Lightning arresters are connected in parallel to the protected equipment or facilities. Normally, the device is insulated from the ground. When lightning overvoltage occurs, the device changes from insulation to conduction and undergoes breakdown and discharge, leading lightning current or overvoltage to the ground for protection. After the overvoltage is terminated, the lightning arrester quickly returns to a disconnected state and resumes normal operation. Lightning arresters are mainly used to protect power equipment and power lines, and are also used as safety measures to prevent high voltage from entering the room. Lightning arresters have protective gaps, tube type lightning arresters, valve type lightning arresters, and zinc oxide lightning arresters
Lightning arrester is an overvoltage protection device used to prevent atmospheric overvoltage generated by lightning from invading substations or other buildings along overhead lines.
. Lightning arresters can also limit internal overvoltage. Lightning arresters are generally connected in parallel with the protected equipment and are located on the power supply side, with a discharge voltage lower than the insulation withstand voltage value of the protected equipment. When overvoltage invades along the line, it will first cause the lightning arrester to break down and discharge to ground, thus protecting the equipment behind What is the testing fee
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