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Server room for lightning protection system example analysis, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.

It is a frequent lightning weather in summer, so the server room needs to take good lightning protection measures. The damage of lightning is mainly due to the potential difference between clouds or between clouds and the earth to a certain extent. Generally speaking, we divide a complete lightning protection system into two parts: external protection and internal protection.

The main results are as follows: (1) the external protection system is composed of lightning rod, lead wire and grounding system.

(2) the internal protection system is to prevent damage caused by the invasion of lightning and surge into the electrified equipment.

In order to realize internal lightning protection and surge protection, additional equipment and devices such as equipotential connection network, AC / DC power supply lightning arrester, signal lightning arrester and antenna feed lightning arrester need to be installed to prevent damage caused by lightning induced overvoltage and ground potential counterattack.

The protection space of the data center can be divided into three areas: LPZ0, LPZ1 and LPZ2, while LPZ0 can be divided into LPZ0A and LPZ02.

LPZ0A region: can be subjected to direct lightning strike, electromagnetic field intensity is not attenuated

LPZ0B area: will not be directly struck by lightning, but the intensity of the electromagnetic field has not been weakened.

LPZ1 area: not only will it not be struck by direct lightning, but also the electromagnetic field strength will attenuate according to the shielding measures in the area.

LPZ2 area: a follow-up protection area in LPZ1 area to further reduce the induced lightning current or electromagnetic field.

In general, data centers are located in reinforced concrete multi-storey buildings, the area will not be directly struck by lightning, power feeder and communication lines are introduced from outside, across the LPZ0B area. Therefore, the data center mainly protects against inductive lightning and lightning overvoltage transmitted into the room by power lines and communication lines. Although the probability of direct accumulation of the building where the data center is located is small, it can not be avoided. We usually use equipotential connection network to protect it.

Computers, communication equipment and control cables must install corresponding lightning arrester and equipotential connection when connecting each partition. The requirements for lightning arrester in each district are:

LPZ0B: lightning strike discharger, grade B (≤ 4KV)

LPZ1: overvoltage protector, grade requirement C (≤ 2.5KV)

LPZ2: overvoltage protector, grade requirement D (≤ 1.5KV)

Equipotential connections should be made in several lightning protection areas, and all power lines and signal lines should be connected when entering the LPZ1 area of the protected space.

Whether the lightning protection system in the computer room is built according to the requirements not only affects the normal operation of the computer room itself, but also directly related to the safety of the staff. Therefore, the quality of lightning protection system is directly related to the quality of the construction of a data center computer room.

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