What brand of lightning rod is the best?

First, several key points of selecting power arrester

1, the selection principle of power arrester

(1), according to the lightning surge intensity in the lightning activity area where the protected equipment is located.

(2) according to the degree of lightning impact on the protected equipment

(3), according to the importance and value of the protected equipment

2. Matters needing attention in the selection of power arrester

(1), the geographical position of China and the United States is very similar. Because of their vast areas, they are all areas with great differences in lightning intensity in the world, especially in the south, where the lightning intensity is high and the subsequent lightning strikes are serious. Therefore, the design of lightning surge protector of jocelyn Company in the United States completely adopts a unique patented technology-matrix structure, which can withstand repeated lightning shocks and has obvious advantages. Europe is located in the north, the degree of lightning disaster is quite low, and the product design is mostly integral structure. When installed in a thunderstorm area, once the product is struck by lightning, it will not be able to protect the equipment from lightning damage when it is subsequently struck by lightning. Therefore, special attention should be paid when selecting lightning protection products.

(2) At present, the primary lightning surge protectors on the market are mostly combined lightning protection boxes consisting of gap lightning protection elements+inductors+rheostat (40KA), but there is a fatal weakness because there are series inductance elements (decoupling devices) inside-once the elements are damaged, the whole power supply system will be cut off (which is the most unsuitable for radio and television transmission systems). The field operation shows that in this combined lightning protection box, there are many records that the 40KA module connected in series behind the inductor is damaged by lightning (there may be blind spots or reflection problems between them).

Second, the United States jocelyn power arrester.

(1) Brief introduction of Johnston Company in America

It has a long history-Johnson Company of the United States is a professional company in the lightning surge protection industry, specializing in lightning and instantaneous overvoltage protection since 1950;

There are many customers-its products are distributed in the communication, electric power, transportation, aerospace, aviation, finance and computer departments in more than 30 countries around the world, especially in the communication and network industries, and are widely used by world-famous telecom companies as the first choice products;

Excellent quality-the US presidential plane "Air Force One" also adopted Johnson Shilin's products, which became the company's supreme honor.

Today, Qiangshilin's lightning surge protector has become the most advanced lightning protection product in the world, and Qiao Shilin has been recognized as the first brand in the lightning surge protection industry in the world.

(2) The characteristics and advantages of jocelyn arrester.

The best and most perfect surge protection system

Jocelyn lightning surge protector has novel and reliable module design, various surge suppression technologies and thermal protection technologies, adopts full-mode protection and automatic fail-safe devices, and is the only surge protector with backup protection capability. When a component fails, it does not affect the whole protection device, which is superior to the traditional design. With it, your power supply system can run more safely, effectively preventing power failure and shutdown, huge equipment damage or degradation of electronic components caused by surge.

safety performance

The unique sand filling arc extinguishing technology is adopted to ensure the minimum heating of components when lightning flows, no arc, no smoke and no explosion, especially suitable for unattended computer rooms; At present, some surge protectors on the market use vent holes to exhaust hot gas when lightning passes through, which often stays in the protected system, affecting the service life of the equipment and damaging the microelectronic devices in the equipment.

All MOVs in Jocelyn lightning surge protector have been screened and paired, and several MOVs are connected in parallel. The capacity design of the product can reach IMAX = 600 Ka, which cannot be achieved by other European products. All wires on JOSLYN products will not burn when exposed to open flames.

Sb series has a unique backup protection design with a backup protection capacity of 20kA.

Because of the randomness of lightning intensity, no one can predict whether the maximum lightning current will appear, and for some very critical systems, it is not allowed to have fault shutdown. Therefore, the surge protector with backup protection function is the best choice, which provides the most reliable protection.

Very fast response time and low residual pressure

The response time of lightning protection products in jocelyn is 1 ~ 3 ns, with residual voltage.

Suitable for installation and use in any harsh environmental conditions.

Jocelyn arrester adopts high-strength glass fiber reinforced polyester shell, which can be installed in the open air.

No need to buy spare parts, no need to backlog funds.

Due to the unique structural design, JOSLYN products are not easy to be damaged when high current passes, and can withstand 2500-30000 lightning strikes. At the same time, due to the redundant design of multiple modules, the reliability is extremely high (up to 99.99%), the service life is extremely long, and the warranty period is as long as 10 year. Long-term use does not need to replace the module, so there is no need to buy spare parts.

Similar products of other companies are seldom struck by lightning because of their different components and internal structures, so it is generally necessary to prepare spare parts to accumulate funds. For example, the transmitter room of Jiangxi Radio and Television purchased a lightning arrester of a European brand in the early stage. Because the transmitter room is usually in the wild mountainous area, the front lightning protection module is often destroyed, so it is necessary to prepare spare parts, and it takes 4000-5000 yuan to replace a lightning protection module, thus accumulating funds.

Jocelyn Power Supply has three series lightning surge protectors: SB, XN and SIT. The features and advantages of each series are as follows:

SB series has special backup protection ability, adopting box design and module combination;

Each module of SB series protector has 20kA backup protection capability. When the surge current is greater than the rated value of the nominal current capacity, the backup protection capacity will be started, making the protection more reliable.

SB series protector adopts box design, and the protective components are modular combination, which is very convenient to replace;

This series of protectors can be equipped with monitoring contacts, surge counters and audible and visual alarm to meet the needs of different customers.

XN series has special capacitance filtering function.

XN series protectors all have capacitance filtering function, which can filter out high harmonics and low transient voltage, ensure the current to be purified before reaching the high-sensitivity load, and avoid the disorder of electronic system operation and the aging of electronic components;

This series of protectors can be attached with monitoring contacts for external acousto-optic alarm.

SIT series products have a complete range and diverse functions.

SIT series protectors * * * have more than 80 models, and the maximum current capacity ranges from 40kA to 200kA. Their applications include single-phase and three-phase, AC and DC, and their protection methods include 3+ 1 and full mode. , relatively complete, suitable for different occasions. At the same time, the functions of this series of protectors can also be selected, such as additional monitoring contacts, surge counters and audible and visual alarm, which are very convenient to combine and can meet the needs of different customers.