Everyone has heard of lightning rods, but lightning rods may be heard less. The function of a lightning arrester is similar to that of a lightning rod. It uses voltage discharge to transfer the current to the ground in the event of an electric shock, thereby protecting live equipment. In short, it is used to protect electrical appliances and circuits. Let's take a look at how lightning arresters protect equipment.

1. The function of the arrester is like a resistor, which is similar to a Zener diode. The size of the resistance changes with the voltage. At present, the arresters we use are basically zinc oxide materials, and the components are zinc oxide valves. Under normal circumstances, the current that can be leaked is not too large, and it has little effect on the operation of the system. If the voltage of the system exceeds the voltage required for normal operation, the arrester will release energy to limit the voltage gain of the system to ensure that electrical equipment is not struck by lightning.

2. Lightning arrester is an indirect grounding device, which is generally introduced into the ground through voltage discharge through lightning to protect electrical equipment. When the weather is good, the inside of the arrester is non-conductive. When there is lightning, it can be protected by beating and conducting.

3. The arrester is connected in parallel with the equipment to be protected. Once the voltage is abnormal, the function of the arrester will be displayed immediately. When the voltage is high, the arrester will immediately lead the inrush current into the ground, and when the high voltage is reached, it will immediately return to its original state.