Lightning arrester and lightning arrester, literally feel that these two things are the same, to put it simply and plainly, they are used for lightning.

Lightning arrester: An electrical appliance used to protect electrical equipment from high transient overvoltage during lightning strikes, and to limit the freewheeling time, and often limit the freewheeling assignment. Lightning arresters are sometimes called overvoltage protectors and overvoltage limiters.

Lightning protector: It is also called a surge protector, which is an electronic device that provides safety protection for various electronic equipment, instruments and communication lines. When a sudden current or voltage suddenly occurs in a circuit or communication line due to external interference, the surge protector can conduct the shunt in a very short time, thereby preventing the surge from damaging other devices in the circuit.

Domestic lightning protection technology originated in the 1980s. During the same period, foreign lightning protection products and technologies were continuously introduced. International IEC standards have largely affected the development of the lightning protection market.

There has also been differentiation in the application of lightning protection products, and new content has been given to the names and concepts of lightning protection products.

In practical applications, surge protectors mostly refer to a lightning protection device used in low-voltage power distribution systems and weak current systems to limit transient overvoltage. The lightning arrester refers to a lightning protection device used in a high-voltage power distribution system in a specific industry and application environment. In China, the main differences between the two are as follows:

One, rated voltage and nominal discharge current

The rated voltage range of the arrester is 0.28kV～3kV, and the nominal discharge current of the arrester is 20kA, 10kA, 5kA, 3kA, 1kA.

The rated voltage range of the surge protector is 5V～1.2kV; the nominal discharge current of the surge protector is 120kA, 100kA, 80kA, 60kA, 40kA, 20kA, 10kA, 5kA, 3kA, etc.

Two, protection scope model category

Lightning arrester is used to protect the insulation of AC transmission and transformation equipment from lightning overvoltage and working overvoltage. There are mainly zinc oxide arresters, exhaust arresters, and DC arresters.

is suitable for overvoltage protection of transformers, transmission lines, distribution boards, switch cabinets, power metering boxes, vacuum switches, parallel compensation capacitors, rotating electrical machines and semiconductor devices.

Surge protectors are generally defined as surge protection for low-voltage power distribution systems and weak electronic systems. They are generally divided into three categories: power surge protectors, signal surge protectors and antenna surge protectors.

Three, response time

The response time of the surge protector is generally between 20-25ns, with fast response time and high protection performance, which is suitable for the delicate protection of more sensitive electronic equipment. The response time of arresters is generally above 100ns, which is suitable for the protection of transmission lines. This also determines the difference in its protection objects and installation locations.

Fourth, manufacturing process and material

Surge arresters are mostly made of zinc oxide lightning protection components with insulating silica gel and other materials. Surge protectors generally consist of varistors, semiconductor devices, electrostatic protection components, shell plastics and special potting materials. Of course, the manufacturing process is very Big difference.

From the above point of view, I feel that the lightning protection device is relatively tall. In fact, this is not important. It is important to decide which lightning protection product to choose according to the actual situation and specific needs. This is the key point.

With the development and progress of science, it is now the age of electronic information technology, and information technology products are everywhere. Then the problem is that so many information technology products must have security risks, and lightning protection is particularly important.