Surge arrester. 1) An electrical appliance used to protect electrical equipment from high transient overvoltage hazards and to limit the duration and amplitude of the continuous current. This term includes any external clearances necessary for the normal functioning of the electrical appliance during operation and installation, regardless of whether it is an integral component or not. Note 1: Lightning arresters are usually connected between the grid wire and the ground wire, but sometimes they are also connected next to the electrical winding or between the wires. Note 2: Lightning arresters are sometimes referred to as overvoltage protectors or surge dividers. Extract from: "Electrotechnical Terminology Lightning Arresters, Low Voltage Surge Protectors and Components", GB/T 2900.12-2008. 2) Lightning arrester is another important device commonly used in communication cables to prevent lightning damage. Below is an introduction to the relevant knowledge of lightning arresters
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