Security monitoring how to choose the power supply lightning protection device

Power surge protectors also known as lightning arresters, surge protectors, surge protectors. The lightning protection device is the most commonly used type of lightning protection device. The difference from the network lightning protection device and the signal lightning protection device is that it mainly focuses on the surge protection of the power supply system. Power surge protectors include power lightning protection modules, power lightning protection boxes, and power lightning protection outlets. The difference between the power supply lightning protection module and the power supply lightning protection box is that the volume is different. The latter is more powerful and has a lightning counter.

The security industry receives lightning damage from lightning. Induced lightning refers to lightning in the discharge process, due to strong lightning electromagnetic pulse, through the conductive body, so that a certain range of all electronic and communications equipment has been severely damaged. This type of damage does not necessarily have a clear lightning strike, but once it occurs, it will seriously affect the normal operation or outage of electrical equipment. For example, transient overvoltages of some large-scale electrical equipment will invade indoor electrical equipment and network equipment through power line, antenna, network cable and other lines more and more frequently, causing damage to the equipment or components, temporarily causing the electronic equipment to stop, system suspension, and data transmission. Interruptions, LANs and even wide area networks are disrupted. However, the power source lightning protector is a “guardian” that prevents the electrical equipment from being struck by lightning through modern advanced lightning protection technology.

Therefore, in order to better prevent lightning accidents and ensure the safety of equipment more comprehensively, everyone chooses lightning arresters for daily equipment protection, but among them, lightning protection devices are easily damaged and have no protective effect. There are a few tips to choose from, so let's take a look at some of the tricks of choice.

First, the basic principles of power lightning protection device selection

First of all, we must ensure that the protection points for electrical equipment can be fully protected. After all, lightning is influx from around. The second is to determine the type and number of outside lines of protected points, such as power lines. Finally, the corresponding lightning protection device is selected corresponding to different types of external lines, that is, the power line should be selected to protect the lightning protection device.

Second, the correct matching power lightning protection device

1, determine the power supply mode, is the local power supply 220V or centralized power supply DC12V, AC24V.

2. Determine whether the distribution system is a TT, TN, or IT system. Only after clarifying the distribution system can you determine the single-phase, three-phase, and connection methods, and specify the location of the product to be installed in order to select the appropriate lightning protection device.

3. Determine the important parameters such as the nominal voltage, rated voltage, rated discharge current, maximum discharge current, and voltage protection level of the lightning protector.

Third, select the quality of qualified power supply lightning protection device

When selecting lightning protection products, products that have passed the detection by the lightning protection center must be selected to ensure safety performance. In the selection of manufacturers, choose as many manufacturers with years of lightning protection experience as possible to ensure the protection of lightning protection products. For example, the high lightning protection products of Australia and the United States, years of lightning protection experience, and good product quality have been widely used in fields such as broadcasting and television, security, IT, telecommunications, and electric power. In the security and lightning protection market, it is also an early industrialized production enterprise.

Summing up, it is very important to choose the lightning protection device correctly. Only by choosing the right lightning protection device, can we really protect the security monitoring equipment.