Working principle of lightning arrester:
High-voltage lightning arrester is a lightning protection device connected between the conductor and the ground, usually in parallel with the protected equipment.
Metal oxide arresters can effectively protect power equipment. Once voltage abnormalities occur, metal oxide arresters will take effect and play a protective role. When the protected equipment is operating at normal operating voltage, the arrester does not work and is regarded as an open circuit to the ground. Once high voltage occurs, endangering the insulation of the protected equipment, the arrester will act immediately and lead the high-voltage impact current to the earth, thus limiting the voltage amplitude and protecting the insulation of the electrical equipment. When the overvoltage disappears, the arrester quickly returns to its original state and the system can supply power normally. The main function of the arrester is to reduce the amplitude of the inrush wave through the parallel discharge gap or non-linear resistor, thereby reducing the voltage value of the protected equipment, thereby protecting the power equipment.
Metal oxide arresters can be used to protect both atmospheric high pressure and operating high pressure. If there is a thunderstorm, lightning will produce high voltage, and electrical equipment may be in danger. At this time, the lightning arrester will work to protect the electrical equipment from damage. The most important function of a lightning arrester is to limit overvoltage to protect electrical equipment. A lightning arrester is a device that allows lightning current to flow into the earth so that electrical equipment does not generate high voltage. The main types of arresters are tube arresters, valve arresters and zinc oxide arresters. The main working principles of various types of lightning arresters are different, but their working principles are basically the same, and they are all to protect the equipment from damage.
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