, zinc oxide arresters have low maintenance costs, reducing operating costs.
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