With the increasing number of communication base station sites, the technical requirements for power supply lightning protection of communication equipment are obviously important.
The construction of communication base stations needs to consider the selection of power supply lightning protection devices, and choose which appropriate power supply lightning protection to protect communications according to different types of communication equipment.
For the normal operation of the equipment, a corresponding power lightning protection system solution is required for the operation safety of the communication power supply equipment.
Classification of lightning protection devices for power supply of communication base stations: primary power lightning protection, secondary power lightning protection and tertiary power lightning protection: the primary power lightning protection is installed At the AC input end of the base station communication equipment, it is necessary to mention that the three-level power supply lightning protection is installed in the DC end of the power conversion equipment and the communication terminal equipment.
The wire diameter requirements of the power lightning protection connecting cables of various levels in the communication base station: the power wire diameter of the first-level power lightning protection device is not less than 16mm, the grounding wire diameter is not less than 25mm, and the power wire diameter of the second power lightning protection device It is not less than 10mm, and the diameter of the grounding wire is not less than 16mm.
Finally, it is required that the diameter of the power line of the third-level power lightning protection device is not less than 6mm, and the diameter of the grounding wire is not less than 10mm.
The function and use of each power lightning protection level in the communication base station:
ØThe first-level power supply lightning protection device protection
When the communication base station itself is equipped with a lightning protection system (such as lightning rods, down-conductors, ground nets, and external shielding), according to the requirements of relevant domestic and foreign safety standards and regulations, it is necessary to have an AC 380/230V mains input terminal inside the communication base station The power supply lightning protection device is used to establish the lightning protection equipotential connection on the power line. Through this lightning protection device, the fire, explosion, and personal injury caused by lightning can be avoided.
ØSecond-level power supply lightning protection device protection
According to the requirements of relevant domestic and foreign safety standards and regulations, it is necessary to install a power lightning protection device at the AC input end of the base station communication equipment as the second-level power lightning protection, which will discharge lightning energy to protect the operation safety of communication equipment.
ØThird level power lightning protection device protection
The third power supply lightning protection device of the communication base station is installed in the DC terminal of the power conversion equipment and the communication terminal equipment, so as to ensure the safety of the terminal communication equipment.