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With the rapid development of communication technology and computer network technology, computers and networks have become more and more deeply involved in people's lives and work, and they also indicate the advent of the digital and information age. The widespread use of these microelectronic network devices makes the issue of lightning protection increasingly important.
1. What damaged my device?
Damage to equipment is often caused by lightning overvoltage. It is divided into direct lightning and induction lightning. With the popularity of lightning protection, the damage caused by direct lightning has rarely occurred. Inductive mines, which are often overlooked, often invade electronic equipment, and the annual property damage is difficult to estimate.
2. Is the lightning rod enough?
With the development of modern science and technology, electrical equipment is becoming more and more sophisticated, especially equipment exchanges, computers and other equipment, which are more vulnerable to lightning damage. Although the lightning rod can prevent direct lightning strikes on the equipment room, the protected equipment still has the possibility of being damaged by lightning caused by lightning. In order to resist the intrusion of the induced lightning, we also need to install the lightning protection device on the line.
3. What types of lightning arresters are there?
According to the working principle, the lightning arrester is divided into a voltage switch type, a voltage limit type and a combination type; according to the use, it is divided into a power supply lightning arrester and a signal lightning protection device.
4. How to choose the lightning protection model?
First of all, it is necessary to find out where the lightning protection device is used. According to the three-level lightning protection principle, the protection measures required for the power supply and equipment are divided into three levels. Install the first-stage lightning protection device in the main power distribution cabinet, select the power supply lightning protection device with a large flow capacity (the maximum discharge current is 80KA~160KA as the case may be), and then install the second level in the subordinate regional distribution box. Power surge protector (about 40KA), and finally install a third-level power surge protector (10KA-40KA) at the front of the device. In addition, the signal lightning protection device should be selected according to the object that it protects, and the general equipment room selects the network signal lightning protection device.
5. How to install the lightning arrester?
First, the lightning protection device needs to bleed the current and must be grounded. Secondly, the lightning protection device needs to be connected in parallel or in series between the protection device and the signal channel; in addition, the input terminal (IN) of the signal lightning protection device is connected to the signal channel, and the output terminal (OUT) is connected to the protected device and installed close to the protected device, and cannot be reversed. Then, connect the grounding wire of the lightning arrester to the grounding bar of the lightning protection system. The shorter the wiring, the better, not more than 1m.
6. Shielding measures should be done well
This may be a point that is often overlooked. The LAN and telephone lines in the equipment room are not shielded (ie, there is no metal trunking), and there are certain deficiencies. Therefore, the metal line slot is added to each line of the equipment room to shield the telephone and the network line, and the equipotential grounding at both ends of the metal line slot can effectively prevent the lightning surge.
7. Precautions for lightning protection
The quality of lightning protection devices on the market is uneven now. The performance of some imported brands' lightning arresters is really good, but the price is too high, and many of them are OEM in China. In addition, some lightning protection companies, small workshops, products have not been certified and filed by the lightning protection center, the quality is difficult to guarantee. Like the electric, the green bamboo West No. 1 lightning protection device is strictly produced and tested, and has 3C certification and lightning protection filing, these are all things that must be paid attention to when purchasing the lightning protection device.