Lightning protection


Lightning is a series of technical solutions designed to ensure that all systems and components of construction projects and safety of people staying in them during the live lightning.
Owners of their own homes today, individually, may acquire Lightning system or predict its installation at the design stage house. Moreover, the government has revised a number of requirements that apply to private property. Among the revised requirements included provisions elektrozahystu individual residential buildings.
How much more important time to get a Lightning? Today, many remember any incidents that occurred with someone related to hit lightning in residential buildings. The consequences resulting from such accidents are deplorable. On average, compared with the losses inflicted effects of lightning hitting a house, installation of lightning protection system does not seem so expensive.
Lightning is internal and external.
Internal lightning protection, a number of measures aimed at ensuring the preservation of buildings in the event of interference and dangerous voltages in the electrical as well as in the pipeline, when a lightning strike. This system includes PZIP - device protection against surge, combined with an effective grounding system. The components in the internal lightning protection must be designed and installed in accordance with such standards as 34.21.122-87 RD and CO 153-34.21.122-2003.
Of the external lightning is lightning that ensures interception of lightning, followed by withdrawal of discharge into the ground, protecting thus building from fire damage.
External lightning protection system consists of three devices:
Lightning - Lightning captures lightning. The device can not discharge because of physical principles fall into other, more significant elements of the building.
Tokovidvid (descent) diverts current from the lightning rod in the direction of grounding, which is a metallic conductor embedded in the ground. The use of this device, the current is dissipated in the ground.
Modern lightning protection system can be passive or active.
Passive Lightning
It is, in fact, a classic way diversion lightning discharge involves the use of metallic lightning, mounted on the roof.
Passive systems Lightning divided into the following types:
1) pin system. Lightning mounted on metal roofing and raising grounded. On it have thunderbolt. From the lightning in the direction of the earth, leaving strumovidvid, which is a wire with a diameter of intersection of at least 6 mm. Strumovidvid attached to the grounding planted in the ground. This system is inexpensive, but at the same time covering the small sector is usually a protection current in small buildings.
2) cable system. In this case, a metal wire extending along the roof ridge, situated on two wooden props throughout. This rope is welded strumovidvid that along the roof down towards the ground and attached to the grounding. This system effectively protects the building from a large area of ​​the roof structure. Often, the system used for lightning protection of commercial pavilions, temporary buildings, etc. But keep in mind that the use of such a system is difficult for objects with complex and high roof, not only technically, but also from an aesthetic point of view.
3) Grid system. This system is a combination of metal wires and metal shunts that are grounded separately.
This is the most effective system of passive lightning because it is able to protect against direct lightning hit, almost all structural elements of the building. Moreover, this system is highly reliable, but difficult to install and visible when we look at the building. A well designed system is a combination of mesh and the lightning rod. For greater efficiency, optional multiple pins on one roof. This system is proven and very reliable, despite some violations of the exterior of the building.
Active Lightning
This is the result of modern developments. Underlying Active lighting is the use of air ionization around the bar. The result of such an event, there is a significant increase in protected areas. The device requires network feeding and safe for the environment and humans. Ionizers create a periodic series of electrical impulses between the device and thunderclouds through use as feed, electromagnetic field. Ionizer in this case, anyway, provokes hit lightning in Lightning. This system requires periodic maintenance, operating autonomously. Installation of lightning is active at 1 meter from the highest point of the house. Pleas discharge by two descents. Active lighting system is compact, not seen, has a large protection zone (not less than 80 meters).