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Views: 75 Author: Site Editor Publish Time: 2022-07-05 Origin: Site
In addition to the test of summer heat, data centers also have to withstand frequent lightning impacts. Every time at this time, network devices suffer from lightning strikes one after another, which may cause damage to individual network devices or cause the whole LAN to be down at once.
Many data center managers believe that the daily lightning voltage cannot break the equipment, but we need to know that even if the induced voltage caused by lightning is not enough to break the network equipment at one time, the over-voltage shock will cause the aging of network equipment parts after years and years, so that the service life of network equipment drops sharply, and the old equipment will be more easily damaged, which will seriously affect the performance and stability of the network. Between the results of these disasters brought to the data center, today we conduct a detailed analysis and discussion on the lightning protection technology of the data center.
Complex topography and hilly areas are prone to convective weather uplift;
Climate characteristics are humid, resulting in thunderstorms easily absorbing air and direct convective discharge;
There are more and more high-rise buildings. At the same time, there is an inextricable relationship between the increase of lightning and global warming.
Lightning intrusion into the data center way
Direct lightning is a direct lightning strike on a building, resulting in electrical, thermal and mechanical damage to the building. After the building is struck by direct lightning, the powerful lightning current along the grounding lead, the ground potential will rise instantly after entering the ground through the grounding body, generating high potential, causing ground potential backlash, damaging equipment or causing casualties.
Lightning induction is a lightning discharge, electrostatic induction and electromagnetic induction on the nearby conductors, which can make sparks between metal parts. Lightning induction can come from the ground lightning strikes, but also from the cloud discharge, which is closer to the point of lightning strikes, the resulting induction surge voltage is larger, the radius of action is also large, the general 500-meter range of electronic information equipment are the object of damage; cloud discharge induction surge voltage is smaller, but the probability of occurrence is higher.
Electrostatic induction is due to the role of thundercloud pilot, so that the nearby conductors induced with the pilot channel symbol opposite of the charge, the main thundercloud discharge, the pilot channel in the charge quickly neutralized, the induced charge on the conductor is released, such as not near the discharge into the ground will produce a very high potential. Electromagnetic induction is due to rapid changes in current in the space around it to produce a transient strong electromagnetic field, so that the nearby conductors produce a very high electric potential.
