Lightning is one of the natural disasters that can cause death and serious property damage. It is worth noting that not all works are protected by lightning protection systems, or that they are protected but not properly according to lightning protection system specifications. And when installing a lightning protection system, most people subjectively think that it is protected, but few people think that even a small unintentional error of the device due to long-term use will also cause great consequences if there is a lightning strike. Therefore, it is extremely important to design and periodically test a lightning protection system.
Regulations on maintenance of lightning protection systems
Maintenance and inspection of lightning protection systems should be carried out regularly, at least once a year before the thunderstorm season; it is necessary to check, repair, and replace lightning protection devices that have reduced lightning cutting capacity, measure the grounding resistance, and take remedial measures if the resistance of the grounding system is no longer satisfactory.
The basic protection principle of a lightning protection system is to prevent the energy of lightning from affecting electronic equipment. To achieve this, the lightning protection system needs to:
– Determine the lightning current and the channels (locations) through which the lightning is most likely to hit the ground (avoid the vicinity of sensitive electronic equipment)
– There is a harmonious coordination between the grounding system and the surge arrester.
– Depending on the needs of the user, there is a choice to install direct or transmitted lightning protection devices.
– Lightning rod does not rust and has high sensitivity.
– Conductor is designed to transmit lightning to the ground.
– The grounding system is guaranteed.
Regulations on the Installation of lightning protection system
a/ Earthing system (grounding system)
– Before construction and installation of lightning protection equipment (direct lightning protection and surge protection), it is necessary to consider and check the lightning protection grounding system.
b/ Construction of direct lightning protection system
– Air-termination terminals must be installed according to the installation manual..
– The lightning cable must be firmly clamped.
– The lightning protection grounding resistance of the direct lightning protection system must be less than the required value.
– Do not erect lightning rods during thunderstorms or thunder; do not work on roofs or in areas where lightning rods, support posts, or lightning cables may come into contact.
– Labeling the warning.
c/ Construction of a lightning protection system
– Before installation, check the type of lightning protection device, connection diagram, and electrical network parameters to ensure that the equipment is installed in accordance with the manufacturer's regulations.
– Lightning arresters should be installed by professional technicians.
– The grounding resistor for lightning protection equipment must ensure lightning protection standards.
– Do not bring the power supply to the arrester when there is no neutral or ground connection.
If you detect any technical errors or some parts of the system are damaged, please contact lightning protection companies for replacement, maintenance, and repair to ensure the best safety for your health. your family and the people around you.