What are the characteristics of lightning protection engineering?

As a systematic project, lightning protection works mainly include the prevention of direct lightning strikes and the suppression of lightning and electromagnetic pulse interference and other forms of transmission. The lightning protection project with guaranteed quality uses comprehensive lightning protection measures such as interception, shielding, photoelectric isolation, voltage equalization and equipotential bonding. By this method, an equipotential natural lightning protection network framework with extremely small resistance, minimal down-conductor impedance and plane is formed. What are the characteristics of trusted lightning protection projects below?

1, light into the copper back safe and stable

For the design of the interception, the design and installation of lightning protection devices are specifically carried out in accordance with the requirements of the "Lightning Protection Design Code for Buildings". This irreplaceable lightning protection project shields the signal transmission line, the outdoor cable for long-distance transmission, and the outer layer. The armored protective cover should be reliably grounded at the same time; for the outdoor optical cable of long-distance communication, the reinforcing ribs should be reliably grounded at the central machine room and the access end. The light enters the copper retreat. When conditions permit, the signal transmission (video signal, control signal, etc.) should be replaced by the optical cable transmission instead of the traditional cable transmission, and the blocking induction improves the safety and stability of the system.

2, pressure equalization, diversion

The voltage-shaping feature of lightning protection engineering is to make good conductive connection of the conductors, so that they can reach the conditions of equal potential, and provide a low-impedance continuous channel to the lightning current, so that it can be quickly introduced into the earth. In order to effectively prevent the intrusion of overvoltage waves caused by lightning, the electromechanical system must also install the arrester at the connection of the input end of the cable and the terminal equipment.

3, equipotential bonding

Where conditions permit, lightning protection works between buildings and different subsystems of electromechanical or electromechanical systems. It is recommended that joint grounding be used for connection. And when the joint grounding between the building and the electromechanical system is adopted, the natural grounding body should be mainly used, supplemented by other grounding methods.

Of course, for a natural grounding body, the lightning protection project must meet three conditions at the same time, that is, the grounding resistance meets the requirements of the specified value. The outer surface of the foundation should have no insulating waterproof layer, and the reinforcing bars in the foundation should be connected to each other to form an electrical path. And the formation of a closed loop can ensure that this lightning protection project is smoother and more reliable.

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