The Role Of Surge Protector

Lightning is a common natural phenomenon in our lives. Although it flashes and disappears in an instant, it contains huge energy. If this huge energy is not protected, it will cause huge damage. In lightning protection, we often mention a term-surge protector. So what is the role of this surge protection device? Today, the editor will take you to understand the role of surge protective device.

The role of surge protectors, lightning intrusion into power systems usually takes two forms-direct lightning and induction lightning. Their intrusion into the system will cause the line voltage to rise instantly. We call this voltage lightning overvoltage. If lightning protection measures are not taken before it invades the power system, the huge lightning overvoltage will damage the electrical equipment and even cause fires, causing huge damage to the safety of life and property. Therefore, in lightning protection, in addition to external lightning protection measures such as lightning rods, equipotential connections, and grounding devices, we also need to use surge protectors as internal lightning protection measures.

The role of surge protectors is that they can quickly discharge a large amount of lightning current and control lightning overvoltage within a safe range in a short time. When the power network is in normal working condition, the surge protector is in a high resistance state, so it will not affect the power network in normal working condition. Once the system generates overvoltage (including but not limited to lightning overvoltage), it will show a low resistance state, and then a large amount of lightning current will be discharged to our grounding device through the surge protector, thereby reducing the impact of lightning to a level acceptable to the power system, and ultimately protecting our lives and property.