When it comes to the use of lightning arrester, many people lack a correct understanding of some of the parameters of the lightning arrester. Coupled with the increasing frequency of thunderstorms and the widespread use of electronic products, many users have encountered many problems in choosing lightning protection products, which can lead to ineffective protection of equipment and create safety hazards. So, what should we pay attention to when choosing a lightning arrester? How should we choose?
Signal SPD lightning arrester equipment is generally divided into audio, video, network, control, and two-in-one or three-in-one categories. When choosing a lightning arrester, first of all, we must ensure that the lightning arrester can provide protection. At the same time, we should also consider the matching problem between the lightning arrester and the communication line. Therefore, when selecting a signal lightning arrester, we should mainly consider the discharge current, voltage level, rate matching, interface type, equipotential connection, and mutual interference.
In the allowed range, we should choose a lightning arrester with a larger discharge current capacity as much as possible (some signal lightning arresters have two-level protection inside and have a larger current carrying capacity, such as 5~10KA; while some signal lightning arrester only has one-level protection, and the current carrying capacity is smaller, such as only 0.5KA).
The selection of the highest working voltage of the signal lightning protection device is determined based on the working voltage of the communication line. Generally speaking, the highest working voltage of the signal lightning arrester must be greater than 1.2 times the working voltage of the communication line.
The highest transmission rate supported by the signal lightning arrester should be greater than the communication rate of the communication line. Otherwise, the communication will be interrupted or the error rate will increase, affecting the normal operation of the communication system.
The signal lightning protection device is installed in series on the communication line. In order to match the impedance and maintain the minimum contact resistance (reduce attenuation), it is necessary to choose the same type of interface as the communication device. At the same time, we should also pay attention to the pairing of line pairs, and for coaxial interfaces, we should also pay attention to male and female matching. After selecting the interface, we need to confirm that the communication pins used by the communication device match the protection pins of the lightning arrester during installation.
In order to adapt to the comprehensive lightning protection of multiple circuits, many domestic lightning protection manufacturers have developed integrated lightning arresters with multi-circuit lightning protection, such as comprehensive video lightning protection device equipment that provides lightning protection for power supply circuits, video signal circuits, and control signal circuits at the same time. This kind of lightning arrester should have an equipotential structure inside and should consider the interference of AC power supply on the video signal. 
Excellence in Quality: Product Applications of Photovoltaic DC Power Supply SPDJune 26, 2024Photovoltaic equipment is often exposed to outdoor environments over the long term, while the electronic components of inverters are highly sensitive to environmental conditions. Particularly on the D...viewBenefits of Using Lightning Protection DevicesMarch 1, 2024In today's fast-paced world, where technology reigns supreme, the importance of protecting our electronic devices from potential damage caused by lightning strikes cannot be understated. This is w...viewWhat is the Residual Voltage of the Surge Protector?March 23, 2022What is the residual voltage of the surge protector? When the SPD device is selected and adapted, its various parameters will be comprehensively considered, and a comprehensive selection will be made....viewThe IEC standards of SPDAugust 11, 2023IEC standards refer to the International Electrotechnical Commission standards, which are globally recognized and accepted guidelines for electrical and electronic devices. Spd stands for Surge Protec...viewIs Surge Backup Protector the Same As Surge Protector?March 13, 20231.The Role of Surge Backup ProtectorBefore the advent of surge backup protectors, the backup protection devices of SPD surge protectors typically used fuses or circuit breakers to separate the short-c...viewThe Position of Installing Surge ProtectorMarch 23, 20221. Where to install surge protector？The position of the surge protector: the surge protector is an important component of the lightning protection project in a building, so the location of the surge prote...view
EN
jp 
ko 
fr 
de 
es 
it 
ru 
pt 
ar 
vi 
th 
ro 
bg 
nl 
