With the current application of security facilities in various types of buildings, it will be more convenient for everyone to get more safety. When the new type of fingerprint attendance machine replaces the traditional mode of attendance, when modern building intercoms help people better understand the dynamics outside the building, people have increasingly relied on the convenience brought by technology. But have we ever wondered if high technology has given us convenience, is it possible that there are hidden dangers for us?
In the past two years, extreme weather has repeatedly invaded our lives. Especially in the hot summer months, it seems that every storm after lightning will bring more news to our newspaper. So, as the high-tech is applied more and more widely around us, our lives are quietly added with many risks. Therefore, as an important one of our security equipment - building intercom, it is also deeply involved in this dangerous conflict. As it is outdoors and the high-rise building itself is also a conductor that can easily lead lightning, building intercom is more vulnerable to lightning than other devices.
Lightning Strokes
Under normal circumstances, lightning damage to objects is mainly in two forms - direct lightning and induced lightning. When the lightning reaches a certain number of charges in the cloud and the electric field between the object and the ground reaches a breakdown intensity, breakdown occurs and the front or side of the high-rise building is struck by lightning. Another kind of mine is an inductive mine. It forms a magnetic field in the form of lightning waves. High voltages are instantaneously formed on nearby conductors, causing damage to electrical equipment. In general, the frequency of the induced lightning is much higher than that of the direct lightning. Since the conductor can be used for conducting farther distances, the destruction surface is also much larger. Therefore, if a building
Intercom System is attacked by such a thunder, it often results in damage to key components such as power boxes, circuit boards, and talkers, causing great losses.
Precautions
Faced with the above security threats, we need to make more detailed preventive measures on the relevant systems -
Take reasonable wiring. In the wiring process, try to arrange the line in the indoor environment, so as to avoid lightning harassment, but also to make the line suffer less wind erosion or damage by unscrupulous personnel. In addition, during the wiring process, try to keep away from metal conductors and avoid damaging the system equipment due to its electrical conductivity. Even if it cannot be completely separated due to environmental restrictions, try to ensure a separation distance of five meters or more.
The power box is properly installed. When installing the power box, be sure to avoid mounting on the surrounding side walls (especially for high-rise buildings) so as to avoid the impact of direct lightning strikes. In addition, around the installation of the power box, as far as possible away from the water pipes, heating pipes and other conductive facilities, to avoid causing lightning attacks. At the same time, when installing the power box and the circuit board, it is also necessary to pay attention to the access of the ground wire to ensure that it can have a release channel when subjected to high voltage, so as not to directly impact the equipment.
In the access of the power supply, it is also necessary to take the convenience of control of power access as much as possible so that in the event of a safety hazard, the power supply can be protected in time. In addition to the above-mentioned aspects, the entire building's own lightning protection system is also very important. Only by perfecting various protective measures can we have more safety in our lives.
October 20, 2022
